Checklist of the vascular plants of OREGON (excluding grasses and their allies) ACERACEAE Acer circinatum Pursh vine maple Acer glabrum Torr. Rocky Mountain maple Acer glabrum var. douglasii (Hook.) Dippel Douglas maple Acer macrophyllum Pursh bigleaf maple Acer negundo L. boxelder Acer negundo var. negundo L. boxelder ACORACEAE Acorus americanus (Raf.) Raf. sweetflag Acorus calamus auct. non L. = Acorus americanus Acorus calamus var. americanus (Raf.) H.D. Wulff. = Acorus americanus AIZOACEAE Aptenia cordifolia (L. f.) Schwant. heartleaf iceplant Carpobrotus aequilateralus (Haw.) N.E. Br. baby sunrose Mesembryanthemum cordifolium L. f. = Aptenia cordifolia Sesuvium verrucosum Raf. verrucose seapurslane ALISMATACEAE Alisma geyeri Torr. = Alisma gramineum Alisma gramineum Lej. narrowleaf water plantain Alisma lanceolatum Withering lanceleaf water plantain Alisma plantago-aquatica = Alisma triviale Alisma triviale Pursh northern water plantain Machaerocarpus californicus (Torr. ex Benth.) Small California damsonium Sagittaria calycina Engelm. hooded arrowhead Sagittaria calycina var. calycina Engelm. hooded arrowhead Sagittaria cuneata Sheldon arumleaf arrowhead Sagittaria latifolia Willd. broadleaf arrowhead Sagittaria latifolia var. latifolia Willd. broadleaf arrowhead AMARANTHACEAE Amaranthus albus L. prostrate pigweed Amaranthus blitoides S. Wats. mat amaranth Amaranthus californicus (Moq.) S. Wats. California amaranth Amaranthus cruentus L. red amaranth Amaranthus deflexus L. largefruit amaranth Amaranthus retroflexus L. redroot amaranth ANACARDIACEAE Rhus diversiloba Torr. & Gray = Toxicodendron diversilobum Rhus glabra L. smooth sumac Rhus trilobata Nutt. skunkbush sumac Rhus trilobata var. simplicifolia (Greene) Barkl. skunkbush sumac Rhus trilobata var. trilobata Nutt. skunkbush sumac Toxicodendron diversilobum (Torr. & Gray) Greene Pacific poison oak Toxicodendron radicans ssp. diversilobum (Torr. & Gray) Thorne = Toxicodendron diversilobum APOCYNACEAE Apocynum X floribundum Greene (pro sp.) intermediate dogbane Apocynum androsaemifolium L. spreading dogbane Apocynum androsaemifolium ssp. androsaemifolium L. spreading dogbane Apocynum androsaemifolium ssp. androsaemifolium var. androsaemifolium L. spreading dogbane Apocynum androsaemifolium ssp. androsaemifolium var. incanum A. DC. spreading dogbane Apocynum cannabinum L. Indianhemp Apocynum medium Greene = Apocynum X floribundum Apocynum sibiricum Jacq. = Apocynum cannabinum Apocynum suksdorfii Greene = Apocynum cannabinum Vinca major L. bigleaf periwinkle ARACEAE Lysichiton americanus Hulten & St. John American skunkcabbage Lysichiton camtschatcensis auct. non (L.) Schott = Lysichiton americanus ARALIACEAE Aralia californica S. Wats. California spikenard Echinopanax horridus (Sm.) Dcne. & Planch. ex H.A.T. Harms = Oplopanax horridus Hedera helix L. English ivy Oplopanax horridus Miq. devilsclub ARISTOLOCHIACEAE Asarum caudatum Lindl. British Columbia wildginger Asarum caudatum var. caudatum Lindl. British Columbia wildginger Asarum caudatum var. viridiflorum M.E. Peck longtail wildginger Asarum hartwegii S. Wats. Hartweg's wildginger ASCLEPIADACEAE Asclepias cordifolia (Benth.) Jepson heartleaf milkweed Asclepias cryptoceras S. Wats. pallid milkweed Asclepias cryptoceras ssp. davisii (Woods.) Woods. Davis' milkweed Asclepias fascicularis Dcne. Mexican whorled milkweed Asclepias speciosa Torr. showy milkweed Asclepias syriaca L. common milkweed ASPLENIACEAE Asplenium septentrionale (L.) Hoffmann forked spleenwort Asplenium trichomanes L. maidenhair spleenwort Asplenium trichomanes-ramosum L. brightgreen spleenwort AZOLLACEAE Azolla filiculoides Lam. Pacific azolla BALSAMINACEAE Impatiens aurella Rydb. paleyellow touchmenot Impatiens capensis Meerb. jewelweed Impatiens ecalcarata Blank. spurless touchmenot Impatiens glandulifera Royle ornamental jewelweed Impatiens noli-tangere L. western touchmenot BERBERIDACEAE Achlys triphylla (Sm.) DC. sweet after death Berberis aquifolium Pursh = Mahonia aquifolium Berberis nervosa Pursh = Mahonia nervosa var. nervosa Berberis pinnata Lag. = Mahonia pinnata ssp. pinnata Berberis repens Lindl. = Mahonia repens Mahonia aquifolium (Pursh) Nutt. hollyleaved barberry Mahonia nervosa (Pursh) Nutt. Cascade Oregongrape Mahonia nervosa var. nervosa (Pursh) Nutt. cascade Oregongrape Mahonia pinnata (Lag.) Fedde wavyleaf Oregongrape Mahonia pinnata ssp. pinnata (Lag.) Fedde California barberry Mahonia repens (Lindl.) G. Don Oregongrape Vancouveria Morr. & Dcne. vancouveria Vancouveria chrysantha Greene golden insideout flower Vancouveria hexandra (Hook.) Morr. & Dcne. white insideout flower Vancouveria planipetala Calloni redwood insideout flower BETULACEAE Alnus incana (L.) Moench mountain alder Alnus incana ssp. tenuifolia (Nutt.) Breitung thinleaf alder Alnus rhombifolia Nutt. white alder Alnus rubra Bong. red alder Alnus viridis (Vill.) Lam. & DC. sitka alder Alnus viridis ssp. sinuata (Regel) A.& D. Love Sitka alder Betula X utahensis Britt. (pro sp.) northwestern paper birch Betula nana L. bog birch Betula occidentalis Hook. water birch Betula papyrifera Marsh. paper birch Betula papyrifera var. commutata (Regel) Fern. western paper birch Betula pumila L. swamp birch Betula pumila var. glandulifera Regel glandulose birch Corylus cornuta Marsh. beaked hazelnut Corylus cornuta var. californica (A. DC.) Sharp California hazelnut BLECHNACEAE Blechnum spicant (L.) Roth deer fern Woodwardia fimbriata Sm. giant chainfern BORAGINACEAE Amsinckia carinata A. Nels. & J.F. Macbr. Malheur Valley fiddleneck Amsinckia intermedia Fisch. & C.A. Mey. = Amsinckia menziesii var. intermedia Amsinckia lycopsoides Lehm. tarweed fiddleneck Amsinckia menziesii (Lehm.) A. Nels. & J.F. Macbr. Menzies' fiddleneck Amsinckia menziesii var. intermedia (Fisch & C.A. Mey.) Ganders Amsinckia menziesii var. menziesii (Lehm.) A. Nels. & J.F. Macbr. Amsinckia spectabilis Fisch. & C.A. Mey. woolly breeches Amsinckia tessellata Gray bristly fiddleneck Anchusa arvensis (L.) Bieb. small bugloss Anchusa azurea P. Mill. Italian bugloss Anchusa officinalis L. common bugloss Argusia Boehmer sea rosemary Argusia sibirica (L.) Dandy Siberian sea rosemary Asperugo procumbens L. madwort Borago officinalis L. common borage Buglossoides arvensis (L.) I.M. Johnston corn gromwell Cryptantha Lehm. ex G. Don cryptantha Cryptantha affinis (Gray) Greene quill catseye Cryptantha ambigua (Gray) Greene basin catseye Cryptantha celosioides (Eastw.) Payson buttecandle Cryptantha circumscissa (Hook. & Arn.) I.M. Johnston cushion catseye Cryptantha circumscissa var. circumscissa (Hook. & Arn.) I.M. Johnston cushion catseye Cryptantha echinella Greene prickly catseye Cryptantha fendleri (Gray) Greene sanddune catseye Cryptantha flaccida (Dougl. ex Lehm.) Greene weakstem catseye Cryptantha gracilis Osterhout narrowstem catseye Cryptantha intermedia (Gray) Greene Clearwater catseye Cryptantha leiocarpa (Fisch. & C.A. Mey.) Greene coastal catseye Cryptantha micrantha (Torr.) I.M. Johnston redroot catseye Cryptantha micrantha var. micrantha (Torr.) I.M. Johnston redroot catseye Cryptantha milo-bakeri I.M. Johnston Milo Baker's catseye Cryptantha propria (A. Nels. & J.F. Macbr.) Payson Malheur catseye Cryptantha pterocarya (Torr.) Greene wingnut catseye Cryptantha pterocarya var. pterocarya (Torr.) Greene wingnut catseye Cryptantha recurvata Coville curvenut catseye Cryptantha rostellata var. rostellata (Greene) Greene beaked catseye Cryptantha scoparia A. Nels. Pinyon Desert catseye Cryptantha simulans Greene pinewoods catseye Cryptantha sobolifera Payson Waterton Lakes catseye Cryptantha spiculifera (Piper) Payson Snake River catseye Cryptantha thompsonii I.M. Johnston Thompson's catseye Cryptantha torreyana (Gray) Greene Torrey's catseye Cryptantha torreyana var. torreyana (Gray) Greene Torrey's catseye Cryptantha watsonii (Gray) Greene Watson's catseye Cynoglossum grande Dougl. ex Lehm. Pacific hound's tongue Cynoglossum occidentale Gray western hound's tongue Cynoglossum officinale L. gypsyflower Eritrichium nanum (Vill.) Schrad. ex Gaudin arctic alpine forget me not Eritrichium nanum var. aretioides (Cham.) Herder alpine forget me not Eritrichium nanum var. elongatum (Rydb.) Cronq. arctic alpine forget me not Hackelia californica (Gray) I.M. Johnston California stickseed Hackelia cronquistii J.L. Gentry Cronquist's stickseed Hackelia cusickii (Piper) Brand Cusick's stickseed Hackelia diffusa (Lehm.) I.M. Johnston spreading stickseed Hackelia diffusa var. cottonii (Piper) R.L. Carr Cotton's stickseed Hackelia diffusa var. diffusa (Lehm.) I.M. Johnston spreading stickseed Hackelia floribunda (Lehm.) I.M. Johnston manyflower stickseed Hackelia hispida (Gray) I.M. Johnston showy stickseed Hackelia hispida var. hispida (Gray) I.M. Johnston showy stickseed Hackelia micrantha (Eastw.) J.L. Gentry Jessica sticktight Hackelia ophiobia R.L. Carr Owyhee River stickseed Hackelia patens (Nutt.) I.M. Johnston common stickseed Hackelia patens var. patens (Nutt.) I.M. Johnston spotted stickseed Hackelia setosa (Piper) I.M. Johnston bristly stickseed Heliotropium curassavicum L. salt heliotrope Heliotropium curassavicum var. obovatum DC. seaside heliotrope Lappula occidentalis (S. Wats.) Greene flatspine stickseed Lappula occidentalis var. occidentalis (S. Wats.) Greene desert stickseed Lappula squarrosa (Retz.) Dumort. European stickseed Lithospermum californicum Gray California gromwell Lithospermum ruderale Dougl. ex Lehm. western gromwell Mertensia bella Piper beautiful bluebells Mertensia ciliata (James ex Torr.) G. Don mountain bluebells Mertensia ciliata var. ciliata (James ex Torr.) G. Don tall fringe bluebells Mertensia ciliata var. stomatechoides (Kellogg) Jepson tall fringe bluebells Mertensia cusickii Piper Toiyabe bluebells Mertensia longiflora Greene small bluebells Mertensia oblongifolia (Nutt.) G. Don oblongleaf bluebells Mertensia paniculata (Ait.) G. Don tall bluebells Mertensia paniculata var. borealis (J.F. Macbr.) L.O. Williams northern bluebells Mertensia paniculata var. paniculata (Ait.) G. Don tall bluebells Mertensia platyphylla Heller broadleaf bluebells Mertensia platyphylla var. subcordata (Greene) L.O. Williams broadleaf bluebells Mertensia umbratilis Greenm. shade bluebells Myosotis arvensis (L.) Hill field forget me not Myosotis discolor Pers. changing forget me not Myosotis laxa Lehm. bay forget me not Myosotis macrosperma Engelm. largeseed forget me not Myosotis scorpioides L. true forget me not Myosotis stricta Link ex Roemer & J.A. Schultes strict forget me not Myosotis verna Nutt. spring forget me not Omphalodes linifolia (L.) Moench whiteflower navelwort Pectocarya penicillata (Hook. & Arn.) A. DC. sleeping combseed Pectocarya pusilla (A. DC.) Gray little combseed Pectocarya setosa Gray moth combseed Plagiobothrys austiniae (Greene) I.M. Johnston Austin's popcornflower Plagiobothrys bracteatus (T.J. Howell) I.M. Johnston bracted popcornflower Plagiobothrys figuratus (Piper) I.M. Johnston ex M.E. Peck fragrant popcornflower Plagiobothrys figuratus ssp. figuratus (Piper) I.M. Johnston ex M.E. Peck fragrant popcornflower Plagiobothrys fulvus (Hook. & Arn.) I.M. Johnston fulvous popcornflower Plagiobothrys fulvus var. campestris (Greene) I.M. Johnston fulvous popcornflower Plagiobothrys glyptocarpus (Piper) I.M. Johnston sculptured popcornflower Plagiobothrys glyptocarpus var. glyptocarpus (Piper) I.M. Johnston sculptured popcornflower Plagiobothrys greenei (Gray) I.M. Johnston Greene's popcornflower Plagiobothrys hirtus (Greene) I.M. Johnston rough popcornflower Plagiobothrys hispidus Gray Cascade popcornflower Plagiobothrys kingii (S. Wats.) Gray Great Basin popcornflower Plagiobothrys kingii var. harknessii (Greene) Jepson Harness' popcornflower Plagiobothrys leptocladus (Greene) I.M. Johnston finebranched popcornflower Plagiobothrys mollis (Gray) I.M. Johnston soft popcornflower Plagiobothrys mollis var. mollis (Gray) I.M. Johnston soft popcornflower Plagiobothrys nothofulvus (Gray) Gray rusty popcornflower Plagiobothrys reticulatus (Piper) I.M. Johnston netted popcornflower Plagiobothrys salsus (Brandeg.) I.M. Johnston salty popcornflower Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnston Scouler's popcornflower Plagiobothrys scouleri var. cusickii (Greene) Higgins Cusick's popcornflower Plagiobothrys scouleri var. hispidulus (Greene) Dorn sleeping popcornflower Plagiobothrys scouleri var. scouleri (Hook. & Arn.) I.M. Johnston Scouler's popcornflower Plagiobothrys shastensis Greene ex Gray Shasta popcornflower Plagiobothrys stipitatus (Greene) I.M. Johnston slender popcornflower Plagiobothrys stipitatus var. micranthus (Piper) I.M. Johnston stalked popcornflower Plagiobothrys stipitatus var. stipitatus (Greene) I.M. Johnston slender popcornflower Plagiobothrys tenellus (Nutt. ex Hook.) Gray Pacific popcornflower Pulmonaria ciliata James ex Torr. = Mertensia ciliata var. ciliata Symphytum asperum Lepechin prickly comfrey Symphytum officinale L. common comfrey Tiquilia nuttallii (Hook.) A. Richards. Nuttall's coldenia CABOMBACEAE Brasenia schreberi J.F. Gmel. watershield CACTACEAE Echinocactus simpsonii Engelm. = Pediocactus simpsonii var. simpsonii Escobaria vivipara (Nutt.) Buxbaum spinystar Escobaria vivipara var. vivipara (Nutt.) Buxbaum spinystar Mammillaria vivipara (Nutt.) Haw. = Escobaria vivipara var. vivipara Opuntia erinacea Engelm. & Bigelow ex Engelm. grizzlybear pricklypear Opuntia erinacea var. columbiana (Griffiths) L. Benson grizzleybear pricklypear Opuntia fragilis (Nutt.) Haw. brittle pricklypear Opuntia fragilis var. fragilis (Nutt.) Haw. pygmy pricklypear Opuntia polyacantha Haw. plains pricklypear Pediocactus Britt. & Rose hedgehog cactus Pediocactus simpsonii (Engelm.) Britt. & Rose Simpson hedgehog cactus Pediocactus simpsonii var. robustior (Coult.) L. Benson snowball cactus Pediocactus simpsonii var. simpsonii (Engelm.) Britt. & Rose Simpson hedgehog cactus CALLITRICHACEAE Callitriche fassettii Schotsman Fassett's waterstarwort Callitriche hermaphroditica L. northern waterstarwort Callitriche heterophylla Pursh larger waterstarwort Callitriche heterophylla ssp. bolanderi (Hegelm.) Calder & Taylor Bolander's waterstarwort Callitriche heterophylla ssp. heterophylla Pursh twoheaded waterstarwort Callitriche marginata Torr. winged waterstarwort Callitriche palustris L. vernal waterstarwort Callitriche stagnalis Scop. pond waterstarwort Callitriche trochlearis Fassett effluent waterstarwort CAMPANULACEAE Asyneuma prenanthoides (Dur.) McVaugh California harebell Campanula medium L. Canterbury bells Campanula rapunculoides L. rampion bellflower Campanula rotundifolia L. bluebell bellflower Campanula scabrella Engelm. rough bellflower Campanula scouleri Hook. ex A. DC. pale bellflower Downingia bacigalupii Weiler Bach's calicoflower Downingia bicornuta Gray doublehorn calicoflower Downingia bicornuta var. bicornuta Gray doublehorn calicoflower Downingia elegans (Dougl. ex Lindl.) Torr. elegant calicoflower Downingia elegans var. brachypetala (Gandog.) McVaugh elegant calicoflower Downingia elegans var. elegans (Dougl. ex Lindl.) Torr. elegant calicoflower Downingia insignis Greene harlequin calicoflower Downingia laeta (Greene) Greene Great Basin calicoflower Downingia montana Greene Sierran calicoflower Downingia pulchella (Lindl.) Torr. flatface calicoflower Downingia yina Applegate cascade calicoflower Githopsis specularioides Nutt. common bluecup Heterocodon rariflorum Nutt. rareflower heterocodon Howellia aquatilis Gray water howellia Lobelia erinus L. edging lobelia Nemacladus rigidus Curran stoutstem threadplant Porterella carnosula (Hook. & Arn.) Torr. fleshy porterella Triodanis perfoliata (L.) Nieuwl. clasping Venus' lookingglass Triodanis perfoliata var. biflora (Ruiz & Pavon) Bradley clasping Venus' lookingglass Triodanis perfoliata var. perfoliata (L.) Nieuwl. clasping Venus' lookingglass CAPPARACEAE Cleome lutea Hook. yellow spiderflower Cleome lutea var. lutea Hook. yellow spiderflower Cleome platycarpa Torr. golden spiderflower Cleome serrulata Pursh Rocky Mountain beeplant Cleomella hillmanii A. Nels. Hillman's stinkweed Cleomella plocasperma S. Wats. twisted cleomella Polanisia dodecandra (L.) DC. roughseed clammyweed Polanisia dodecandra ssp. trachysperma (Torr. & Gray) Iltis sandyseed clammyweed CAPRIFOLIACEAE Linnaea borealis L. twinflower Linnaea borealis ssp. longiflora (Torr.) Hulten longtube twinflower Lonicera caerulea L. sweetberry honeysuckle Lonicera caerulea var. cauriana (Fern.) Boivin bluefly honeysuckle Lonicera ciliosa (Pursh) Poir. ex DC. orange honeysuckle Lonicera conjugialis Kellogg purpleflower honeysuckle Lonicera etrusca Santi Etruscan honeysuckle Lonicera hispidula (Lindl.) Dougl. ex Torr. & Gray California honeysuckle Lonicera hispidula var. hispidula (Lindl.) Dougl. ex Torr. & Gray pink honeysuckle Lonicera hispidula var. vacillans (Benth.) Gray pink honeysuckle Lonicera interrupta Benth. chaparral honeysuckle Lonicera involucrata Banks ex Spreng. twinberry honeysuckle Lonicera involucrata var. ledebourii (Eschsch.) Zabel Lonicera utahensis S. Wats. Utah honeysuckle Lonicera xylosteum L. dwarf honeysuckle Sambucus cerulea var. cerulea Raf. blue elderberry Sambucus mexicana ssp. cerulea (Raf.) E. Murr. = Sambucus nigra ssp. cerulea Sambucus nigra L. European black elder Sambucus nigra ssp. cerulea (Raf.) R. Bolli Sambucus racemosa L. scarlet elderberry Sambucus racemosa ssp. pubens var. arborescens (Torr. & Gray) Gray Pacific red elder Sambucus racemosa ssp. pubens var. melanocarpa (Gray) McMinn black elderberry Sambucus racemosa var. racemosa L. Symphoricarpos acutus (Gray) Dieck sharpleaf snowberry Symphoricarpos albus (L.) Blake common snowberry Symphoricarpos albus var. albus (L.) Blake common snowberry Symphoricarpos albus var. laevigatus (Fern.) Blake common snowberry Symphoricarpos hesperius G.N. Jones trailing snowberry Symphoricarpos longiflorus Gray desert snowberry Symphoricarpos occidentalis Hook. western snowberry Symphoricarpos oreophilus Gray whortleleaf snowberry Symphoricarpos oreophilus var. utahensis (Rydb.) A. Nels. Utah snowberry Symphoricarpos rotundifolius Gray roundleaf snowberry Viburnum edule (Michx.) Raf. mooseberry viburnum Viburnum ellipticum Hook. common viburnum CARYOPHYLLACEAE Agrostemma githago L. common corncockle Arenaria aculeata S. Wats. prickly sandwort Arenaria capillaris Poir. mountain sandwort Arenaria capillaris ssp. americana Maguire fescue sandwort Arenaria congesta Nutt. ballhead sandwort Arenaria congesta var. cephaloidea (Rydb.) Maguire sharptip sandwort Arenaria congesta var. congesta Nutt. ballhead sandwort Arenaria congesta var. crassula Maguire ballhead sandwort Arenaria congesta var. prolifera Maguire ballhead sandwort Arenaria congesta var. subcongesta (S. Wats.) S. Wats. subcongesta sandwort Arenaria congesta var. suffrutescens (Gray) B.L. Robins. suffrutescent sandwort Arenaria franklinii Dougl. ex Hook. Franklin's sandwort Arenaria franklinii var. franklinii Dougl. ex Hook. Franklin's sandwort Arenaria kingii (S. Wats.) M.E. Jones King's sandwort Arenaria kingii ssp. uintahensis (A. Nels.) Maguire Uinta sandwort Arenaria lateriflora L. = Moehringia lateriflora Arenaria paludicola B.L. Robins. marsh sandwort Arenaria pumicola Coville & Leib. Crater Lake sandwort Arenaria pumicola var. pumicola Coville & Leib. Crater Lake sandwort Arenaria serpyllifolia L. thymeleaf sandwort Cardionema ramosissimum (Weinm.) A. Nels. & J.F. Macbr. sandcarpet Cerastium arvense L. field chickweed Cerastium arvense ssp. maximum (Hollick & Britt.) Ugborogho field chickweed Cerastium brachypodum (Engelm. ex Gray) B.L. Robins. shortstalk chickweed Cerastium fontanum Baumg. common chickweed Cerastium fontanum ssp. vulgare (Hartman) Greuter & Burdet big chickweed Cerastium glomeratum Thuill. sticky chickweed Cerastium nutans Raf. nodding chickweed Cerastium semidecandrum L. fivestamen chickweed Cerastium siculum Guss. dry chickweed Corrigiola litoralis L. strapwort Dianthus armeria L. Deptford pink Dianthus barbatus L. sweetwilliam Gypsophila paniculata L. babysbreath gypsophila Holosteum umbellatum L. jagged chickweed Honckenya peploides (L.) Ehrh. seaside sandplant Honckenya peploides ssp. major (Hook.) Hulten seaside sandplant Loeflingia squarrosa Nutt. spreading pygmyleaf Loeflingia squarrosa ssp. artemisiarum Barneby & Twisselmann spreading pygmyleaf Lychnis coronaria (L.) Desr. rose campion Minuartia austromontana S.J. Wolf & Packer Columbian stitchwort Minuartia californica (Gray) Mattf. California sandwort Minuartia douglasii (Fenzl ex Torr. & Gray) Mattf. Douglas' stitchwort Minuartia howellii (S. Wats.) Mattf. Howell's stitchwort Minuartia michauxii (Fenzl) Farw. Michaux's stitchwort Minuartia michauxii var. michauxii (Fenzl) Farw. Michaux's stitchwort Minuartia nuttallii (Pax) Briq. Nuttall's sandwort Minuartia nuttallii ssp. fragilis (Maguire & A. Holmgren) McNeill brittle sandwort Minuartia nuttallii ssp. gracilis (B.L. Robins.) McNeill brittle sandwort Minuartia nuttallii ssp. gregaria (Heller) McNeill brittle sandwort Minuartia nuttallii ssp. nuttallii (Pax) Briq. Nuttall's sandwort Minuartia obtusiloba (Rydb.) House twinflower sandwort Minuartia pusilla (S. Wats.) Mattf. annual sandwort Minuartia pusilla var. pusilla (S. Wats.) Mattf. annual sandwort Minuartia rossii (R. Br. ex Richards.) Graebn. Ross' sandwort Minuartia rubella (Wahlenb.) Hiern beautiful sandwort Minuartia tenella (Nutt.) Mattf. slender stitchwort Moehringia lateriflora (L.) Fenzl bluntleaf sandwort Moehringia macrophylla (Hook.) Fenzl largeleaf sandwort Moenchia erecta (L.) P.G. Gaertn., B. Mey. & Scherb. upright chickweed Pseudostellaria jamesiana (Torr.) W.A. Weber & R.L. Hartman tuber starwort Sagina apetala Ard. annual pearlwort Sagina decumbens (Ell.) Torr. & Gray beach pearlwort Sagina decumbens ssp. occidentalis (S. Wats.) Crow western pearlwort Sagina japonica (Sw.) Ohwi Japanese pearlwort Sagina maxima Gray stickystem pearlwort Sagina maxima ssp. crassicaulis (S. Wats.) Crow stickystem pearlwort Sagina procumbens L. birdeye pearlwort Sagina saginoides (L.) Karst. arctic pearlwort Sagina subulata (Sw.) K. Presl awlleaf pearlwort Saponaria officinalis L. bouncingbet Scleranthus annuus L. German knotgrass Silene acaulis (L.) Jacq. moss campion Silene acaulis var. exscapa (All.) DC. moss campion Silene antirrhina L. sleepy silene Silene bernardina S. Wats. Palmer's catchfly Silene bernardina ssp. maguirei Bocquet Maguire's catchfly Silene bernardina ssp. maguirei var. rigidula (B.L. Robins.) Tiehm mountain silene Silene californica Dur. Indian pink Silene campanulata S. Wats. Red Mountain catchfly Silene campanulata ssp. glandulosa C.L. Hitchc. & Maguire Red Mountain catchfly Silene campanulata ssp. greenei (S. Wats.) C.L. Hitchc. & Maguire Greene's catchfly Silene conica L. striped corn catchfly Silene conoidea L. weed silene Silene dichotoma Ehrh. dichotoma silene Silene dioica (L.) Clairville red catchfly Silene douglasii Hook. Douglas's campion Silene douglasii var. douglasii Hook. Douglas's campion Silene douglasii var. oraria (M.E. Peck) C.L. Hitchc. & Maguire seabluff catchfly Silene drummondii Hook. Drummond's campion Silene drummondii var. drummondii Hook. Drummond's campion Silene gallica L. common catchfly Silene grayi S. Wats. Maui catchfly Silene hookeri Nutt. Hooker's silene Silene hookeri ssp. hookeri Nutt. Hooker's silene Silene hookeri ssp. pulverulenta (M.E. Peck) C.L. Hitchc. & Maguire Hooker's silene Silene latifolia Poir. bladder campion Silene latifolia ssp. alba (P. Mill.) Greuter & Burdet bladder campion Silene lemmonii S. Wats. Lemmon's catchfly Silene menziesii Hook. Menzies' campion Silene menziesii ssp. menziesii Hook. Menzies' campion Silene menziesii ssp. menziesii var. menziesii Hook. Menzies' campion Silene menziesii ssp. menziesii var. viscosa (Greene) C.L. Hitchc. & Maguire Menzies' campion Silene multinervia S. Wats. manynerve catchfly Silene noctiflora L. nightflowering silene Silene nuda (S. Wats.) C.L. Hitchc. & Maguire barestem silene Silene nuda ssp. insectivora (Henderson) C.L. Hitchc. & Maguire insecteating silene Silene oregana S. Wats. Oregon silene Silene parryi (S. Wats.) C.L. Hitchc. & Maguire Parry's silene Silene pendula L. nodding catchfly Silene scaposa B.L. Robins. stem silene Silene scaposa var. lobata C.L. Hitchc. & Maguire lostriver silene Silene scaposa var. scaposa B.L. Robins. Blue Mountain catchfly Silene scouleri Hook. Scouler's campion Silene scouleri ssp. scouleri Hook. Scouler's campion Silene scouleri ssp. scouleri var. pacifica (Eastw.) C.L. Hitchc. Scouler's campion Silene scouleri ssp. scouleri var. scouleri Hook. Scouler's campion Silene spaldingii S. Wats. Spalding's silene Silene suksdorfii B.L. Robins. Suksdorf's silene Silene vulgaris (Moench) Garcke maidenstears Spergula arvense L. corn spurry Spergula arvense var. arvense L. corn spurry Spergula arvense var. sativum (Boenn.) Mert. & Koch corn spurry Spergularia bocconii (Scheele) Foucaud ex Merino Boccone's sandspurry Spergularia canadensis (Pers.) G. Don Canadian sandspurry Spergularia canadensis var. occidentalis R.P. Rossb. western sandspurry Spergularia diandra (Guss.) Held. & Sart. diandra sandspurry Spergularia macrotheca (Hornem.) Heynh. sticky sandspurry Spergularia maritima (All.) Chiov. media sandspurry Spergularia rubra (L.) J.& K. Presl red sandspurry Spergularia salina J.& K. Presl salt sandspurry Spergularia salina var. salina J.& K. Presl salt sandspurry Spergularia villosa (Pers.) Camb. hairy sandspurry Stellaria alsine Grimm bog chickweed Stellaria borealis Bigelow boreal starwort Stellaria borealis ssp. borealis Bigelow boreal starwort Stellaria borealis ssp. sitchana (Steud.) Piper Sitka starwort Stellaria calycantha (Ledeb.) Bong. northern starwort Stellaria crispa Cham. & Schlecht. curled starwort Stellaria graminea L. grasslike starwort Stellaria humifusa Rottb. saltmarsh starwort Stellaria longifolia Muhl. ex Willd. longleaf starwort Stellaria longipes Goldie longstalk starwort Stellaria longipes ssp. longipes Goldie longstalk starwort Stellaria media (L.) Vill. common chickweed Stellaria nitens Nutt. shiny chickweed Stellaria obtusa Engelm. Rocky Mountain chickweed Stellaria umbellata Turcz. ex Kar. & Kir. umbrella starwort Vaccaria hispanica (P. Mill.) Rauschert cow soapwort Vaccaria vulgaris Host = Vaccaria hispanica CELASTRACEAE Euonymus occidentalis Nutt. ex Torr. western wahoo Euonymus occidentalis var. occidentalis Nutt. ex Torr. western wahoo Paxistima myrsinites (Pursh) Raf. boxleaf myrtle CERATOPHYLLACEAE Ceratophyllum demersum L. coon's tail Ceratophyllum echinatum Gray spineless hornwort CHENOPODIACEAE Allenrolfea occidentalis (S. Wats.) Kuntze iodinebush Atriplex argentea Nutt. silverscale saltbush Atriplex argentea ssp. argentea Nutt. silverscale saltbush Atriplex argentea ssp. argentea var. hillmanii M.E. Jones Hillman's silverscale saltbush Atriplex canescens (Pursh) Nutt. fourwing saltbush Atriplex confertifolia (Torr. & Frem.) S. Wats. shadscale saltbush Atriplex falcata (M.E. Jones) Standl. sickle saltbush Atriplex gmelinii C.A. Mey. ex Bong. Gmelin's saltbush Atriplex hortensis L. garden orache Atriplex patula L. spear saltbush Atriplex patula ssp. patula L. spear saltbush Atriplex prostrata Boucher ex DC. triangle orache Atriplex pusilla (Torr. ex S. Wats.) S. Wats. smooth saltbush Atriplex rosea L. tumbling saltweed Atriplex subspicata (Nutt.) Rydb. saline saltbush Atriplex truncata (Torr. ex S. Wats.) Gray wedgescale saltbush Bassia hyssopifolia (Pallas) Kuntz fivehorn smotherweed Beta vulgaris L. common beet Chenopodium album L. lambsquarters Chenopodium ambrosioides L. Mexican tea Chenopodium ambrosioides var. ambrosioides L. Mexican tea Chenopodium ambrosioides var. anthelminticum (L.) Aellen = Chenopodium ambrosioides var. ambrosioides Chenopodium atrovirens Rydb. pinyon goosefoot Chenopodium berlandieri Moq. pitseed goosefoot Chenopodium botrys L. Jerusalem oak goosefoot Chenopodium capitatum (L.) Ambrosi blite goosefoot Chenopodium carinatum R. Br. Tasmanian goosefoot Chenopodium carnosulum Moq. ridged goosefoot Chenopodium carnosulum var. carnosulum Moq. ridged goosefoot Chenopodium chenopodioides (L.) Aellen Chenopodium desiccatum A. Nels. aridland goosefoot Chenopodium foliosum (Moench) Aschers. leafy goosefoot Chenopodium fremontii S. Wats. Fremont's goosefoot Chenopodium fremontii var. fremontii S. Wats. Fremont's goosefoot Chenopodium glaucum L. oakleaf goosefoot Chenopodium hians Standl. hians goosefoot Chenopodium humile Hook. marshland goosefoot Chenopodium leptophyllum (Moq.) Nutt. ex S. Wats. narrowleaf goosefoot Chenopodium multifidum L. cutleaf goosefoot Chenopodium murale L. nettleleaf goosefoot Chenopodium nevadense Standl. Nevada goosefoot Chenopodium opulifolium Schrad. ex Koch & Ziz seaport goosefoot Chenopodium overi Aellen Over's goosefoot Chenopodium polyspermum L. manyseed goosefoot Chenopodium polyspermum var. acutifolium (Sm.) Gaud. manyseed goosefoot Chenopodium pumilio R. Br. clammy goosefoot Chenopodium rubrum L. red goosefoot Chenopodium salinum Standl. Rocky Mountain goosefoot Chenopodium simplex (Torr.) Raf. mapleleaf goosefoot Chenopodium subglabrum (S. Wats.) A. Nels. smooth goosefoot Chenopodium urbicum L. city goosefoot Corispermum hyssopifolium L. common bugseed Corispermum orientale Lam. oriental bugseed Eurotia lanata (Pursh) Moq. = Krascheninnikovia lanata Grayia spinosa (Hook.) Moq. spiny hopsage Halogeton glomeratus (Bieb.) C.A. Mey. halogeton Kochia americana S. Wats. greenmolly Kochia scoparia (L.) Schrad. common kochia Krascheninnikovia Guldenstaedt winterfat Krascheninnikovia lanata (Pursh) Guldenstaedt winterfat Monolepis nuttalliana (J.A. Schultes) Greene Nuttall's povertyweed Monolepis pusilla Torr. ex S. Wats. small monolepis Monolepis spathulata Gray beaver monolepis Nitrophila occidentalis (Moq.) S. Wats. western miterwort Salicornia maritima Wolff & Jefferies slender grasswort Salicornia rubra A. Nels. red swampfire Salicornia virginica L. Virginia glasswort Salsola kali L. prickly Russian thistle Salsola kali ssp. tragus (L.) Celak. prickly Russian thistle Sarcobatus vermiculatus (Hook.) Torr. greasewood Sarcocornia pacifica (Standl.) A.J. Scott Pacific swampfire Sarcocornia perennis (P. Mill.) A.J. Scott chickenclaws Spinacia oleracea L. spinach Suaeda calceoliformis (Hook.) Moq. Pursh seepweed Suaeda moquinii (Torr.) Greene Mojave seablite CLUSIACEAE Hypericum anagalloides Cham. & Schlecht. trailing St. Johnswort Hypericum calycinum L. Aaron's beard Hypericum formosum ssp. scouleri (Hook.) C.L. Hitchc. = Hypericum scouleri ssp. scouleri Hypericum perforatum L. common St. Johnswort Hypericum scouleri Hook. Scouler's St. Johnswort Hypericum scouleri ssp. nortoniae (M.E. Jones) J. Gillett Norton's St. Johnswort Hypericum scouleri ssp. scouleri Hook. Scouler's St. Johnswort COMPOSITAE Achillea lanulosa Nutt. = Achillea millefolium var. occidentalis Achillea millefolium L. common yarrow Achillea millefolium var. californica (Pollard) Jepson California yarrow Achillea millefolium var. litoralis Ehrend. ex Nobs coast yarrow Achillea millefolium var. millefolium L. common yarrow Achillea millefolium var. occidentalis DC. western yarrow Achillea millefolium var. pacifica (Rydb.) G.N. Jones Pacific yarrow Achyrachaena mollis Schauer blow wives Acroptilon repens (L.) DC. hardheads Adenocaulon bicolor Hook. American trailplant Ageratina occidentalis (Hook.) King & H.E. Robins. western snakeroot Agoseris apargioides (Less.) Greene woolly goat chicory Agoseris apargioides var. maritima (Sheldon) Q. Jones Agoseris aurantiaca (Hook.) Greene orange agoseris Agoseris aurantiaca var. aurantiaca (Hook.) Greene orange agoseris Agoseris elata (Nutt.) Greene tall agoseris Agoseris glauca (Pursh) Raf. pale agoseris Agoseris glauca var. agrestis (Osterhout) Q. Jones ex Cronq. pale agoseris Agoseris glauca var. dasycephala (Torr. & Gray) Jepson pale agoseris Agoseris glauca var. glauca (Pursh) Raf. pale agoseris Agoseris glauca var. laciniata (D.C. Eat.) Smiley false agoseris Agoseris glauca var. monticola (Greene) Q. Jones ex Cronq. pale agoseris Agoseris grandiflora (Nutt.) Greene bigflower agoseris Agoseris heterophylla (Nutt.) Greene annual agoseris Agoseris heterophylla var. crenulata Jepson annual agoseris Agoseris heterophylla var. heterophylla (Nutt.) Greene annual agoseris Agoseris heterophylla var. turgida (Hall) Jepson annual agoseris Agoseris retrorsa (Benth.) Greene spearleaf agoseris Ambrosia acanthicarpa Hook. flatspine burr ragweed Ambrosia artemisiifolia L. annual ragweed Ambrosia chamissonis (Less.) Greene silver burr ragweed Ambrosia psilostachya DC. Cuman ragweed Ambrosia trifida L. great ragweed Anaphalis margaritacea (L.) Benth. & Hook. f. western pearlyeverlasting Ancistrocarphus filagineus Gray false neststraw Antennaria anaphaloides Rydb. pearly pussytoes Antennaria arcuata Cronq. box pussytoes Antennaria argentea Benth. silver pussytoes Antennaria aromatica Evert scented pussytoes Antennaria corymbosa E. Nels. flattop pussytoes Antennaria dimorpha (Nutt.) Torr. & Gray low pussytoes Antennaria flagellaris (Gray) Gray whip pussytoes Antennaria geyeri Gray pinewoods pussytoes Antennaria howellii Greene Howell's pussytoes Antennaria howellii ssp. howellii Greene Howell's pussytoes Antennaria lanata (Hook.) Greene woolly pussytoes Antennaria luzuloides Torr. & Gray rush pussytoes Antennaria media Greene Rocky Mountain pussytoes Antennaria microphylla Rydb. littleleaf pussytoes Antennaria racemosa Hook. raceme pussytoes Antennaria rosea Greene rosy pussytoes Antennaria stenophylla (Gray) Gray narrowleaf pussytoes Antennaria suffrutescens Greene evergreen everlasting Antennaria umbrinella Rydb. umber pussytoes Anthemis altissima L. tall chamomile Anthemis arvensis L. corn chamomile Anthemis cotula L. stinking chamomile Arctium lappa L. greater burrdock Arctium minus Bernh. lesser burrdock Arnica X diversifolia Greene (pro sp.) rayless arnica Arnica amplexicaulis Nutt. clasping arnica Arnica cernua T.J. Howell serpentine arnica Arnica chamissonis Less. chamisso arnica Arnica chamissonis ssp. foliosa (Nutt.) Maguire chamisso arnica Arnica chamissonis ssp. foliosa var. andina (Nutt.) Ediger & Barkl. chamisso arnica Arnica chamissonis ssp. foliosa var. incana (Gray) Hulten chamisso arnica Arnica cordifolia Hook. heartleaf arnica Arnica discoidea Benth. rayless arnica Arnica fulgens Pursh foothill arnica Arnica gracilis Rydb. smallhead arnica Arnica latifolia Bong. broadleaf arnica Arnica longifolia D.C. Eat. spearleaf arnica Arnica mollis Hook. hairy arnica Arnica nevadensis Gray Nevada arnica Arnica parryi Gray Parry's arnica Arnica parryi ssp. parryi Gray Parry's arnica Arnica parryi ssp. sonnei (Greene) Maguire Sonne's arnica Arnica rydbergii Greene Rydberg's arnica Arnica sororia Greene twin arnica Arnica spathulata Greene Klamath arnica Arnica viscosa Gray Mt. Shasta arnica Artemisia absinthium L. European wormwood Artemisia annua L. sweet annie Artemisia arbuscula Nutt. low sagebrush Artemisia arbuscula ssp. arbuscula Nutt. gray low sagebrush Artemisia arbuscula ssp. longiloba (Osterhout) L. Shultz alkali sagebrush Artemisia arbuscula ssp. thermopola Beetle hotsprings sagebrush Artemisia biennis Willd. biennial wormwood Artemisia campestris L. field sagewort Artemisia campestris ssp. borealis (Pallas) Hall & Clements northern sagewort Artemisia campestris ssp. borealis var. scouleriana (Hook.) Cronq. Scouler's wormwood Artemisia campestris ssp. borealis var. wormskioldii (Bess. ex Hook.) Cronq. Wormskiold's wormwood Artemisia campestris ssp. pacifica (Nutt.) Hall & Clements Pacific wormwood Artemisia cana Pursh silver sagebrush Artemisia cana ssp. cana Pursh silver sagebrush Artemisia douglasiana Bess. Douglas' sagewort Artemisia dracunculoides Pursh = Artemisia dracunculus ssp. dracunculus Artemisia dracunculus L. Russian tarragon Artemisia dracunculus ssp. dracunculus L. false tarragon Artemisia lindleyana Bess. northwest sagebrush Artemisia ludoviciana Nutt. Louisiana sagewort Artemisia ludoviciana ssp. candicans (Rydb.) Keck gray sagewort Artemisia ludoviciana ssp. estesii Chambers Estes' sagebrush Artemisia ludoviciana ssp. incompta (Nutt.) Keck mountain sagewort Artemisia michauxiana Bess. Michaux's sagebrush Artemisia packardiae J. Grimes & Ertter Packard's wormwood Artemisia papposa Blake & Cronq. fuzzy sagebrush Artemisia pycnocephala (Less.) DC. beach wormwood Artemisia rigida (Nutt.) Gray stiff sagebrush Artemisia rothrockii Gray timberline sagebrush Artemisia spinescens D.C. Eat. bud sagebrush Artemisia suksdorfii Piper coastal wormwood Artemisia tilesii Ledeb. Tilesius' wormwood Artemisia tilesii ssp. unalaschcensis (Bess.) Hulten Alaska sagebrush Artemisia tridentata Nutt. big sagebrush Artemisia tridentata ssp. tridentata Nutt. basin big sagebrush Artemisia tridentata ssp. vaseyana (Rydb.) Beetle mountain big sagebrush Artemisia tripartita Rydb. threetip sagebrush Artemisia tripartita ssp. tripartita Rydb. Idaho threetip sagebrush Artemisia vulgaris L. common wormwood Artemisia vulgaris var. douglasiana (Bess.) St. John = Artemisia douglasiana Aster alpigenus ssp. alpigenus (Torr. & Gray) Gray tundra aster Aster ascendens Lindl. Chile aster Aster borealis (Torr. & Gray) Prov. rush aster Aster bracteolatus Nutt. (pro sp.) bract aster Aster brickellioides var. brickellioides Greene brickellbush aster Aster campestris Nutt. meadow aster Aster campestris var. bloomeri (Gray) Gray Bloomer's aster Aster campestris var. campestris Nutt. western meadow aster Aster canescens Pursh = Machaeranthera canescens ssp. canescens var. canescens Aster chilensis Nees creeping aster Aster conspicuus Lindl. showy aster Aster cusickii Gray Cusick's aster Aster eatonii (Gray) T.J. Howell Eaton's aster Aster ericoides L. heath aster Aster ericoides var. pansus (Blake) Boivin manyflowered aster Aster falcatus Lindl. cluster aster Aster falcatus var. crassulus (Rydb.) Cronq. rough white prairie aster Aster foliaceus Lindl. ex DC. alpine leafybract aster Aster foliaceus var. apricus Gray leafybract aster Aster foliaceus var. canbyi Gray Canby's aster Aster foliaceus var. parryi (D.C. Eat.) Gray Parry's aster Aster hallii Gray Hall's aster Aster hendersonii Fern. Lyall aster Aster integrifolius Nutt. thickstem aster Aster ledophyllus (Gray) Gray Cascade aster Aster ledophyllus var. ledophyllus (Gray) Gray Cascade aster Aster meritus A. Nels. Aster occidentalis (Nutt.) Torr. & Gray western aster Aster occidentalis var. intermedius Gray intermediate aster Aster occidentalis var. occidentalis (Nutt.) Torr. & Gray western aster Aster oregonensis ssp. oregonensis (Nutt.) Cronq. Oregon aster Aster perelegans A. Nels. & J.F. Macbr. elegant aster Aster radulinus Gray roughleaf aster Aster shastensis (Gray) Gray = Machaeranthera canescens ssp. canescens var. shastensis Aster sibiricus L. Siberian aster Aster subspicatus Nees Douglas aster Aster subspicatus var. grayi (Suksdorf) Cronq. Gray's aster Aster subspicatus var. subspicatus Nees leafybract aster Baccharis douglasii DC. saltmarsh baccharis Baccharis pilularis DC. coyotebrush Balsamita major Desf. costmary Balsamorhiza X terebinthacea (Hook.) Nutt. (pro sp.) balsamroot Balsamorhiza careyana Gray Carey's balsamroot Balsamorhiza careyana var. careyana Gray Carey's balsamroot Balsamorhiza careyana var. intermedia Cronq. intermediate balsamroot Balsamorhiza deltoidea Nutt. deltoid balsamroot Balsamorhiza hookeri (Hook.) Nutt. Hooker's balsamroot Balsamorhiza hookeri var. hirsuta (Nutt.) A. Nels. hairy balsamroot Balsamorhiza incana Nutt. hoary balsamroot Balsamorhiza macrolepis Sharp California balsamroot Balsamorhiza macrolepis var. platylepis (Sharp) Ferris California balsamroot Balsamorhiza sagittata (Pursh) Nutt. arrowleaf balsamroot Balsamorhiza sericea W.A. Weber silky balsamroot Balsamorhiza serrata A. Nels. & J.F. Macbr. serrate balsamroot Bellis perennis L. lawndaisy Berkheya heterophylla O. Hoffmann prickly gousblom Bidens acuta (Wieg.) Britt. = Bidens tripartita Bidens beckii Torr. ex Spreng. = Megalodonta beckii var. beckii Bidens cernua L. nodding beggartick Bidens frondosa L. devil's beggartick Bidens tripartita L. threelobe beggarticks Bidens vulgata Greene big devils beggartick Blepharipappus scaber Hook. rough eyelashweed Blepharipappus scaber ssp. laevis (Gray) Keck rough eyelashweed Blepharipappus scaber ssp. scaber Hook. rough eyelashweed Boltonia asteroides (L.) L'Her. white doll's daisy Boltonia asteroides var. recognita (Fern. & Grisc.) Cronq. white doll's daisy Brachyactis frondosa (Nutt.) Gray leafy rayless aster Brickellia californica (Torr. & Gray) Gray California brickellbush Brickellia grandiflora (Hook.) Nutt. tasselflower brickellbush Brickellia greenei Gray Greene brickellbush Brickellia microphylla (Nutt.) Gray littleleaf brickellbush Brickellia microphylla var. microphylla (Nutt.) Gray littleleaf brickellbush Brickellia oblongifolia Nutt. Mojave brickellbush Brickellia oblongifolia var. linifolia (D.C. Eat.) B.L. Robins. narrowleaf brickellbush Brickellia oblongifolia var. oblongifolia Nutt. narrowleaf brickellbush Cacalia nardosmia Gray = Cacaliopsis nardosmia Cacaliopsis nardosmia (Gray) Gray silvercrown Calycadenia fremontii Gray Fremont's western rosinweed Calycadenia truncata DC. Oregon western rosinweed Calycadenia truncata ssp. scabrella (E. Drew) Keck Oregon western rosinweed Carduus nutans L. nodding plumeless thistle Carduus pycnocephalus L. Italian plumeless thistle Carduus tenuiflorus W. Curtis winged plumeless thistle Centaurea biebersteinii DC. spotted knapweed Centaurea calcitrapa L. red star thistle Centaurea cyanus L. garden cornflower Centaurea diffusa Lam. white knapweed Centaurea jacea L. brownray knapweed Centaurea melitensis L. Maltese star thistle Centaurea nigra L. lesser knapweed Centaurea nigrescens Willd. Tyrol knapweed Centaurea repens L. = Acroptilon repens Centaurea solstitialis L. yellow star thistle Chaenactis cusickii Gray Cusick's pincushion Chaenactis douglasii (Hook.) Hook. & Arn. Douglas' dustymaiden Chaenactis douglasii var. alpina Gray alpine dustymaiden Chaenactis douglasii var. douglasii (Hook.) Hook. & Arn. Douglas' dustymaiden Chaenactis macrantha D.C. Eat. bighead dustymaiden Chaenactis nevii Gray John Day's pincushion Chaenactis stevioides Hook. & Arn. Steve's dustymaiden Chaenactis xantiana Gray fleshcolor pincushion Chaetadelpha wheeleri Gray ex S. Wats. Wheeler's skeletonweed Chamaemelum mixtum (L.) All. weedy dogfennel Chrysanthemum balsamita (L.) Baill., non L. = Balsamita major Chrysanthemum leucanthemum L. = Leucanthemum vulgare Chrysanthemum parthenium (L.) Bernh. = Tanacetum parthenium Chrysothamnus frigidus Greene = Ericameria nauseosa ssp. nauseosa var. nauseosa Chrysothamnus humilis Greene Truckee rabbitbrush Chrysothamnus nauseosus = Ericameria nauseosa Chrysothamnus viscidiflorus (Hook.) Nutt. green rabbitbrush Chrysothamnus viscidiflorus ssp. viscidiflorus (Hook.) Nutt. green rabbitbrush Chrysothamnus viscidiflorus ssp. viscidiflorus var. stenophyllus (Gray) Hall green rabbitbrush Chrysothamnus viscidiflorus ssp. viscidiflorus var. viscidiflorus (Hook.) Nutt. green rabbitbrush Cichorium intybus L. chicory Cirsium arvense (L.) Scop. Canadian thistle Cirsium brevifolium Nutt. Palouse thistle Cirsium brevistylum Cronq. clustered thistle Cirsium canovirens (Rydb.) Petrak graygreen thistle Cirsium ciliolatum (Henderson) J.T. Howell Ashland thistle Cirsium cymosum (Greene) J.T. Howell peregrine thistle Cirsium douglasii DC. Douglas' thistle Cirsium douglasii var. breweri (Petrak) Keil & C. Turner Cirsium edule Nutt. edible thistle Cirsium foliosum (Hook.) DC. elk thistle Cirsium hallii (Gray) M.E. Jones Hall's thistle Cirsium neomexicanum Gray New Mexico thistle Cirsium neomexicanum var. utahense (Petrak) Welsh Utah thistle Cirsium pastoris J.T. Howell snowy thistle Cirsium peckii Henderson Steen Mountain thistle Cirsium remotifolium (Hook.) DC. fewleaf thistle Cirsium remotifolium ssp. oregonense Petrak Cirsium remotifolium ssp. pseudocarlinoides Petrak Cirsium remotifolium ssp. remotifolium (Hook.) DC. Cirsium remotifolium var. remotifolium (Hook.) DC. fewleaf thistle Cirsium scariosum Nutt. meadow thistle Cirsium scariosum var. scariosum Nutt. meadow thistle Cirsium subniveum Rydb. Jackson Hole thistle Cirsium undulatum (Nutt.) Spreng. wavyleaf thistle Cirsium undulatum var. undulatum (Nutt.) Spreng. wavyleaf thistle Cirsium vulgare (Savi) Ten. bull thistle Cnicus benedictus L. blessed thistle Columbiadoria hallii (Gray) Nesom Hall's columbiadoria Conyza bonariensis (L.) Cronq. asthmaweed Conyza bonariensis var. leiotheca (Blake) Cuatrec. asthmaweed Conyza canadensis (L.) Cronq. Canadian horseweed Conyza canadensis var. glabrata (Gray) Cronq. Canadian horseweed Coreopsis tinctoria Nutt. golden tickseed Coreopsis tinctoria var. atkinsoniana (Dougl. ex Lindl.) H.M. Parker Atkinson's tickseed Coreopsis tinctoria var. tinctoria Nutt. golden tickseed Cotula australis (Sieber) Hook. f. Australian waterbuttons Cotula coronopifolia L. common brassbuttons Crepis acuminata Nutt. longleaf hawksbeard Crepis acuminata ssp. acuminata Nutt. longleaf hawksbeard Crepis atribarba Heller slender hawksbeard Crepis atribarba ssp. atribarba Heller slender hawksbeard Crepis atribarba ssp. originalis (Babcock & Stebbins) Babcock & Stebbins slender hawksbeard Crepis bakeri Greene Baker's hawksbeard Crepis bakeri ssp. bakeri Greene Baker's hawksbeard Crepis bakeri ssp. cusickii (Eastw.) Babcock & Stebbins Cusick's hawksbeard Crepis capillaris Wallr. smooth hawksbeard Crepis intermedia Gray limestone hawksbeard Crepis modocensis Greene Siskiyou hawksbeard Crepis modocensis ssp. modocensis Greene Modoc hawksbeard Crepis modocensis ssp. subacaulis (Kellogg) Babcock & Stebbins Siskiyou hawksbeard Crepis monticola Coville mountain hawksbeard Crepis nana Richards. dwarf alpine hawksbeard Crepis nana ssp. nana Richards. dwarf alpine hawksbeard Crepis nana ssp. ramosa Babcock dwarf alpine hawksbeard Crepis occidentalis Nutt. largeflower hawksbeard Crepis occidentalis ssp. conjuncta (Jepson) Babcock & Stebbins largeflower hawksbeard Crepis occidentalis ssp. costata (Gray) Babcock & Stebbins largeflower hawksbeard Crepis occidentalis ssp. occidentalis Nutt. largeflower hawksbeard Crepis occidentalis ssp. pumila (Rydb.) Babcock & Stebbins largeflower hawksbeard Crepis pleurocarpa Gray nakedstem hawksbeard Crepis pulchra L. smallflower hawksbeard Crepis riparia A. Nels. = Crepis runcinata ssp. hispidulosa Crepis runcinata (James) Torr. & Gray fiddleleaf hawksbeard Crepis runcinata ssp. hispidulosa (T.J. Howell ex Rydb.) Babcock & Stebbins fiddleleaf hawksbeard Crepis runcinata ssp. imbricata Babcock & Stebbins fiddleleaf hawksbeard Crepis runcinata ssp. runcinata (James) Torr. & Gray fiddleleaf hawksbeard Crepis setosa Haller f. bristly hawksbeard Crocidium multicaule Hook. common springgold Dimeresia howellii Gray doublet Dugaldia hoopesii (Gray) Rydb. = Hymenoxys hoopesii Eatonella nivea (D.C. Eat.) Gray white false tickhead Erechtites glomerata (Desf. ex Poir.) DC. cutleaf burnweed Erechtites hieraciifolia (L.) Raf. ex DC. American burnweed Erechtites hieraciifolia var. hieraciifolia (L.) Raf. ex DC. American burnweed Erechtites minima (Poir.) DC. coastal burnweed Ericameria arborescens (Gray) Greene goldenfleece Ericameria bloomeri (Gray) J.F. Macbr. rabbitbush heathgoldenrod Ericameria discoidea (Nutt.) Nesom whitestem heathgoldenrod Ericameria discoidea var. discoidea (Nutt.) Nesom whitestem heathgoldenrod Ericameria greenei (Gray) Nesom Greene's heathgoldenrod Ericameria humilis (Greene) L.C. Anders. = Chrysothamnus humilis Ericameria nauseosa (Pallas ex Pursh) Nesom & Baird Ericameria nauseosa ssp. consimilis (Greene) Nesom & Baird Ericameria nauseosa ssp. consimilis var. oreophila Ericameria nauseosa ssp. nauseosa (Pallas ex Pursh) Nesom & Baird Ericameria nauseosa ssp. nauseosa var. nana Ericameria nauseosa ssp. nauseosa var. nauseosa Ericameria nauseosa ssp. nauseosa var. speciosa Ericameria resinosa Nutt. Columbian heathgoldenrod Ericameria suffruticosa (Nutt.) Nesom singlehead heathgoldenrod Ericameria viscidiflora (Hook.) L.C. Anders. = Chrysothamnus viscidiflorus ssp. viscidiflorus var. viscidiflorus Erigeron acris L. Erigeron acris ssp. acris L. Erigeron acris ssp. acris var. debilis Erigeron acris ssp. politus (Fries) Schinz & R. Keller Erigeron aliceae T.J. Howell Alice Eastwood's fleabane Erigeron annuus (L.) Pers. eastern daisy fleabane Erigeron aphanactis (Gray) Greene rayless shaggy fleabane Erigeron aphanactis var. aphanactis (Gray) Greene rayless shaggy fleabane Erigeron austiniae Greene dwarf yellow fleabane Erigeron bloomeri Gray scabland fleabane Erigeron bloomeri var. bloomeri Gray scabland fleabane Erigeron bloomeri var. nudatus (Gray) Cronq. scabland fleabane Erigeron canadensis = Conyza canadensis Erigeron cascadensis Heller Cascade fleabane Erigeron cervinus Greene Siskiyou fleabane Erigeron chrysopsidis Gray dwarf yellow fleabane Erigeron chrysopsidis ssp. chrysopsidis Gray dwarf yellow fleabane Erigeron compositus Pursh cutleaf daisy Erigeron compositus var. compositus Pursh dwarf mountain fleabane Erigeron corymbosus Nutt. longleaf fleabane Erigeron coulteri Porter large mountain fleabane Erigeron decumbens Nutt. Willamette fleabane Erigeron decumbens var. decumbens Nutt. Willamette fleabane Erigeron disparipilus Cronq. white cushion fleabane Erigeron divergens Torr. & Gray spreading fleabane Erigeron eatonii Gray Eaton's fleabane Erigeron eatonii var. lavandulus Strother & Ferlatte Eaton's fleabane Erigeron eatonii var. plantagineus (Greene) Cronq. Eaton's fleabane Erigeron eatonii var. villosus (Cronq.) Cronq. Eaton's fleabane Erigeron elegantulus Greene blue dwarf fleabane Erigeron engelmannii A. Nels. Engelmann's fleabane Erigeron engelmannii var. davisii (Cronq.) Cronq. Davis' fleabane Erigeron filifolius (Hook.) Nutt. threadleaf fleabane Erigeron filifolius var. filifolius (Hook.) Nutt. threadleaf fleabane Erigeron filifolius var. robustior M.E. Peck threadleaf fleabane Erigeron foliosus Nutt. leafy fleabane Erigeron foliosus var. confinis (T.J. Howell) Jepson leafy fleabane Erigeron foliosus var. foliosus Nutt. leafy fleabane Erigeron foliosus var. hartwegii (Greene) Jepson Hartweg's fleabane Erigeron glaucus Ker-Gawl. seaside fleabane Erigeron howellii Gray Howell's fleabane Erigeron inornatus (Gray) Gray California rayless fleabane Erigeron inornatus var. inornatus (Gray) Gray California rayless fleabane Erigeron linearis (Hook.) Piper desert yellow fleabane Erigeron lonchophyllus Hook. Erigeron oreganus Gray gorge fleabane Erigeron peregrinus (Banks ex Pursh) Greene subalpine fleabane Erigeron peregrinus ssp. callianthemus (Greene) Cronq. subalpine fleabane Erigeron peregrinus ssp. callianthemus var. angustifolius (Gray) Cronq. subalpine fleabane Erigeron peregrinus ssp. callianthemus var. callianthemus (Greene) Cronq. subalpine fleabane Erigeron peregrinus ssp. callianthemus var. scaposus (Torr. & Gray) Cronq. subalpine fleabane Erigeron peregrinus ssp. peregrinus (Banks ex Pursh) Greene subalpine fleabane Erigeron peregrinus ssp. peregrinus var. peregrinus (Banks ex Pursh) Greene subalpine fleabane Erigeron petrophilus Greene cliff fleabane Erigeron philadelphicus L. Philadelphia fleabane Erigeron poliospermus Gray purple cushion fleabane Erigeron poliospermus var. poliospermus Gray purple cushion fleabane Erigeron pumilus Nutt. shaggy fleabane Erigeron pumilus ssp. intermedius Cronq. shaggy fleabane Erigeron pumilus ssp. intermedius var. gracilior Cronq. shaggy fleabane Erigeron pumilus ssp. intermedius var. intermedius (Cronq.) Cronq. shaggy fleabane Erigeron simplex Greene onestem fleabane Erigeron speciosus (Lindl.) DC. aspen fleabane Erigeron speciosus var. macranthus (Nutt.) Cronq. aspen fleabane Erigeron speciosus var. speciosus (Lindl.) DC. aspen fleabane Erigeron strigosus Muhl. ex Willd. prairie fleabane Erigeron tener (Gray) Gray slender fleabane Erigeron vagus Payson rambling fleabane Eriophyllum lanatum (Pursh) Forbes woolly eriophyllum Eriophyllum lanatum var. achillaeoides (DC.) Jepson common woollysunflower Eriophyllum lanatum var. integrifolium (Hook.) Smiley common woollysunflower Eriophyllum lanatum var. lanatum (Pursh) Forbes common woollysunflower Eriophyllum lanatum var. lanceolatum (T.J. Howell) Jepson common woollysunflower Eriophyllum stoechadifolium Lag. seaside woollysunflower Eucephalus brickellioides (Greene) Nesom Eucephalus glabratus (Greene) Greene Eucephalus glaucescens (Gray) Greene Eucephalus gormanii Piper Eucephalus ledophyllus (Gray) Greene Eucephalus ledophyllus var. covillei (Greene) Nesom Eucephalus perelegans (A. Nels. & J.F. Macbr.) W.A. Weber = Aster perelegans Eucephalus vialis Bradshaw Euchiton gymnocephalus (DC.) A. Anderb. Euchiton japonicus (Thunb.) A. Anderb. Eupatorium occidentale Hook. = Ageratina occidentalis Euthamia occidentalis Nutt. western goldentop Filago vulgaris Lam. common cottonrose Franseria = Ambrosia Gaillardia aristata Pursh common gaillardia Gamochaeta purpurea (L.) Cabrera spoonleaf purple everlasting Glyptopleura marginata D.C. Eat. carveseed Gnaphalium californicum DC. = Pseudognaphalium californicum Gnaphalium margaritaceum L. = Anaphalis margaritacea Gnaphalium microcephalum Nutt. = Pseudognaphalium canescens ssp. microcephalum Gnaphalium palustre Nutt. western marsh cudweed Gnaphalium uliginosum L. marsh cudweed Gnaphalium viscosum Kunth = Pseudognaphalium viscosum Grindelia columbiana (Piper) Rydb. Columbia River gumweed Grindelia integrifolia DC. Puget Sound gumweed Grindelia integrifolia var. integrifolia DC. Puget Sound gumweed Grindelia nana Nutt. Idaho gumweed Grindelia nana var. integerrima (Rydb.) Steyermark Idaho gumweed Grindelia nana var. nana Nutt. Idaho gumweed Grindelia squarrosa var. integrifolia (Nutt.) Boivin = Grindelia nana var. nana Grindelia stricta DC. Grindelia stricta var. stricta DC. Gutierrezia microcephala (DC.) Gray threadleaf snakeweed Gutierrezia sarothrae (Pursh) Britt. & Rusby broom snakeweed Haplopappus acaulis (Nutt.) Gray = Stenotus acaulis var. acaulis Haplopappus alpigenus Torr. & Gray = Oreostemma alpigenum var. alpigenum Haplopappus arborescens (Gray) Hall = Ericameria arborescens Haplopappus bloomeri Gray = Ericameria bloomeri Haplopappus carthamoides (Hook.) Gray = Pyrrocoma carthamoides var. carthamoides Haplopappus contractus Hall = Pyrrocoma uniflora var. uniflora Haplopappus greenei Gray = Ericameria greenei Haplopappus greenei var. mollis Gray = Ericameria greenei Haplopappus hallii Gray = Columbiadoria hallii Haplopappus hirtus Gray = Pyrrocoma hirta var. hirta Haplopappus lanuginosus Gray = Stenotus lanuginosus var. lanuginosus Haplopappus lyallii Gray = Tonestus lyallii Haplopappus macronema (Nutt.) Gray = Ericameria discoidea var. discoidea Haplopappus racemosus (Nutt.) Torr. = Pyrrocoma racemosa var. racemosa Haplopappus radiatus (Nutt.) Cronq. = Pyrrocoma radiata Haplopappus resinosus (Nutt.) Gray = Ericameria resinosa Haplopappus stenophyllus Gray = Stenotus stenophyllus Haplopappus suffruticosus (Nutt.) Gray = Ericameria suffruticosa Haplopappus uniflorus (Hook.) Torr. & Gray = Pyrrocoma uniflora var. uniflora Haplopappus whitneyi Gray = Hazardia whitneyi var. whitneyi Hazardia whitneyi (Gray) Greene Whitney's bristleweed Hazardia whitneyi var. discoidea (J.T. Howell) W.D. Clark Whitney's bristleweed Hazardia whitneyi var. whitneyi (Gray) Greene Whitney's bristleweed Helenium autumnale L. common sneezeweed Helenium autumnale var. autumnale L. common sneezeweed Helenium autumnale var. grandiflorum (Nutt.) Torr. & Gray fall sneezeweed Helenium autumnale var. montanum (Nutt.) Fern. mountain sneezeweed Helenium bigelovii Gray Bigelow's sneezeweed Helenium bolanderi Gray coastal sneezeweed Helenium hoopesii Gray = Hymenoxys hoopesii Helenium puberulum DC. rosilla Helianthella californica Gray California helianthella Helianthella californica var. nevadensis (Greene) Jepson Nevada helianthella Helianthella quinquenervis (Hook.) Gray fivenerve helianthella Helianthella uniflora (Nutt.) Torr. & Gray oneflower helianthella Helianthella uniflora var. douglasii (Torr. & Gray) W.A. Weber Douglas' helianthella Helianthella uniflora var. uniflora (Nutt.) Torr. & Gray oneflower helianthella Helianthus X laetiflorus Pers. (pro sp.) mountain sunflower Helianthus annuus L. common sunflower Helianthus bolanderi Gray serpentine sunflower Helianthus cusickii Gray Cusick's sunflower Helianthus nuttallii Torr. & Gray Nuttall's sunflower Helianthus nuttallii ssp. nuttallii Torr. & Gray Nuttall's sunflower Helianthus petiolaris Nutt. prairie sunflower Helianthus petiolaris ssp. petiolaris Nutt. prairie sunflower Hemizonia congesta DC. hayfield tarweed Hemizonia congesta ssp. clevelandii (Greene) Babcock & Hall Hemizonia fitchii Gray Fitch's tarweed Hemizonia pungens (Hook. & Arn.) Torr. & Gray common spikeweed Hemizonia pungens ssp. pungens (Hook. & Arn.) Torr. & Gray common tarweed Hemizonia pungens ssp. septentrionalis Keck common tarweed Hesperevax sparsiflora (Gray) Greene fewflower hesperevax Hesperevax sparsiflora var. sparsiflora (Gray) Greene fewflower hesperevax Heterotheca oregona (Nutt.) Shinners Oregon goldenaster Heterotheca oregona var. oregona (Nutt.) Shinners Oregon goldenaster Heterotheca oregona var. rudis (Greene) Semple Oregon goldenaster Heterotheca villosa (Pursh) Shinners hairy goldenaster Heterotheca villosa var. hispida (Hook.) Harms bristly hairy goldaster Heterotheca villosa var. villosa (Pursh) Shinners hairy goldenaster Heterotheca viscida (Gray) Harms cliff falsegoldenaster Hieracium albiflorum Hook. white hawkweed Hieracium aurantiacum L. orange hawkweed Hieracium bolanderi Gray Bolander's hawkweed Hieracium canadense Michx. Canadian hawkweed Hieracium canadense var. canadense Michx. Canadian hawkweed Hieracium cynoglossoides Arv.-Touv. houndstongue hawkweed Hieracium gracile Hook. slender hawkweed Hieracium gracile var. gracile Hook. slender hawkweed Hieracium greenei Gray Greene's hawkweed Hieracium horridum Fries prickly hawkweed Hieracium longiberbe T.J. Howell longbeard hawkweed Hieracium pilosella L. mouseear hawkweed Hieracium scouleri Hook. woollyweed Hieracium scouleri var. nudicaule (Gray) Cronq. woollyweed Hieracium scouleri var. scouleri Hook. Scouler's woollyweed Hieracium umbellatum L. narrowleaf hawkweed Hulsea algida Gray pain hulsea Hulsea nana Gray dwarf alpinegold Hymenopappus filifolius Hook. fineleaf hymenopappus Hymenopappus filifolius var. filifolius Hook. fineleaf hymenopappus Hymenoxys cooperi (Gray) Cockerell Cooper's hymenoxys Hymenoxys cooperi var. canescens (D.C. Eat.) Parker Cooper's hymenoxys Hymenoxys hoopesii (Gray) Bierner orange sneezeweed Hypochaeris glabra L. smooth catsear Hypochaeris radicata L. hairy catsear Inula helenium L. elecampane inula Ionactis alpina (Nutt.) Greene alpine ionactis Iva axillaris Pursh povertyweed Iva xanthifolia Nutt. giant sumpweed Jaumea carnosa (Less.) Gray marsh jaumea Lactuca biennis (Moench) Fern. tall blue lettuce Lactuca canadensis L. Canada lettuce Lactuca ludoviciana (Nutt.) Riddell biannual lettuce Lactuca pulchella (Pursh) DC. = Lactuca tatarica var. pulchella Lactuca saligna L. willowleaf lettuce Lactuca sativa L. garden lettuce Lactuca scariola L. = Lactuca serriola Lactuca serriola L. prickly lettuce Lactuca tatarica (L.) C.A. Mey. blue lettuce Lagophylla ramosissima Nutt. branched lagophylla Lapsana apogonoides Maxim. Japanese nipplewort Lapsana communis L. common nipplewort Lasthenia californica DC. ex Lindl. California goldfields Lasthenia glaberrima DC. smooth goldfields Lasthenia macrantha (Gray) Greene pickleweed Lasthenia macrantha ssp. macrantha (Gray) Greene perennial goldfields Lasthenia macrantha ssp. prisca Ornduff perennial goldfields Lasthenia maritima (Gray) Ornduff seaside goldfields Layia glandulosa (Hook.) Hook. & Arn. whitedaisy tidytips Layia glandulosa ssp. glandulosa (Hook.) Hook. & Arn. whitedaisy tidytips Leontodon hirtus L. rough hawkbit Leontodon hispidus L. bristly hawkbit Leontodon hispidus ssp. hispidus L. bristly hawkbit Leontodon taraxacoides (Vill.) Merat lesser hawkbit Lessingia filaginifolia (Hook. & Arn.) M.A. Lane Lessingia filaginifolia var. californica (DC.) M.A. Lane Leucanthemum leucanthemum (L.) Rydb. = Leucanthemum vulgare Leucanthemum maximum (Ramond) DC. Shasta daisy Leucanthemum vulgare Lam. oxeyedaisy Luina hypoleuca Benth. littleleaf silverback Luina serpentina Cronq. creeping silverback Lygodesmia . = Stephanomeria Machaeranthera canescens (Pursh) Gray hoary aster Machaeranthera canescens ssp. canescens (Pursh) Gray hoary aster Machaeranthera canescens ssp. canescens var. canescens (Pursh) Gray cutleaf goldenweed Machaeranthera canescens ssp. canescens var. incana (Lindl.) Gray cutleaf goldenweed Machaeranthera canescens ssp. canescens var. leucanthemifolia (Greene) Welsh whiteflower machaeranthera Machaeranthera canescens ssp. canescens var. shastensis (Gray) B.L. Turner Shasta machaeranthera Madia bolanderi (Gray) Gray Bolander's madia Madia citriodora Greene lemonscented madia Madia elegans D. Don ex Lindl. common madia Madia elegans ssp. densifolia (Greene) Keck showy tarweed Madia elegans ssp. elegans D. Don ex Lindl. common madia Madia elegans ssp. vernalis Keck spring madia Madia exigua (Sm.) Gray small tarweed Madia glomerata Hook. mountain tarweed Madia gracilis (Sm.) Keck & J. Clausen ex Applegate grassy tarweed Madia gracilis ssp. gracilis (Sm.) Keck & J. Clausen ex Applegate grassy tarweed Madia madioides (Nutt.) Greene woodland madia Madia minima (Gray) Keck oppositeleaved tarweed Madia sativa Molina coast tarweed Malacothrix glabrata (Gray ex D.C. Eat.) Gray smooth desertdandelion Malacothrix torreyi Gray Torrey's desertdandelion Matricaria chamomilla L. 1755 & 1763, non 1753 = Matricaria recutita Matricaria discoidea DC. disc mayweed Matricaria matricarioides (Less.) Porter = Matricaria discoidea Matricaria occidentalis Greene valley mayweed Matricaria perforata Merat scentless mayweed Matricaria recutita L. mayweed Matricaria suaveolens (Pursh) Buch., non L. = Matricaria discoidea Matricaria suaveolens L. = Matricaria recutita Matricaria suffruticosa (L.) Druce shrubby mayweed Megalodonta beckii (Torr. ex Spreng.) Greene aquatic beggartick Megalodonta beckii var. beckii (Torr. ex Spreng.) Greene Beck's watermarigold Micropus californicus Fisch. & C.A. Mey. q tips Micropus californicus var. californicus Fisch. & C.A. Mey. slender cottonweed Microseris acuminata Greene Sierran foothill silverpuffs Microseris bigelovii (Gray) Schultz-Bip. coastal silverpuffs Microseris borealis (Bong.) Schultz-Bip. apargidium Microseris howellii Gray Howell's silverpuffs Microseris laciniata (Hook.) Schultz-Bip. cutleaf silverpuffs Microseris laciniata ssp. detlingii Chambers Detling's silverpuffs Microseris laciniata ssp. laciniata (Hook.) Schultz-Bip. cutleaf silverpuffs Microseris laciniata ssp. leptosepala (Nutt.) Chambers cutleaf silverpuffs Microseris laciniata var. siskiyouensis Chambers Microseris nutans (Hook.) Schultz-Bip. nodding microceris Microseris nutans ssp. nutans (Hook.) Schultz-Bip. nodding silverpuffs Mycelis muralis (L.) Dumort. walllettuce Nothocalais alpestris (Gray) Chambers alpine lake prairiedandelion Nothocalais troximoides (Gray) Greene weevil microseris Onopordum acanthium L. Scotch cottonthistle Oreostemma Greene Oreostemma alpigenum (Torr. & Gray) Nesom Oreostemma alpigenum var. alpigenum (Torr. & Gray) Nesom Oreostemma alpigenum var. andersonii (Gray) Nesom Oreostemma alpigenum var. haydenii (Porter) Nesom Petasites frigidus (L.) Fries Arctic sweet coltsfoot Petasites frigidus var. palmatus (Ait.) Cronq. Arctic sweet coltsfoot Petasites palmatus (Ait.) Gray = Petasites frigidus var. palmatus Prenanthes alata (Hook.) D. Dietr. western rattlesnakeroot Pseudognaphalium californicum (DC.) A. Anderb. Pseudognaphalium canescens (DC.) W.A. Weber Pseudognaphalium canescens ssp. microcephalum (Nutt.) Kartesz, comb. nov. ined. Pseudognaphalium luteoalbum (L.) Hilliard & Burtt Pseudognaphalium stramineum (Kunth) W.A. Weber Pseudognaphalium viscosum (Kunth) W.A. Weber Psilocarphus brevissimus Nutt. short woollyheads Psilocarphus brevissimus var. brevissimus Nutt. short woollyheads Psilocarphus elatior (Gray) Gray meadow woollyheads Psilocarphus oregonus Nutt. Oregon woollyheads Psilocarphus tenellus Nutt. slender woollyheads Psilocarphus tenellus var. tenellus Nutt. slender woollyheads Pyrrocoma carthamoides Hook. largeflower goldenweed Pyrrocoma carthamoides var. carthamoides Hook. loved goldenweed Pyrrocoma carthamoides var. cusickii (Gray) Kartesz & Gandhi narrowhead goldenweed Pyrrocoma hirta (Gray) Greene tacky goldenweed Pyrrocoma hirta var. hirta (Gray) Greene hairy goldenweed Pyrrocoma hirta var. sonchifolia (Greene) Kartesz & Gandhi tacky goldenweed Pyrrocoma lanceolata (Hook.) Greene lanceleaf goldenweed Pyrrocoma linearis (Keck) Kartesz & Gandhi thinleaf goldenhead Pyrrocoma racemosa (Nutt.) Torr. & Gray clustered goldenweed Pyrrocoma racemosa var. paniculata (Nutt.) Kartesz & Gandhi clustered goldenweed Pyrrocoma racemosa var. racemosa (Nutt.) Torr. & Gray clustered goldenweed Pyrrocoma radiata Nutt. ray goldenweed Pyrrocoma uniflora (Hook.) Greene plantain goldenweed Pyrrocoma uniflora var. uniflora (Hook.) Greene plantain goldenweed Rafinesquia californica Nutt. California plumseed Raillardella argentea (Gray) Gray silky raillardella Raillardella scaposa (Gray) Gray stem raillardella Rainiera stricta (Greene) Greene false silverback Rigiopappus leptocladus Gray wireweed Rudbeckia californica Gray California coneflower Rudbeckia glaucescens Eastw. Rudbeckia montana Gray Rudbeckia occidentalis Nutt. western coneflower Rudbeckia occidentalis var. occidentalis Nutt. western coneflower Saussurea americana D.C. Eat. American saussurea Senecio bicolor (Willd.) Todaro silver ragwort Senecio bicolor ssp. cineraria (DC.) Chater silver ragwort Senecio bolanderi Gray Bolander's ragwort Senecio bolanderi var. bolanderi Gray Bolander's ragwort Senecio bolanderi var. harfordii (Greenm.) T.M. Barkl. Harford's ragwort Senecio canus Hook. woolly groundsel Senecio crassulus Gray thickleaf groundsel Senecio cymbalarioides Buek cleftleaf groundsel Senecio dimorphophyllus Greene splitleaf groundsel Senecio ertterae T.M. Barkl. Ertter's ragwort Senecio eurycephalus Torr. & Gray ex Gray widehead groundsel Senecio eurycephalus var. eurycephalus Torr. & Gray ex Gray Siskiyou ragwort Senecio flettii Wieg. Flett's ragwort Senecio fremontii Torr. & Gray Fremont's groundsel Senecio fremontii var. fremontii Torr. & Gray Fremont's groundsel Senecio hesperius Greene western ragwort Senecio hydrophiloides Rydb. tall groundwel Senecio hydrophilus Nutt. water groundsel Senecio indecorus Greene elegant groundsel Senecio integerrimus Nutt. lambstongue groundsel Senecio integerrimus var. exaltatus (Nutt.) Cronq. Columbia groundsel Senecio integerrimus var. ochroleucus (Gray) Cronq. paleyellow groundsel Senecio jacobaea L. stinking willie Senecio macounii Greene Siskiyou Mountain ragwort Senecio multilobatus Torr. & Gray ex Gray lobeleaf groundsel Senecio pauciflorus Pursh alpine groundsel Senecio pauperculus Michx. balsam groundsel Senecio pseudaureus Rydb. falsegold groundsel Senecio pseudaureus var. pseudaureus Rydb. falsegold groundsel Senecio serra Hook. butterweed groundsel Senecio serra var. serra Hook. tall ragwort Senecio sphaerocephalus Greene ballhead groundsel Senecio streptanthifolius Greene cleftleaf groundsel Senecio streptanthifolius var. oodes (Rydb.) J.F. Bain Rocky Mountain groundsel Senecio streptanthifolius var. streptanthifolius Greene cleftleaf groundsel Senecio sylvaticus L. woodland ragwort Senecio triangularis Hook. arrowleaf groundsel Senecio vulgaris L. common groundsel Sericocarpus oregonensis Nutt. Sericocarpus oregonensis var. oregonensis Nutt. Sericocarpus rigidus Lindl. Silybum marianum (L.) Gaertn. blessed milkthistle Solidago californica Nutt. California goldenrod Solidago canadensis L. Canada goldenrod Solidago canadensis var. salebrosa (Piper) M.E. Jones salebrosa goldenrod Solidago gigantea Ait. giant goldenrod Solidago missouriensis Nutt. Missouri goldenrod Solidago missouriensis var. missouriensis Nutt. Missouri goldenrod Solidago missouriensis var. tolmieana (Gray) Cronq. Tolmies' goldenrod Solidago multiradiata Ait. mountain goldenrod Solidago simplex Kunth Mt. Albert goldenrod Solidago simplex ssp. simplex Kunth Mt. Albert goldenrod Solidago simplex ssp. simplex var. nana (Gray) Ringius dwarf goldenrod Solidago simplex ssp. simplex var. simplex Kunth Mt. Albert goldenrod Solidago simplex ssp. simplex var. spathulata Solidago spathulata var. spathulata DC. coastaldune goldenrod Solidago spectabilis (D.C. Eat.) Gray Nevada goldenrod Soliva Ruiz & Pavon soliva Soliva sessilis Ruiz & Pavon field soliva Sonchus arvensis L. field sowthistle Sonchus arvensis ssp. arvensis L. field sowthistle Sonchus arvensis ssp. uliginosus (Bieb.) Nyman moist sowthistle Sonchus asper (L.) Hill spiny sowthistle Sonchus oleraceus L. common sowthistle Sphaeromeria cana (D.C. Eat.) Heller rod tansy Sphaeromeria potentilloides (Gray) Heller powerful tansy Sphaeromeria potentilloides var. potentilloides (Gray) Heller fivefinger chickensage Stenotus acaulis (Nutt.) Nutt. stemless mock goldenweed Stenotus acaulis var. acaulis (Nutt.) Nutt. stemless goldenweed Stenotus lanuginosus (Gray) Greene woolly mock goldenweed Stenotus lanuginosus var. lanuginosus (Gray) Greene cespitose goldenweed Stenotus stenophyllus (Gray) Greene narrowleaf goldenweed Stephanomeria elata Nutt. Santa Barbara wirelettuce Stephanomeria exigua Nutt. small wirelettuce Stephanomeria exigua ssp. coronaria (Greene) Gottlieb whiteplume wirelettuce Stephanomeria lactucina Gray lettuce wirelettuce Stephanomeria malheurensis Gottlieb Malheur wirelettuce Stephanomeria paniculata Nutt. tufted wirelettuce Stephanomeria spinosa (Nutt.) S. Tomb thorn skeletonweed Stephanomeria tenuifolia (Raf.) Hall narrowleaf wirelettuce Stephanomeria tenuifolia var. myrioclada (D.C. Eat.) Cronq. narrowleaf wirelettuce Stephanomeria tenuifolia var. tenuifolia (Raf.) Hall narrowleaf wirelettuce Stephanomeria virgata Benth. rod wirelettuce Stephanomeria virgata ssp. pleurocarpa (Greene) Gottlieb wand wirelettuce Stylocline psilocarphoides M.E. Peck baretwig stylocline Tanacetum balsamita L. = Balsamita major Tanacetum camphoratum Less. camphor tansy Tanacetum parthenium (L.) Schultz-Bip. feverfew Tanacetum vulgare L. common tansy Taraxacum laevigatum (Willd.) DC. rock dandelion Taraxacum officinale G.H. Weber ex Wiggers common dandelion Taraxacum officinale ssp. ceratophorum (Ledeb.) Schinz ex Thellung fleshy dandelion Taraxacum officinale ssp. officinale G.H. Weber ex Wiggers wandering dandelion Tetradymia axillaris A. Nels. longspine horsebrush Tetradymia canescens DC. spineless horsebrush Tetradymia glabrata Torr. & Gray littleleaf horsebrush Tetradymia spinosa Hook. & Arn. shortspine horsebrush Tonestus lyallii (Gray) A. Nels. Lyall's goldenweed Townsendia alpigena Piper Wyoming townsendia Townsendia alpigena var. alpigena Piper mountain townsendia Townsendia florifer (Hook.) Gray showy townsendia Townsendia parryi D.C. Eat. Parry's townsend daisy Townsendia scapigera D.C. Eat. tufted townsend daisy Tragopogon dubius Scop. yellow salsify Tragopogon porrifolius L. salsify Tragopogon pratensis L. meadow salsify Trimorpha acris (L.) Nesom bitter boreal daisy Trimorpha lonchophylla var. lonchophylla (Hook.) Nesom spearleaf fleabane Tripleurospermum maritima (L.) W.D.J. Koch Tripleurospermum maritima ssp. maritima (L.) W.D.J. Koch Uropappus linearifolius Nutt. Wyethia X cusickii Piper (pro sp.) Cusick's mulesears Wyethia amplexicaulis (Nutt.) Nutt. mulesears wyethia Wyethia angustifolia (DC.) Nutt. California compassplant Wyethia helianthoides Nutt. sunflower wyethia Wyethia mollis Gray woolly wyethia Xanthium spinosum L. spiny cockleburr Xanthium strumarium L. rough cockleburr Xanthium strumarium var. canadense (P. Mill.) Torr. & Gray Canada cockleburr Xanthium strumarium var. glabratum (DC.) Cronq. rough cockleburr Xanthium strumarium var. strumarium L. rough cockleburr CONVOLVULACEAE Calystegia atriplicifolia Hallier f. nightblooming false bindweed Calystegia atriplicifolia ssp. atriplicifolia Hallier f. nightblooming false bindweed Calystegia occidentalis (Gray) Brummitt chaparral false bindweed Calystegia occidentalis ssp. occidentalis (Gray) Brummitt chaparral false bindweed Calystegia occidentalis ssp. occidentalis var. occidentalis (Gray) Brummitt chaparral false bindweed Calystegia sepium (L.) R. Br. hedge false bindweed Calystegia sepium ssp. sepium (L.) R. Br. hedge false bindweed Calystegia soldanella (L.) R. Br. ex Roemer & J.A. Schultes seashore false bindweed Convolvulus arvensis L. field bindweed Cressa truxillensis Kunth spreading alkaliweed Cuscuta approximata Bab. alfalfa dodder Cuscuta approximata var. urceolata (Kunze) Yuncker alfalfa dodder Cuscuta californica Hook. & Arn. chaparral dodder Cuscuta californica var. breviflora Engelm. California dodder Cuscuta californica var. californica Hook. & Arn. California dodder Cuscuta ceanothi Behr canyon dodder Cuscuta cephalanthi Engelm. buttonbush dodder Cuscuta epithymum L. clover dodder Cuscuta gronovii Willd. ex J.A. Schultes scaldweed Cuscuta pentagona Engelm. fiveangled dodder Cuscuta pentagona var. pentagona Engelm. fiveangled dodder Cuscuta salina Engelm. saltmarsh dodder Cuscuta salina var. major Yuncker goldenthread Cuscuta suksdorfii Yuncker mountain dodder Cuscuta suksdorfii var. suksdorfii Yuncker Suksdorf's dodder Dichondra occidentalis House western ponysfoot CORNACEAE Cornus alba var. californica (C.A. Mey.) Boivin = Cornus sericea ssp. occidentalis Cornus canadensis L. bunchberry dogwood Cornus glabrata Benth. brown dogwood Cornus nuttallii Audubon ex Torr. & Gray Pacific dogwood Cornus sericea L. redosier dogwood Cornus sericea ssp. occidentalis (Torr. & Gray) Fosberg western dogwood Cornus stolonifera var. occidentalis (Torr. & Gray) C.L. Hitchc. = Cornus sericea ssp. occidentalis CRASSULACEAE Crassula aquatica (L.) Schoenl. water pygmyweed Crassula connata (Ruiz & Pavon) Berger sand pygmyweed Crassula connata var. connata (Ruiz & Pavon) Berger sand pygmyweed Crassula connata var. subsimplex (S. Wats.) Bywater & Wickens sand pygmyweed Crassula saginoides (Maxim.) Bywater & Wickens wrinkleseed pygmyweed Crassula solierii (Gray) Meigen smoothseed pygmyweed Dudleya farinosa (Lindl.) Britt. & Rose powdery liveforever Rhodiola = Sedum Sedum acre L. goldmoss stonecrop Sedum borschii (Clausen) Clausen Leiberg stonecrop Sedum debile S. Wats. orpine stonecrop Sedum divergens S. Wats. Pacific stonecrop Sedum integrifolium (Raf.) A. Nels. ledge stonecrop Sedum integrifolium ssp. integrifolium (Raf.) A. Nels. entireleaf stonecrop Sedum lanceolatum Torr. spearleaf stonecrop Sedum lanceolatum ssp. lanceolatum Torr. spearleaf stonecrop Sedum laxum (Britt.) Berger roseflower stonecrop Sedum laxum ssp. heckneri (M.E. Peck) Clausen Heckner's stonecrop Sedum laxum ssp. laxum (Britt.) Berger roseflower stonecrop Sedum moranii Clausen Rogue River stonecrop Sedum oblanceolatum Clausen oblongleaf stonecrop Sedum obtusatum Gray Sierran stonecrop Sedum obtusatum ssp. retusum (Rose) Clausen Sierran stonecrop Sedum oreganum Nutt. kings crown Sedum oreganum ssp. oreganum Nutt. Oregon stonecrop Sedum oreganum ssp. tenue Clausen Oregon stonecrop Sedum oregonense (S. Wats.) M.E. Peck cream stonecrop Sedum radiatum S. Wats. Coast Range stonecrop Sedum radiatum ssp. ciliosum (T.J. Howell) Clausen Coast Range stonecrop Sedum radiatum ssp. depauperatum Clausen Coast Range stonecrop Sedum radiatum ssp. radiatum S. Wats. Coast Range stonecrop Sedum rosea (L.) Scop. roseroot stonecrop Sedum spathulifolium Hook. broadleaf stonecrop Sedum spathulifolium ssp. pruinosum (Britt.) Clausen & Uhl broadleaf stonecrop Sedum spathulifolium ssp. purdyi (Jepson) Clausen Purdy's stonecrop Sedum spathulifolium ssp. spathulifolium Hook. broadleaf stonecrop Sedum stenopetalum Pursh wormleaf stonecrop Sedum stenopetalum ssp. monanthum (Suksdorf) Clausen wormleaf stonecrop Sedum stenopetalum ssp. stenopetalum Pursh wormleaf stonecrop Tillaea = Crassula CROSSOSOMATACEAE Glossopetalon spinescens Gray spiny greasebush Glossopetalon spinescens var. aridum M.E. Jones spiny greasebush CRUCIFERAE Alliaria petiolata (Bieb.) Cavara & Grande garlic mustard Alyssum alyssoides (L.) L. pale madwort Alyssum desertorum Stapf desert madwort Arabidopsis thaliana (L.) Heynh. mouseear cress Arabis X divaricarpa A. Nels. (pro sp.) spreadingpod rockcress Arabis aculeolata Greene Waldo rockcress Arabis breweri S. Wats. Brewer's rockcress Arabis cobrensis M.E. Jones sagebrush rockcress Arabis crucisetosa Constance & Rollins wetsoil rockcress Arabis cusickii S. Wats. Cusick's rockcress Arabis davidsonii Greene Davidson's rockcress Arabis drummondii Gray Drummond's rockcress Arabis furcata S. Wats. Columbia Gorge rockcress Arabis furcata var. furcata S. Wats. Columbia Gorge rockcress Arabis glabra (L.) Bernh. tower rockcress Arabis glabra var. glabra (L.) Bernh. tower rockcress Arabis hirsuta (L.) Scop. hairy rockcress Arabis hirsuta var. eschscholtziana (Andrz.) Rollins Eschscholtz's hairy rockcress Arabis hirsuta var. glabrata Torr. & Gray mountain rockcress Arabis holboellii Hornem. Holboell's rockcress Arabis holboellii var. pendulocarpa (A. Nels.) Rollins dropseed rockcress Arabis holboellii var. pinetorum (Tidestrom) Rollins Holboell's rockcress Arabis holboellii var. retrofracta (Graham) Rydb. second rockcress Arabis koehleri T.J. Howell Koehler's rockcress Arabis koehleri var. koehleri T.J. Howell Koehler's rockcress Arabis koehleri var. stipitata Rollins Koehler's rockcress Arabis lemmonii S. Wats. Lemmon's rockcress Arabis lemmonii var. lemmonii S. Wats. Lemmon's rockcress Arabis lyallii S. Wats. Lyall's rockcress Arabis macdonaldiana Eastw. MacDonald rockcress Arabis microphylla Nutt. littleleaf rockcress Arabis microphylla var. microphylla Nutt. smallleaf rockcress Arabis modesta Rollins Rouge Canyon rockcress Arabis nuttallii B.L. Robins. Nuttall's rockcress Arabis oregana Rollins Oregon rockcress Arabis platysperma Gray pioneer rockcress Arabis platysperma var. howellii (S. Wats.) Jepson Howell's pioneer rockcress Arabis puberula Nutt. silver rockcress Arabis rectissima Greene bristlyleaf rockcress Arabis sparsiflora Nutt. sicklepod rockcress Arabis sparsiflora var. atrorubens (Suksdorf ex Greene) Rollins elegant rockcress Arabis sparsiflora var. sparsiflora Nutt. sicklepod rockcress Arabis sparsiflora var. subvillosa (S. Wats.) Rollins hairystem rockcress Arabis subpinnatifida S. Wats. Klamath rockcress Arabis suffrutescens S. Wats. woody rockcress Arabis suffrutescens var. horizontalis (Greene) Rollins horizontal woody rockcress Arabis suffrutescens var. suffrutescens S. Wats. woody rockcress Armoracia armoracia (L.) Britt. = Armoracia rusticana Armoracia rusticana P.G. Gaertn., B. Mey. & Scherb. horseradish Athysanus pusillus (Hook.) Greene common sandweed Barbarea orthoceras Ledeb. American yellowrocket Barbarea verna (P. Mill.) Aschers. early yellowrocket Barbarea vulgaris Ait. f. garden yellowrocket Brassica alba Rabenh., non L. = Sinapis alba Brassica arvensis (L.) Rabenh. = Sinapis arvensis Brassica campestris L. = Brassica rapa var. rapa Brassica elongata Ehrh. elongated mustard Brassica juncea (L.) Czern. India mustard Brassica nigra (L.) W.D.J. Koch black mustard Brassica rapa L. rape mustard Brassica rapa var. rapa L. birdrape Cakile edentula (Bigelow) Hook. American searocket Cakile edentula ssp. edentula (Bigelow) Hook. American searocket Cakile maritima Scop. European searocket Camelina microcarpa DC. littlepod falseflax Camelina rumelica Velen. graceful falseflax Camelina sativa (L.) Crantz gold-of-pleasure Capsella bursa-pastoris (L.) Medik. shepherd's purse Cardamine angulata Hook. seaside bittercress Cardamine bellidifolia L. alpine bittercress Cardamine bellidifolia var. pachyphylla Coville & Leib. alpine bittercress Cardamine breweri S. Wats. Brewer's bittercress Cardamine breweri var. breweri S. Wats. Brewer's bittercress Cardamine breweri var. orbicularis (Greene) Detling Sierran bittercress Cardamine californica (Nutt.) Greene milkmaids Cardamine californica var. californica (Nutt.) Greene milkmaids Cardamine californica var. sinuata (Greene) O.E. Schulz milkmaids Cardamine cordifolia Gray heartleaf bittercress Cardamine cordifolia var. lyallii (S. Wats.) A. Nels. & J.F. Macbr. Cardamine nuttallii Greene Nuttall's toothwort Cardamine nuttallii var. gemmata (Greene) Rollins Cardamine nuttallii var. nuttallii Greene palmate toothwort Cardamine occidentalis (S. Wats. ex B.L. Robins.) T.J. Howell big western bittercress Cardamine oligosperma Nutt. Idaho bittercress Cardamine oligosperma var. kamtschatica (Regel) Detling umbel bittercress Cardamine oligosperma var. oligosperma Nutt. little western bittercress Cardamine parviflora L. sand bittercress Cardamine parviflora var. arenicola (Britt.) O.E. Schulz sand bittercress Cardamine pattersonii Henderson Saddle Mountain bittercress Cardamine penduliflora O.E. Schulz Willamette Valley bittercress Cardamine pensylvanica Muhl. ex Willd. Pennsylvania bittercress Cardaria draba (L.) Desv. pepperweed whitetop Cardaria pubescens (C.A. Mey.) Jarmolenko hairy whitetop Caulanthus crassicaulis (Torr.) S. Wats. thickstem wild cabbage Caulanthus crassicaulis var. crassicaulis (Torr.) S. Wats. thickstem wild cabbage Caulanthus glaucus S. Wats. glaucous wild cabbage Caulanthus lasiophyllus var. lasiophyllus (Hook. & Arn.) Payson coast range wild cabbage Caulanthus pilosus S. Wats. hairy wild cabbage Chlorocrambe hastata (S. Wats.) Rydb. spearhead Chorispora tenella (Pallas) DC. crossflower Cochlearia armoracia L. = Armoracia rusticana Cochlearia groenlandica L. Danish scurvygrass Conringia orientalis (L.) Dumort. hare's ear mustard Coronopus didymus (L.) Sm. lesser swinecress Coronopus squamatus (Forsk.) Aschers. greater swinecress Crambe maritima L. sea kale Cusickiella Rollins false whitlowgrass Cusickiella douglasii (Gray) Rollins alkali false whitlowgrass Descurainia californica (Gray) O.E. Schulz Sierran tansymustard Descurainia incana (Bernh. ex Fisch. & C.A. Mey.) Dorn mountain tansymustard Descurainia incana ssp. incisa (Engelm.) Kartesz & Gandhi mountain tansymustard Descurainia incana ssp. viscosa (Rydb.) Kartesz & Gandhi mountain tansymustard Descurainia paradisa (A. Nels. & Kennedy) O.E. Schulz paradise tansymustard Descurainia pinnata (Walt.) Britt. western tansymustard Descurainia pinnata ssp. filipes (Gray) Detling western tansymustard Descurainia pinnata ssp. halictorum (Cockerell) Detling western tansymustard Descurainia pinnata ssp. nelsonii (Rydb.) Detling Nelson's tansymustard Diplotaxis muralis (L.) DC. annual wallrocket Draba albertina Greene slender whitlowgrass Draba aureola S. Wats. Mt. Lassen whitlowgrass Draba brachycarpa Nutt. ex Torr. & Gray shortpod whitlowgrass Draba crassifolia Graham snowbed whitlowgrass Draba crassifolia var. crassifolia Graham snowbed whitlowgrass Draba cuneifolia Nutt. ex Torr. & Gray wedgeleaf whitlowgrass Draba cusickii B.L. Robins. ex O.E. Schulz Cusick's whitlowgrass Draba densifolia Nutt. denseleaf whitlowgrass Draba howellii S. Wats. rosette whitlowgrass Draba incerta Payson Yellowstone whitlowgrass Draba lemmonii S. Wats. granite whitlowgrass Draba lemmonii var. cyclomorpha (Payson) O.E. Schulz granite whitlowgrass Draba lonchocarpa Rydb. lancepod whitlowgrass Draba lonchocarpa var. lonchocarpa Rydb. lancepod whitlowgrass Draba nemorosa L. woodland whitlowgrass Draba oligosperma Hook. fewseed whitlowgrass Draba paysonii J.F. Macbr. Payson's whitlowgrass Draba paysonii var. treleasii (O.E. Schulz) C.L. Hitchc. Trelease's whitlowgrass Draba platycarpa Torr. & Gray broadpod whitlowgrass Draba praealta Greene tall whitlowgrass Draba reptans (Lam.) Fern. Carolina whitlowgrass Draba verna L. spring whitlowgrass Erucastrum gallicum (Willd.) O.E. Schulz common dogmustard Erysimum arenicola S. Wats. cascade wallflower Erysimum arenicola var. torulosum (Piper) C.L. Hitchc. cascade wallflower Erysimum capitatum (Dougl. ex Hook.) Greene sanddune wallflower Erysimum capitatum var. capitatum (Dougl. ex Hook.) Greene sanddune wallflower Erysimum cheiranthoides L. wormseed wallflower Erysimum franciscanum G. Rossb. San Francisco wallflower Erysimum franciscanum var. franciscanum G. Rossb. San Francisco wallflower Erysimum inconspicuum (S. Wats.) MacM. shy wallflower Erysimum inconspicuum var. inconspicuum (S. Wats.) MacM. shy wallflower Erysimum menziesii (Hook.) Wettst. Menzies' wallflower Erysimum menziesii ssp. concinnum (Eastw.) Price Erysimum occidentale (S. Wats.) B.L. Robins. pale wallflower Erysimum repandum L. spreading wallflower Guillenia lasiophylla (Hook. & Arn.) Greene Hesperis matronalis L. dames rocket Heterodraba unilateralis (M.E. Jones) Greene ladiestongue mustard Hirschfeldia incana (L.) Lagreze-Fossat shortpod mustard Hutchinsia procumbens (L.) Desv. prostrate hutchinsia Iberis amara L. annual candytuft Idahoa scapigera (Hook.) A. Nels. & J.F. Macbr. oldstem idahoa Ionopsidium acaule (Desf.) Reichenb. false diamondflower Lepidium bourgeauanum Thellung Bourgeau's pepperweed Lepidium campestre (L.) Ait. f. field pepperweed Lepidium davisii Rollins Davis' pepperweed Lepidium densiflorum Schrad. common pepperweed Lepidium densiflorum var. densiflorum Schrad. common pepperweed Lepidium densiflorum var. elongatum (Rydb.) Thellung tall pepperweed Lepidium densiflorum var. macrocarpum Mulligan bigseed pepperweed Lepidium densiflorum var. pubecarpum (A. Nels.) Thellung babyseed pepperweed Lepidium dictyotum Gray net pepperweed Lepidium dictyotum var. acutidens Gray alkali pepperwort Lepidium dictyotum var. dictyotum Gray alkali pepperweed Lepidium graminifolium L. grassleaf pepperweed Lepidium latifolium L. broadleaved pepperweed Lepidium montanum Nutt. mountain pepperweed Lepidium montanum var. canescens (Thellung) C.L. Hitchc. mountain pepperweed Lepidium montanum var. montanum Nutt. mountain pepperweed Lepidium nitidum Nutt. shining pepperweed Lepidium nitidum var. nitidum Nutt. shining pepperweed Lepidium oblongum Small veiny pepperweed Lepidium perfoliatum L. clasping pepperweed Lepidium ruderale L. roadside pepperweed Lepidium sativum L. gardencress pepperweed Lepidium strictum (S. Wats.) Rattan upright pepperweed Lepidium virginicum L. Virginia pepperweed Lepidium virginicum var. medium (Greene) C.L. Hitchc. medium pepperweed Lepidium virginicum var. pubescens (Greene) Thellung hairy pepperweed Lesquerella douglasii S. Wats. Douglas' bladderpod Lesquerella kingii S. Wats. King bladderpod Lesquerella kingii ssp. diversifolia (Greene) Rollins & Shaw Wallowa bladderpod Lesquerella occidentalis S. Wats. western bladderpod Lesquerella occidentalis ssp. occidentalis S. Wats. western bladderpod Lobularia maritima (L.) Desv. seaside lobularia Lunaria annua L. annual honesty Malcolmia africana (L.) Ait. f. African mustard Malcolmia maritima (L.) Ait. f. Virginia stock Nasturtium armoracia (L.) Fries = Armoracia rusticana Nasturtium nasturtium-aquaticum (L.) Karsten = Rorippa nasturtium-aquaticum Phoenicaulis cheiranthoides Nutt. wallflower phoenicaulis Physaria chambersii Rollins Chambers' twinpod Physaria didymocarpa (Hook.) Gray common twinpod Physaria didymocarpa var. didymocarpa (Hook.) Gray common twinpod Physaria oregona S. Wats. Oregon twinpod Polyctenium fremontii (S. Wats.) Greene Fremont's polyctenium Polyctenium fremontii var. bisulcatum (Greene) Rollins desert combleaf Polyctenium fremontii var. fremontii (S. Wats.) Greene Fremont's combleaf Radicula armoracia (L.) B.L. Robins. = Armoracia rusticana Raphanus raphanistrum L. wild radish Raphanus sativus L. wild radish Rorippa columbiae (Suksdorf ex B.L. Robins.) Suksdorf ex T.J. Howell Columbian yellowcress Rorippa curvipes Greene bluntleaf yellowcress Rorippa curvipes var. curvipes Greene bluntleaf yellowcress Rorippa curvipes var. truncata (Jepson) Rollins Rorippa curvisiliqua (Hook.) Bess. ex Britt. curvepod yellowcress Rorippa curvisiliqua var. curvisiliqua (Hook.) Bess. ex Britt. curvepod yellowcress Rorippa curvisiliqua var. lyrata (Nutt.) M.E. Peck ex C.L. Hitchc. lyrateleaf yellowcress Rorippa curvisiliqua var. nuttallii (S. Wats.) R. Stuckey Nuttall's yellowcress Rorippa curvisiliqua var. occidentalis (Greene) R. Stuckey western yellowcress Rorippa curvisiliqua var. orientalis R. Stuckey oriental yellowcress Rorippa curvisiliqua var. procumbens R. Stuckey curvepod yellowcress Rorippa curvisiliqua var. spatulata R. Stuckey curvepod yellowcress Rorippa indica (L.) Hiern variableleaf yellowcress Rorippa indica var. indica (L.) Hiern variableleaf yellowcress Rorippa nasturtium-aquaticum (L.) Hayek watercress Rorippa palustris (L.) Bess. bog yellowcress Rorippa palustris ssp. fernaldiana (Butters & Abbe) Jonsell Fernald's yellowcress Rorippa palustris ssp. hispida (Desv.) Jonsell hispid yellowcress Rorippa palustris ssp. occidentalis (S. Wats.) Abrams western bog yellowcress Rorippa sinuata (Nutt.) A.S. Hitchc. spreading yellowcress Rorippa sylvestris (L.) Bess. creeping yellowcress Rorippa tenerrima Greene Modoc yellowcress Rorippa teres (Michx.) R. Stuckey southern marsh yellowcress Schoenocrambe linifolia (Nutt.) Greene flaxleaf plainsmustard Sinapis alba L. white mustard Sinapis arvensis L. charlock mustard Sinapis nigra L. = Brassica nigra Sisymbrium altissimum L. tall tumblemustard Sisymbrium loeselii L. small tumbleweed mustard Sisymbrium nasturtium-aquaticum L. = Rorippa nasturtium-aquaticum Sisymbrium officinale (L.) Scop. hedgemustard Smelowskia calycina (Steph. ex Willd.) C.A. Mey. alpine smelowskia Smelowskia ovalis M.E. Jones alpine false candytuft Smelowskia ovalis var. ovalis M.E. Jones alpine false candytuft Stanleya confertiflora (B.L. Robins.) T.J. Howell Oregon princesplume Stanleya pinnata (Pursh) Britt. desert princesplume Stanleya pinnata var. pinnata (Pursh) Britt. pinnate princesplume Stanleya viridiflora Nutt. green princesplume Streptanthella longirostris (S. Wats.) Rydb. longbeak streptanthella Streptanthus cordatus Nutt. heartleaf twistflower Streptanthus glandulosus Hook. bristly jewelflower Streptanthus howellii S. Wats. Howell's jewelflower Streptanthus tortuosus Kellogg shieldplant Streptanthus tortuosus var. orbiculatus (Greene) Hall shieldplant Subularia aquatica L. waterawlwort Subularia aquatica var. americana (Mulligan & Calder) Boivin American waterawlwort Teesdalia nudicaulis (L.) Ait. f. barestem teesdalia Thelypodium brachycarpum Torr. shortpod thelypody Thelypodium eucosmum B.L. Robins. world thelypody Thelypodium flexuosum B.L. Robins. nodding thelypody Thelypodium howellii S. Wats. Howell's thelypody Thelypodium howellii ssp. howellii S. Wats. Howell's thelypody Thelypodium howellii ssp. spectabilis (M.E. Peck) Al-Shehbaz Howell's thelypody Thelypodium integrifolium (Nutt.) Endl. ex Walp. entireleaved thelypody Thelypodium integrifolium ssp. complanatum Al-Shehbaz entireleaved thelypody Thelypodium integrifolium ssp. integrifolium (Nutt.) Endl. ex Walp. entireleaved thelypody Thelypodium laciniatum (Hook.) Endl. ex Walp. cutleaf thelypody Thelypodium milleflorum A. Nels. manyflower thelypody Thelypodium sagittatum (Nutt. ex Torr. & Gray) Endl. ex Walp. arrow thelypody Thlaspi arvense L. field pennycress Thlaspi montanum L. alpine pennycress Thlaspi montanum var. montanum L. alpine pennycress Thlaspi montanum var. siskiyouense P. Holmgren Siskiyou pennycress Thysanocarpus curvipes Hook. sand fringepod Thysanocarpus radians Benth. ribbed fringepod CUCURBITACEAE Echinocystis lobata (Michx.) Torr. & Gray wild cucumber Marah oreganus (Torr. ex S. Wats.) T.J. Howell coastal manroot CUPRESSACEAE Calocedrus decurrens (Torr.) Florin incense cedar Chamaecyparis lawsoniana (A. Murr.) Parl. Port Orford cedar Chamaecyparis nootkatensis (D. Don) Spach Alaska cedar Cupressus bakeri Jepson Modoc cypress Juniperus communis L. common juniper Juniperus communis var. montana Ait. common juniper Juniperus occidentalis Hook. western juniper Juniperus occidentalis var. occidentalis Hook. western juniper Juniperus scopulorum Sarg. Rocky Mountain juniper Libocedrus decurrens Torr. = Calocedrus decurrens Thuja plicata Donn ex D. Don western redcedar DIPSACACEAE Dipsacus fullonum L. Fuller's teasel DROSERACEAE Drosera anglica Huds. English sundew Drosera rotundifolia L. roundleaf sundew DRYOPTERIDACEAE Athyrium alpestre (Hoppe) Milde = Athyrium americanum Athyrium americanum (Butters) Maxon alpine ladyfern Athyrium filix-femina (L.) Roth common ladyfern Athyrium filix-femina ssp. cyclosorum (Rupr.) C. Christens. subarctic ladyfern Cystopteris fragilis (L.) Bernh. brittle bladderfern Dryopteris arguta (Kaulfuss) Watt coastal woodfern Dryopteris campyloptera Clarkson mountain woodfern Dryopteris carthusiana (Vill.) H.P. Fuchs spinulose woodfern Dryopteris expansa (K. Presl) Fraser-Jenkins & Jermy spreading woodfern Dryopteris filix-mas (L.) Schott male fern Gymnocarpium disjunctum (Rupr.) Ching Pacific oakfern Polystichum andersonii Hopkins Anderson's hollyfern Polystichum californicum (D.C. Eat.) Diels California swordfern Polystichum imbricans (D.C. Eat.) D.H. Wagner narrowleaf swordfern Polystichum imbricans ssp. imbricans (D.C. Eat.) D.H. Wagner narrowleaf swordfern Polystichum kruckebergii W.H. Wagner Kruckeberg's hollyfern Polystichum lemmonii Underwood Lemmon's hollyfern Polystichum lonchitis (L.) Roth northern hollyfern Polystichum munitum (Kaulfuss) K. Presl western swordfern Polystichum scopulinum (D.C. Eat.) Maxon mountain hollyfern Woodsia oregana D.C. Eat. Oregon woodsia Woodsia oregana ssp. oregana D.C. Eat. Oregon cliff fern Woodsia scopulina D.C. Eat. Rocky Mountain woodsia ELAEAGNACEAE Elaeagnus angustifolia L. Russian olive Shepherdia argentea (Pursh) Nutt. silver buffaloberry Shepherdia canadensis (L.) Nutt. russet buffaloberry ELATINACEAE Bergia texana (Hook.) Seub. ex Walp. Texas bergia Elatine americana (Pursh) Arn. American waterwort Elatine brachysperma Gray shortseed waterwort Elatine californica Gray California waterwort Elatine triandra Schkuhr threestamen waterwort EMPETRACEAE Empetrum nigrum L. black crowberry Empetrum nigrum ssp. hermaphroditum (Lange ex Hagerup) Bocher black crowberry EPHEDRACEAE Ephedra nevadensis S. Wats. Nevada jointfir Ephedra nevadensis var. nevadensis S. Wats. Nevada jointfir Ephedra viridis Coville mormon tea Ephedra viridis var. viridis Coville mormon tea EQUISETACEAE Equisetum X ferrissii Clute (pro sp.) Ferriss' horsetail Equisetum X mackaii (Newm.) Brichan MacKai's horsetail Equisetum arvense L. field horsetail Equisetum fluviatile L. water horsetail Equisetum hyemale L. scouringrush horsetail Equisetum hyemale var. affine (Engelm.) A.A. Eat. scouringrush horsetail Equisetum palustre L. marsh horsetail Equisetum telmateia Ehrh. giant horsetail Equisetum telmateia var. braunii (Milde) Milde giant horsetail Equisetum variegatum Schleich. ex F. Weber & D.M.H. Mohr variegated scouringrush Equisetum variegatum var. variegatum Schleich. ex F. Weber & D.M.H. Mohr variegated scouringrush ERICACEAE Arbutus menziesii Pursh Pacific madrone Arctostaphylos X cinerea T.J. Howell (pro sp.) Del Norte manzanita Arctostaphylos X parvifolia T.J. Howell (pro sp.) gravel manzanita Arctostaphylos canescens Eastw. hoary manzanita Arctostaphylos canescens ssp. canescens Eastw. hoary manzanita Arctostaphylos columbiana Piper hairy manzanita Arctostaphylos glandulosa Eastw. Eastwood's manzanita Arctostaphylos glandulosa ssp. glandulosa Eastw. black manzanita Arctostaphylos hispidula T.J. Howell Gasquet manzanita Arctostaphylos nevadensis Gray pinemat manzanita Arctostaphylos nevadensis ssp. nevadensis Gray pinemat manzanita Arctostaphylos patula Greene greenleaf manzanita Arctostaphylos pungens ssp. hispidula (T.J. Howell) J.B. Roof = Arctostaphylos hispidula Arctostaphylos pungens ssp. nevadensis (Gray) J.B. Roof = Arctostaphylos nevadensis Arctostaphylos uva-ursi (L.) Spreng. kinnikinnick Arctostaphylos viscida Parry sticky whiteleaf manzanita Arctostaphylos viscida ssp. pulchella (T.J. Howell) P.V. Wells whiteleaf manzanita Arctostaphylos viscida ssp. viscida Parry sticky whiteleaf manzanita Cassiope mertensiana (Bong.) D. Don western moss heather Cassiope mertensiana var. gracilis (Piper) C.L. Hitchc. western moss heather Cassiope mertensiana var. mertensiana (Bong.) D. Don western moss heather Chimaphila menziesii (R. Br. ex D. Don) Spreng. little prince's pine Chimaphila umbellata (L.) W. Bart. pipsissewa Chimaphila umbellata ssp. occidentalis (Rydb.) Hulten pipsissewa Elliottia pyroliflorus (Bong.) S.W. Brim & P.F. Stevens copperbush Gaultheria humifusa (Graham) Rydb. alpine spicywintergreen Gaultheria ovatifolia Gray western teaberry Gaultheria shallon Pursh salal Kalmia microphylla (Hook.) Heller alpine laurel Kalmia polifolia Wangenh. bog laurel Kalmia polifolia ssp. microphylla (Hook.) Calder & Taylor = Kalmia microphylla Kalmiopsis leachiana (Henderson) Rehd. North Umpqua kalmiopsis Ledum X columbianum Piper (pro sp.) coast Labradortea Ledum glandulosum Nutt. Western Labradortea Ledum groenlandicum Oeder bog Labradortea Ledum palustre ssp. groenlandicum (Oeder) Hulten = Ledum groenlandicum Ledum palustre var. latifolium (Jacq.) Michx. = Ledum groenlandicum Leucothoe davisiae Torr. ex Gray Sierra laurel Menziesia ferruginea Sm. rusty menziesia Moneses uniflora (L.) Gray single delight Moneses uniflora ssp. reticulata (Nutt.) Calder & Taylor single delight Orthilia secunda (L.) House sidebells wintergreen Oxycoccus = Vaccinium oxycoccos Phyllodoce X intermedia (Hook.) Rydb. (pro sp.) hybrid mountainheath Phyllodoce empetriformis (Sm.) D. Don pink mountainheath Phyllodoce glanduliflora (Hook.) Coville yellow mountainheath Pyrola asarifolia Michx. liverleaf wintergreen Pyrola asarifolia ssp. asarifolia Michx. liverleaf wintergreen Pyrola asarifolia ssp. bracteata (Hook.) Haber pink wintergreen Pyrola chlorantha Sw. greenflowered wintergreen Pyrola minor L. snowline wintergreen Pyrola pallida Greene = Pyrola picta Pyrola picta Sm. whiteveined wintergreen Pyrola rotundifolia ssp. asarifolia (Michx.) A.& D. Love = Pyrola asarifolia ssp. asarifolia Pyrola secunda L. = Orthilia secunda Pyrola septentrionalis Andres = Pyrola picta Rhododendron albiflorum Hook. Cascade azalea Rhododendron macrophyllum D. Don ex G. Don Pacific rhododendron Rhododendron occidentale (Torr. & Gray ex Torr.) Gray western azalea Rhododendron occidentale var. occidentale (Torr. & Gray ex Torr.) Gray western azalea Vaccinium X nubigenum Fern. (pro sp.) vaccinium Vaccinium cespitosum Michx. dwarf blueberry Vaccinium deliciosum Piper blueleaved huckleberry Vaccinium membranaceum Dougl. ex Torr. blue huckleberry Vaccinium ovalifolium Sm. ovalleaf blueberry Vaccinium ovatum Pursh evergreen huckleberry Vaccinium ovatum var. ovatum Pursh evergreen huckleberry Vaccinium oxycoccos L. small cranberry Vaccinium parvifolium Sm. red huckleberry Vaccinium scoparium Leib. ex Coville grouse whortleberry Vaccinium uliginosum L. bog blueberry EUPHORBIACEAE Chamaesyce glyptosperma (Engelm.) Small ribseed sandmat Chamaesyce maculata (L.) Small spotted sandmat Chamaesyce serpyllifolia (Pers.) Small thymeleaf sandmat Chamaesyce serpyllifolia ssp. serpyllifolia (Pers.) Small thymeleaf sandmat Croton setigerus Hook. turkey mullein Eremocarpus setigerus (Hook.) Benth. = Croton setigerus Euphorbia crenulata Engelm. Chinese caps Euphorbia cyparissias L. cypress spurge Euphorbia esula L. wolf's milk Euphorbia helioscopia L. madwoman's milk Euphorbia lathyris L. moleplant Euphorbia maculata L. = Chamaesyce maculata Euphorbia peplus L. petty spurge Euphorbia serpyllifolia Pers. = Chamaesyce serpyllifolia ssp. serpyllifolia Euphorbia spathulata Lam. warty spurge Euphorbia supina Raf. = Chamaesyce maculata FAGACEAE Chrysolepis Hjelmquist Chrysolepis chrysophylla (Dougl. ex Hook.) Hjelmqvist Chrysolepis chrysophylla var. chrysophylla (Dougl. ex Hook.) Hjelmqvist Chrysolepis sempervirens (Kellogg) Hjelmqvist Lithocarpus densiflorus (Hook. & Arn.) Rehd. tanoak Lithocarpus densiflorus var. densiflorus (Hook. & Arn.) Rehd. tanoak Lithocarpus densiflorus var. echinoides (R. Br.) Abrams tanoak Quercus X moreha Kellogg (pro sp.) oracle oak Quercus chrysolepis Liebm. canyon live oak Quercus chrysolepis var. chrysolepis Liebm. canyon live oak Quercus garryana Dougl. ex Hook. Oregon white oak Quercus garryana var. breweri (Engelm.) Jepson Brewer's oak Quercus garryana var. garryana Dougl. ex Hook. Oregon white oak Quercus kelloggii Newberry California black oak Quercus sadleriana R. Br. Campst. deer oak Quercus vacciniifolia Kellogg huckleberry oak FRANKENIACEAE Frankenia pulverulenta L. European seaheath FUMARIACEAE Corydalis aquae-gelidae M.E. Peck & Wilson coldwater fumewort Corydalis aurea Willd. scrambledeggs Corydalis aurea ssp. occidentalis (Engelm. ex Gray) G.B. Ownbey scrambledeggs Corydalis caseana Gray Sierran fumewort Corydalis caseana ssp. cusickii (S. Wats.) G.B. Ownbey Cusick's fumewort Corydalis lutea (L.) DC. = Pseudofumaria lutea Corydalis scouleri Hook. Scouler's fumewort Dicentra cucullaria (L.) Bernh. dutchman's breeches Dicentra formosa (Haw.) Walp. Pacific bleedinghearts Dicentra formosa ssp. formosa (Haw.) Walp. Pacific bleedinghearts Dicentra formosa ssp. oregona (Eastw.) Munz Oregon bleedinghearts Dicentra pauciflora S. Wats. shorthorn steershead Dicentra uniflora Kellogg longhorn steershead Fumaria officinalis L. drug fumitory Pseudofumaria Medik. pseudofumaria Pseudofumaria lutea (L.) Borkh. rock fumewort GARRYACEAE Garrya buxifolia Gray dwarf silktassel Garrya elliptica Dougl. ex Lindl. wavyleaf silktassel Garrya fremontii Torr. bearbrush GENTIANACEAE Centaurium erythraea Rafn European centaury Centaurium exaltatum (Griseb.) W. Wight ex Piper desert centaury Centaurium muehlenbergii (Griseb.) W. Wight ex Piper Muhlenberg's centaury Cicendia quadrangularis (Lam.) Griseb. Oregon timwort Erythraea centaurium of authors = Centaurium erythraea Frasera albicaulis Dougl. ex Griseb. whitestem elkweed Frasera albicaulis var. albicaulis Dougl. ex Griseb. whitestem elkweed Frasera albicaulis var. columbiana (St. John) C.L. Hitchc. whitestem elkweed Frasera albicaulis var. cusickii (Gray) C.L. Hitchc. Cusick's elkweed Frasera albicaulis var. idahoensis (St. John) C.L. Hitchc. Idaho elkweed Frasera albicaulis var. modocensis (St. John) N. Holmgren Modoc elkweed Frasera albicaulis var. nitida (Benth.) C.L. Hitchc. whitestem elkweed Frasera fastigiata (Pursh) Heller clustered elkweed Frasera speciosa Dougl. ex Griseb. showy frasera Gentiana affinis Griseb. pleated gentian Gentiana amarella L. auct. p.p. = Gentianella amarella ssp. acuta Gentiana calycosa Griseb. Rainier pleated gentian Gentiana holopetala (Gray) Holm = Gentianopsis holopetala Gentiana newberryi Gray alpine gentian Gentiana newberryi var. newberryi Gray Newberry's alpine gentian Gentiana plurisetosa C.T. Mason bristly gentian Gentiana prostrata Haenke pygmy gentian Gentiana rusbyi Greene = Gentiana affinis Gentiana sceptrum Griseb. king's scepter gentian Gentiana setigera Gray Mendocino gentian Gentiana simplex Gray = Gentianopsis simplex Gentiana tenella Rottb. = Gentianella tenella ssp. tenella Gentianella amarella (L.) Boerner autumn dwarfgentian Gentianella amarella ssp. acuta (Michx.) J. Gillett autumn dwarfgentian Gentianella propinqua (Richards.) J. Gillett fourpart dwarfgentian Gentianella tenella (Rottb.) Boerner Dane's dwarfgentian Gentianella tenella ssp. tenella (Rottb.) Boerner Dane's dwarfgentian Gentianopsis holopetala (Gray) Iltis Sierran fringedgentian Gentianopsis simplex (Gray) Iltis oneflower fringedgentian Swertia albicaulis (Dougl. ex Griseb.) Kuntze = Frasera albicaulis var. albicaulis Swertia radiata (Kellogg) Kuntze = Frasera speciosa GERANIACEAE Erodium botrys (Cav.) Bertol. longbeak stork's bill Erodium cicutarium (L.) L'Her. ex Ait. redstem stork's bill Erodium cicutarium ssp. cicutarium (L.) L'Her. ex Ait. redstem stork's bill Erodium cicutarium ssp. jacquinianum (Fisch., C.A. Mey. & Ave-Lall.) Briq. redstem stork's bill Erodium macrophyllum Hook. & Arn. roundleaf stork's bill Erodium macrophyllum var. macrophyllum Hook. & Arn. roundleaf stork's bill Erodium moschatum (L.) L'Her. ex Ait. musky stork's bill Geranium bicknellii Britt. Bicknell's cranesbill Geranium bicknellii var. longipes (S. Wats.) Fern. northern cranesbill Geranium carolinianum L. Carolina geranium Geranium carolinianum var. carolinianum L. Carolina geranium Geranium columbinum L. longstalk cranesbill Geranium dissectum L. cutleaf geranium Geranium lucidum L. shining geranium Geranium molle L. dovefoot geranium Geranium oreganum T.J. Howell Oregon geranium Geranium pusillum L. small geranium Geranium richardsonii Fisch. & Trautv. Richardson's geranium Geranium robertianum L. Robert geranium Geranium viscosissimum Fisch. & C.A. Mey. ex C.A. Mey. sticky geranium Geranium viscosissimum var. nervosum (Rydb.) C.L. Hitchc. sticky purple geranium Geranium viscosissimum var. viscosissimum Fisch. & C.A. Mey. ex C.A. Mey. sticky purple geranium GROSSULARIACEAE Grossularia = Ribes Ribes acerifolium T.J. Howell mapleleaf currant Ribes aureum Pursh golden currant Ribes aureum var. aureum Pursh golden currant Ribes binominatum Heller ground gooseberry Ribes bracteosum Dougl. ex Hook. stink currant Ribes cereum Dougl. wax currant Ribes cereum var. cereum Dougl. wax currant Ribes cereum var. colubrinum C.L. Hitchc. wax currant Ribes cruentum Greene shinyleaf currant Ribes cruentum var. cruentum Greene shinyleaf currant Ribes cruentum var. oregonense Berger Oregon currant Ribes divaricatum Dougl. spreading gooseberry Ribes divaricatum var. divaricatum Dougl. coastal black gooseberry Ribes erythrocarpum Coville & Leib. Crater Lake currant Ribes hudsonianum Richards. northern black currant Ribes hudsonianum var. petiolare (Dougl.) Jancz. western black currant Ribes inerme Rydb. whitestem gooseberry Ribes inerme var. inerme Rydb. whitestem gooseberry Ribes inerme var. klamathense (Coville) Jepson Klamath gooseberry Ribes lacustre (Pers.) Poir. prickly currant Ribes laxiflorum Pursh trailing black currant Ribes lobbii Gray gummy gooseberry Ribes marshallii Greene Hupa gooseberry Ribes menziesii Pursh canyon gooseberry Ribes menziesii var. menziesii Pursh Menzies' gooseberry Ribes montigenum McClatchie gooseberry currant Ribes nevadense Kellogg Sierran currant Ribes niveum Lindl. snow currant Ribes oxyacanthoides L. Canadian gooseberry Ribes oxyacanthoides ssp. cognatum (Greene) Sinnott stream currant Ribes oxyacanthoides ssp. irriguum (Dougl.) Sinnott Idaho gooseberry Ribes rubrum L. cultivated currant Ribes sanguineum Pursh redflower currant Ribes sanguineum var. glutinosum (Benth.) Loud. blood currant Ribes sanguineum var. sanguineum Pursh redflower currant Ribes triste Pallas red currant Ribes velutinum Greene desert gooseberry Ribes velutinum var. gooddingii (M.E. Peck) C.L. Hitchc. Gooding's gooseberry Ribes velutinum var. velutinum Greene desert gooseberry Ribes viscosissimum Pursh sticky currant Ribes viscosissimum var. viscosissimum Pursh sticky currant Ribes watsonianum Koehne spring gooseberry Ribes wolfii Rothrock Wolf's currant HALORAGACEAE Myriophyllum aquaticum (Vell.) Verdc. parrot feather watermilfoil Myriophyllum hippuroides Nutt. ex Torr. & Gray western watermilfoil Myriophyllum quitense Kunth Andean watermilfoil Myriophyllum sibiricum Komarov shortspike watermilfoil Myriophyllum verticillatum L. whorlleaf watermilfoil HIPPURIDACEAE Hippuris vulgaris L. common marestail HYDRANGEACEAE Philadelphus californicus Benth. California mockorange Philadelphus insignis Carr. summer mockorange Philadelphus lewisii Pursh Lewis' mockorange Philadelphus lewisii var. ellipticus Hu Lewis' mockorange Philadelphus lewisii var. gordonianus (Lindl.) Jepson Gordon's mockorange Philadelphus lewisii var. helleri (Rydb.) Hu Heller's mockorange Philadelphus lewisii var. intermedius (A. Nels.) Hu intermediate mockorange Philadelphus lewisii var. lewisii Pursh Lewis' mockorange Philadelphus lewisii var. oblongifolius Hu Lewis' mockorange Philadelphus oreganus Nutt. ex Torr. & Gray Oregon mockorange Philadelphus trichothecus Hu Columbian mockorange Whipplea modesta Torr. common whipplea HYDROCHARITACEAE Egeria densa Planch. Brazilian waterweed Elodea canadensis Michx. Canadian waterweed Elodea nuttallii (Planch.) St. John western waterweed Vallisneria americana Michx. American eelgrass HYDROPHYLLACEAE Eriodictyon californicum (Hook. & Arn.) Torr. California yerbasanta Hesperochiron californicus (Benth.) S. Wats. California hesperochiron Hesperochiron pumilus (Dougl. ex Griseb.) Porter dwarf hesperochiron Hydrophyllum capitatum Dougl. ex Benth. ballhead waterleaf Hydrophyllum capitatum var. alpinum S. Wats. alpine waterleaf Hydrophyllum capitatum var. capitatum Dougl. ex Benth. ballhead waterleaf Hydrophyllum capitatum var. thompsonii (M.E. Peck) Constance Thompson's waterleaf Hydrophyllum fendleri (Gray) Heller Fendler's waterleaf Hydrophyllum fendleri var. albifrons (Heller) J.F. Macbr. white waterleaf Hydrophyllum fendleri var. fendleri (Gray) Heller Fendler's waterleaf Hydrophyllum occidentale (S. Wats.) Gray western waterleaf Hydrophyllum tenuipes Heller Pacific waterleaf Nama aretioides (Hook. & Arn.) Brand ground nama Nama densum J.G. Lemmon leafy nama Nama densum var. densum J.G. Lemmon leafy fiddleleaf Nama densum var. parviflorum (Greenm.) C.L. Hitchc. leafy fiddleleaf Nama lobbii Gray Lobb's fiddleleaf Nemophila breviflora Gray basin nemophila Nemophila heterophylla Fisch. & C.A. Mey. small baby blue eyes Nemophila kirtleyi Henderson Kirtley's nemophila Nemophila menziesii Hook. & Arn. Menzies' baby blue eyes Nemophila menziesii var. atomaria (Fisch. & C.A. Mey.) Chandler Menzies' baby blue eyes Nemophila parviflora Dougl. ex Benth. smallflower nemophila Nemophila parviflora var. austiniae (Eastw.) Brand groovelover Nemophila parviflora var. parviflora Dougl. ex Benth. groovelover Nemophila pedunculata Dougl. ex Benth. littlefoot nemophila Phacelia adenophora J.T. Howell glandular yellow scorpionweed Phacelia argentea A. Nels. & J.F. Macbr. sanddune scorpionweed Phacelia bicolor Torr. ex S. Wats. twocolor phacelia Phacelia bolanderi Gray Bolander's scorpionweed Phacelia californica Cham. California scorpionweed Phacelia capitata Kruckeberg clustered scorpionweed Phacelia corymbosa Jepson serpentine scorpionweed Phacelia glandulifera Piper Phacelia gymnoclada Torr. ex S. Wats. nakedstem scorpionweed Phacelia hastata Dougl. ex Lehm. silverleaf phacelia Phacelia hastata var. compacta (Brand) Cronq. compact phacelia Phacelia hastata var. hastata Dougl. ex Lehm. silverleaf phacelia Phacelia heterophylla Pursh varileaf phacelia Phacelia heterophylla ssp. heterophylla Pursh varileaf phacelia Phacelia heterophylla ssp. virgata (Greene) Heckard varileaf phacelia Phacelia humilis Torr. & Gray low scorpionweed Phacelia humilis var. humilis Torr. & Gray low scorpionweed Phacelia hydrophylloides Torr. ex Gray waterleaf phacelia Phacelia inundata J.T. Howell playa yellow scorpionweed Phacelia ivesiana Torr. Ives' phacelia Phacelia leibergii Brand Leiberg's scorpionweed Phacelia leptosepala Rydb. narrowsepal scorpionweed Phacelia linearis (Pursh) Holz. threadleaf phacelia Phacelia lutea (Hook. & Arn.) J.T. Howell yellow phacelia Phacelia lutea var. calva Cronq. Owyhee phacelia Phacelia lutea var. lutea (Hook. & Arn.) J.T. Howell yellow phacelia Phacelia lutea var. mackenzieorum J. Grimes & Packard MacKenzie's phacelia Phacelia mutabilis Greene changeable scorpionweed Phacelia nemoralis Greene shade scorpionweed Phacelia nemoralis ssp. nemoralis Greene shade scorpionweed Phacelia nemoralis ssp. oregonensis Heckard Oregon scorpionweed Phacelia peckii J.T. Howell Peck's scorpionweed Phacelia procera Gray mountain phacelia Phacelia ramosissima Dougl. ex Lehm. branching phacelia Phacelia ramosissima var. eremophila (Greene) J.F. Macbr. brancing phacelia Phacelia ramosissima var. ramosissima Dougl. ex Lehm. branching phacelia Phacelia ramosissima var. subglabra M.E. Peck branching phacelia Phacelia rattanii Gray Rattan's phacelia Phacelia scopulina (A. Nels.) J.T. Howell Debeque phacelia Phacelia scopulina var. scopulina (A. Nels.) J.T. Howell Debeque phacelia Phacelia sericea (Graham) Gray silky phacelia Phacelia sericea ssp. ciliosa (Rydb.) Gillett purplefringe Phacelia sericea ssp. sericea (Graham) Gray purplefringe Phacelia tetramera J.T. Howell fourpart scorpionweed Phacelia thermalis Greene heated phacelia Phacelia verna T.J. Howell spring scorpionweed Romanzoffia californica Greene California mistmaiden Romanzoffia sitchensis Bong. Sitka mistmaiden Romanzoffia tracyi Jepson Tracy's mistmaiden IRIDACEAE Iris bracteata S. Wats. Siskiyou iris Iris chrysophylla T.J. Howell yellowleaf iris Iris douglasiana Herbert Douglas iris Iris innominata Henderson Del Norte County iris Iris missouriensis Nutt. Rocky Mountain iris Iris pseudacorus L. paleyellow iris Iris purdyi Eastw. Purdy's iris Iris tenax Dougl. ex Lindl. toughleaf iris Iris tenax ssp. tenax Dougl. ex Lindl. toughleaf iris Iris tenuis S. Wats. Clackamas iris Iris thompsonii R.C. Foster Thompson's iris Olsynium douglasii (A. Dietr.) Bickn. Douglas' olsynium Olsynium douglasii var. douglasii (A. Dietr.) Bickn. Douglas' olsynium Olsynium douglasii var. inflatum (Suksdorf) Cholewa & D. Henderson inflated olsynium Sisyrinchium angustifolium P. Mill. narrowleaf blueeyed grass Sisyrinchium bellum S. Wats. western blueeyed grass Sisyrinchium californicum (Ker-Gawl. ex Sims) Ait. golden blueeyed grass Sisyrinchium hitchcockii D. Henderson Hitchcock's blueeyed grass Sisyrinchium idahoense Bickn. Idaho blueeyed grass Sisyrinchium idahoense var. idahoense Bickn. Idaho blueeyed grass Sisyrinchium idahoense var. segetum (Bickn.) D. Henderson Idaho blueeyed grass Sisyrinchium sarmentosum Suksdorf ex Greene mountain blueeyed grass ISOETACEAE Isoetes bolanderi Engelm. Bolander's quillwort Isoetes bolanderi var. bolanderi Engelm. Bolander's quillwort Isoetes howellii Engelm. Howell's quillwort Isoetes lacustris L. lake quillwort Isoetes nuttallii A. Braun ex Engelm. Nuttall's quillwort Isoetes occidentalis Henderson western quillwort Isoetes tenella LĒman LABIATAE Agastache cusickii (Greenm.) Heller Cusick's giant hyssop Agastache occidentalis (Piper) Heller western giant hyssop Agastache urticifolia (Benth.) Kuntze nettleleaf giant hyssop Agastache urticifolia var. glaucifolia (Heller) Cronq. nettleleaf giant hyssop Agastache urticifolia var. urticifolia (Benth.) Kuntze nettleleaf giant hyssop Ajuga reptans L. common bugle Dracocephalum parviflorum Nutt. American dragonhead Glechoma hederacea L. groundivy Lamium amplexicaule L. henbit deadnettle Lamium maculatum L. spotted henbit Lamium purpureum L. purple deadnettle Lycopus americanus Muhl. ex W. Bart. American waterhorehound Lycopus asper Greene rough bugleweed Lycopus rubellus Moench taperleaf waterhorehound Lycopus uniflorus Michx. northern bugleweed Marrubium vulgare L. horehound Melissa officinalis L. common balm Mentha X piperita L. (pro sp.) peppermint Mentha X rotundifolia (L.) Huds. (pro sp.) mint Mentha X villosa Huds. (pro sp.) hairy mint Mentha aquatica L. water mint Mentha arvensis L. wild mint Mentha arvensis auct. non L. = Mentha canadensis Mentha canadensis L. (??) Canadian mint Mentha citrata Ehrh. = Mentha aquatica Mentha crispa L. = Mentha X piperita Mentha pulegium L. pennyroyal Mentha spicata L. spearmint Mentha viridis L. = Mentha spicata Micromeria chamissonis (Benth.) Greene = Satureja douglasii Moldavica parviflora (Nutt.) Britt. = Dracocephalum parviflorum Moluccella laevis L. shellflower Monarda didyma L. scarlet beebalm Monardella glauca Greene Monardella odoratissima Benth. Pacific monardella Monardella odoratissima ssp. discolor (Greene) Epling alpine mountainbalm Monardella odoratissima ssp. odoratissima Benth. alpine mountainbalm Monardella odoratissima ssp. pallida (Heller) Epling alpine mountainbalm Monardella sheltonii (Torr.) T.J. Howell Monardella villosa Benth. coyote mint Monardella villosa ssp. villosa Benth. coyote mountainbalm Nepeta cataria L. catnip Origanum vulgare L. wild marjoram Physostegia parviflora Nutt. ex Gray western false dragonhead Pogogyne ziziphoroides Benth. Sacramento mesamint Prunella vulgaris L. common selfheal Prunella vulgaris ssp. lanceolata (W. Bart.) Hulten lance selfheal Prunella vulgaris ssp. vulgaris L. common selfheal Rosmarinus officinalis L. rosemary Salvia aethiopis L. Mediterranean sage Salvia carnosa Dougl. ex Greene = Salvia dorrii ssp. dorrii var. incana Salvia dorrii (Kellogg) Abrams grayball sage Salvia dorrii ssp. dorrii (Kellogg) Abrams Dorr's sage Salvia dorrii ssp. dorrii var. dorrii (Kellogg) Abrams Dorr's sage Salvia dorrii ssp. dorrii var. incana (Benth.) Strachan purple sage Satureja chamissonis (Benth.) Briq. = Satureja douglasii Satureja douglasii (Benth.) Briq. yerba buena Scutellaria angustifolia Pursh narrowleaf skullcap Scutellaria antirrhinoides Benth. nose skullcap Scutellaria austiniae Eastw. = Scutellaria siphocamyploides Scutellaria epilobiifolia A. Hamilton = Scutellaria galericulata Scutellaria galericulata L. marsh skullcap Scutellaria lateriflora L. blue skullcap Scutellaria lateriflora var. lateriflora L. blue skullcap Scutellaria nana Gray dwarf skullcap Scutellaria siphocamyploides Vatke grayleaf skullcap Scutellaria tuberosa Benth. Danny's skullcap Stachys ajugoides Benth. bugle hedgenettle Stachys ajugoides var. rigida Jepson & Hoover Stachys cooleyae Heller Stachys palustris L. marsh hedgenettle Stachys palustris ssp. pilosa (Nutt.) Epling marsh hedgenettle Stachys rigida Nutt. ex Benth. = Stachys palustris ssp. pilosa Teucrium canadense L. Canada germander Teucrium canadense var. occidentale (Gray) McClintock & Epling western germander Thymus praecox Opiz mother of thyme Thymus praecox ssp. arcticus (Dur.) Jalas creeping thyme Thymus pulegioides L. lemon thyme Thymus serpyllum auct. non L. = Thymus praecox ssp. arcticus Trichostema lanceolatum Benth. vinegarweed Trichostema laxum Gray turpentine weed Trichostema oblongum Benth. oblong bluecurls Trichostema simulatum Jepson Siskiyou bluecurls LAURACEAE Umbellularia californica (Hook. & Arn.) Nutt. California laurel Umbellularia californica var. californica (Hook. & Arn.) Nutt. California laurel LEGUMINOSAE Astragalus aboriginorum Richards. = Astragalus australis Astragalus accidens S. Wats. Rogue River milkvetch Astragalus accidens var. accidens S. Wats. Rogue River milkvetch Astragalus accidens var. hendersonii M.E. Jones Henderson's milkvetch Astragalus agrestis Dougl. ex G. Don purple milkvetch Astragalus alpinus L. alpine milkvetch Astragalus alpinus var. alpinus L. alpine milkvetch Astragalus alvordensis M.E. Jones Alvord milkvetch Astragalus applegatei M.E. Peck Applegate's milkvetch Astragalus arrectus Gray Palouse milkvetch Astragalus arthurii M.E. Jones waha milkvetch Astragalus atratus S. Wats. mourning milkvetch Astragalus atratus var. owyheensis (A. Nels. & J.F. Macbr.) M.E. Jones Owyhee milkvetch Astragalus australis (L.) Lam. Indian milkvetch Astragalus beckwithii Torr. & Gray Beckwith's milkvetch Astragalus beckwithii var. weiserensis M.E. Jones Weiser's milkvetch Astragalus californicus (Gray) Greene Klamath Basin milkvetch Astragalus calycosus Torr. ex S. Wats. matted poison milkvetch Astragalus calycosus var. calycosus Torr. ex S. Wats. Torrey's milk-vetch Astragalus camptopus Barneby Bruneau milkvetch Astragalus canadensis L. Canadian milkvetch Astragalus canadensis var. brevidens (Gandog.) Barneby shorttooth Canadian milkvetch Astragalus canadensis var. mortonii (Nutt.) S. Wats. Morton's Canadian milkvetch Astragalus caricinus (M.E. Jones) Barneby buckwheat milkvetch Astragalus collinus (Hook.) Dougl. ex G. Don hillside milkvetch Astragalus collinus var. collinus (Hook.) Dougl. ex G. Don hillside milkvetch Astragalus collinus var. laurentii (Rydb.) Barneby Laurent's milkvetch Astragalus conjunctus S. Wats. Idaho milkvetch Astragalus curvicarpus (Heller) J.F. Macbr. curvepod milkvetch Astragalus curvicarpus var. brachycodon (Barneby) Barneby curvepod milkvetch Astragalus curvicarpus var. curvicarpus (Heller) J.F. Macbr. curvepod milkvetch Astragalus curvicarpus var. subglaber (Rydb.) Barneby smooth loco milkvetch Astragalus cusickii Gray Cusick's milkvetch Astragalus cusickii var. cusickii Gray Cusick's milkvetch Astragalus cusickii var. sterilis (Barneby) Barneby barren milkvetch Astragalus diaphanus Dougl. ex Hook. transparent milkvetch Astragalus eremiticus Sheldon hermit milkvetch Astragalus eucosmus B.L. Robins. elegant milkvetch Astragalus filipes Torr. ex Gray threadstalk milkvetch Astragalus gambelianus Sheldon Gambel's dwarf milkvetch Astragalus geyeri Gray Geyer's milkvetch Astragalus geyeri var. geyeri Gray Geyer's milkvetch Astragalus hoodianus T.J. Howell Hood River milkvetch Astragalus howellii Gray Howell's milkvetch Astragalus inflexus Dougl. ex Hook. bent milkvetch Astragalus iodanthus S. Wats. Humboldt River milkvetch Astragalus iodanthus var. diaphanoides Barneby snake milkvetch Astragalus iodanthus var. iodanthus S. Wats. Humboldt Riv