1651 Records
| Citation | Family Name |
| Abies bifolia A. Murray |
PINACEAE |
| Abronia fragrans Nuttall ex Hooker |
NYCTAGINACEAE |
| Abutilon theophrasti Medicus |
MALVACEAE |
| Acer glabrum Torrey |
ACERACEAE |
| Acer saccharinum L. |
ACERACEAE |
| Acetosella vulgaris (K. Koch) Fourreau |
POLYGONACEAE |
| Achillea lanulosa Nuttall |
ASTERACEAE |
| Achillea millefolium L. |
ASTERACEAE |
| Achnatherum hymenoides (Roemer & Schultes) Barkworth |
POACEAE |
| Achnatherum lettermanii (Vasey) Barkworth |
POACEAE |
| Achnatherum nelsonii (Scribner) Barkworth |
POACEAE |
| Achnatherum robustum (Vasey) Barkworth |
POACEAE |
| Achnatherum scribneri (Vasey) Barkworth |
POACEAE |
| Achnatherum x bloomeri (Bolander) Barkworth |
POACEAE |
| Acomastylis rossii (R. Brown) Greene ssp turbinata (Rydberg) W. A. Weber |
ROSACEAE |
| Aconitum columbianum Nuttall ex Torrey & Gray |
HELLEBORACEAE |
| Aconitum columbianum Nuttall ex Torrey & Gray var. columbianum |
HELLEBORACEAE |
| Acorus calamus L. |
ACORACEAE |
| Acosta diffusa (Lamarck) Sojak |
ASTERACEAE |
| Acosta maculosa (L.) Holub |
ASTERACEAE |
| Acrolasia albicaulis (Douglas ex Hooker) Rydberg |
LOASACEAE |
| Acrolasia dispersa (S. Watson) Davidson |
LOASACEAE |
| Acroptilon repens (L.) De Candolle |
ASTERACEAE |
| Actaea rubra (Aiton) Willdenow ssp arguta (Nuttall in Torrey & Gray) Hultén |
HELLEBORACEAE |
| Adenolinum grandiflorum (Desvaux) W. A. Weber |
LINACEAE |
| Adenolinum lewisii (Pursh) Löve & Löve |
LINACEAE |
| Adenolinum pratense (Norton) W. A. Weber |
LINACEAE |
| Adoxa moschatellina L. |
ADOXACEAE |
| Agalinis tenuifolia (M. Vahl) Rafinesque |
SCROPHULARIACEAE |
| Agaloma marginata (Pursh) Löve & Löve |
EUPHORBIACEAE |
| Agoseris aurantiaca (Hooker) Greene |
ASTERACEAE |
| Agoseris glauca (Pursh) Rafinesque |
ASTERACEAE |
| Agoseris glauca (Pursh) Rafinesque var laciniata (D. C. Eaton) Smiley |
ASTERACEAE |
| Agoseris glauca (Pursh) Rafinesque var. agrestis |
ASTERACEAE |
| Agoseris glauca (Pursh) Rafinesque var. dasycephala (Torrey & Gray) Jepson |
ASTERACEAE |
| Agrimonia striata Michaux |
ROSACEAE |
| Agropyron mongolicum Keng |
POACEAE |
| Agropyron pectiniforme Roemer & Schultes |
POACEAE |
| Agrostemma gracilis Boissier |
CARYOPHYLLACEAE |
| Agrostis exarata Trinius |
POACEAE |
| Agrostis gigantea Roth |
POACEAE |
| Agrostis humilis Vasey |
POACEAE |
| Agrostis idahoensis Nash |
POACEAE |
| Agrostis mertensii Trinius |
POACEAE |
| Agrostis scabra Willdenow |
POACEAE |
| Agrostis stolonifera L. |
POACEAE |
| Agrostis variabilis Rydberg |
POACEAE |
| Ailanthus altissima (P. Miller) Swingle |
SIMAROUBACEAE |
| Aletes acaulis (Torrey) Coulter & Rose |
APIACEAE |
| Aletes humilis Coulter & Rose |
APIACEAE |
| Aliciella pinnatifida (Nuttall ex A. Gray) J.M. Porter |
POLEMONIACEAE |
| Alisma gramineum Lejeune |
ALISMATACEAE |
| Alisma triviale Pursh |
ALISMATACEAE |
| Alliaria petiolata (Bieberstein) Cavara & Grande |
BRASSICACEAE |
| Allium cernuum Roth |
ALLIACEAE |
| Allium geyeri S. Watson |
ALLIACEAE |
| Allium sativum L. |
ALLIACEAE |
| Allium textile Nelson & Macbride |
ALLIACEAE |
| Alnus incana (L.) Moench ssp tenuifolia (Nuttall) Breitung |
BETULACEAE |
| Alopecurus aequalis Sobolewski |
POACEAE |
| Alopecurus alpinus L. |
POACEAE |
| Alopecurus pratensis L. |
POACEAE |
| Alsinanthe stricta (Swartz) Reichenbach |
ALSINACEAE |
| Alsine media L. |
ALSINACEAE |
| Alyssum alyssoides (L.) L. |
BRASSICACEAE |
| Alyssum desertorum Stapf |
BRASSICACEAE |
| Alyssum murale Waldstein & Kitaibel |
BRASSICACEAE |
| Alyssum parviflorum M. Bieberstein var. micranthum (C. A. Meyer in Fisher & Meyer) Dorn |
BRASSICACEAE |
| Amaranthus albus L. |
AMARANTHACEAE |
| Amaranthus arenicola I. M. Johnston |
AMARANTHACEAE |
| Amaranthus blitoides S. Watson |
AMARANTHACEAE |
| Amaranthus hybridus L. |
AMARANTHACEAE |
| Amaranthus palmeri S. Watson |
AMARANTHACEAE |
| Amaranthus powellii S. Watson |
AMARANTHACEAE |
| Amaranthus retroflexus L. |
AMARANTHACEAE |
| Ambrosia artemisiifolia L. var elatior (L.) Descourtils |
ASTERACEAE |
| Ambrosia psilostachya De Candolle var coronopifolia (Torrey & Gray) Farwell |
ASTERACEAE |
| Ambrosia tomentosa Nuttall |
ASTERACEAE |
| Ambrosia trifida L. |
ASTERACEAE |
| Amelanchier alnifolia Nuttall |
ROSACEAE |
| Amelanchier asiatica Endl. |
ROSACEAE |
| Amelanchier utahensis Koehne |
ROSACEAE |
| Amerosedum lanceolatum (Torrey) Löve & Löve |
CRASSULACEAE |
| Ammannia robusta Heer & Regel |
LYTHRACEAE |
| Amorpha fruticosa L. |
FABACEAE |
| Amorpha nana Nuttall |
FABACEAE |
| Amsinckia menziesii (Lehmann) Nelson & Macbride |
BORAGINACEAE |
| Amsinckia retrorsa Suksdorf |
BORAGINACEAE |
| Anagallis arvensis L.f. coerulea (Schreb.) Baumgartner |
PRIMULACEAE |
| Anagallis minima (L.) Krause in Sturm |
PRIMULACEAE |
| Anaphalis margaritacea (L.) Bentham & Hooker |
ASTERACEAE |
| Anchusa azurea P. Miller |
BORAGINACEAE |
| Anchusa officinalis L. |
BORAGINACEAE |
| Andropogon gerardii Vitman |
POACEAE |
| Androsace chamaejasme Host ssp carinata (Torrey) Hultén |
PRIMULACEAE |
| Androsace occidentalis Pursh |
PRIMULACEAE |
| Androsace septentrionalis L. |
PRIMULACEAE |
| Anemonastrum narcissiflorum (L.) Holub ssp zephyrum (A. Nelson) W. A. Weber |
RANUNCULACEAE |
| Anemone cylindrica A. Gray |
RANUNCULACEAE |
| Anemone multifida Poiret var globosa (Nuttall) Torrey & Gray |
RANUNCULACEAE |
| Anemonidium canadense (L.) Löve & Löve |
RANUNCULACEAE |
| Anemopsis californica Hooker |
SAURURACEAE |
| Angelica ampla A. Nelson |
APIACEAE |
| Angelica grayi (Coulter & Rose) Coulter & Rose |
APIACEAE |
| Anisantha sterilis (L.) Nevski |
POACEAE |
| Anisantha tectorum (L.) Nevski |
POACEAE |
| Antennaria corymbosa E. Nelson |
ASTERACEAE |
| Antennaria howellii Greene ssp neodioica (Greene) Bayer |
ASTERACEAE |
| Antennaria media Greene |
ASTERACEAE |
| Antennaria microphylla Rydberg |
ASTERACEAE |
| Antennaria neglecta Greene |
ASTERACEAE |
| Antennaria parvifolia Nuttall |
ASTERACEAE |
| Antennaria pulcherrima (Hooker) Greene ssp anaphaloides (Rydberg) W. A. Weber |
ASTERACEAE |
| Antennaria rosea Greene |
ASTERACEAE |
| Antennaria rosulata Rydberg |
ASTERACEAE |
| Antennaria umbrinella Rydberg |
ASTERACEAE |
| Anthemis cotula L. |
ASTERACEAE |
| Anticlea elegans (Pursh) Rydberg |
MELANTHIACEAE |
| Aphyllon fasciculatum (Nuttall) Torrey & Gray |
OROBANCHACEAE |
| Aphyllon uniflorum (L.) Torrey & Gray |
OROBANCHACEAE |
| Apios americana Medicus |
FABACEAE |
| Apocynum androsaemifolium L. |
APOCYNACEAE |
| Apocynum cannabinum L. |
APOCYNACEAE |
| Apocynum medium Greene |
APOCYNACEAE |
| Apocynum sibiricum Jacquin |
APOCYNACEAE |
| Aquilegia chrysantha A. Gray var rydbergii Munz |
HELLEBORACEAE |
| Aquilegia coerulea James ex Torrey |
HELLEBORACEAE |
| Aquilegia pubescens Coville |
HELLEBORACEAE |
| Aquilegia saximontana Rydberg ex B. L. Robinson in_A. Gray |
HELLEBORACEAE |
| Arabis hirsuta (L.) Scopoli |
BRASSICACEAE |
| Arabis hirsuta (L.) Scopoli var pycnocarpa (Hopkins) Rollins |
BRASSICACEAE |
| Aralia nudicaulis L. |
ARALIACEAE |
| Arceuthobium americanum Nuttall ex Engelmann |
VISCACEAE |
| Arceuthobium cyanocarpum Coulter & Nelson |
VISCACEAE |
| Arceuthobium vaginatum (Willdenow) K. Presl ssp cryptopodum (Engelmann) Hawksworth & Wiens |
VISCACEAE |
| Arctium minus (J. Hill) Bernhardi |
ASTERACEAE |
| Arctostaphylos uva-ursi (L.) Sprengel |
ERICACEAE |
| Arctostaphylos uva-ursi (L.) Sprengel ssp adenotricha (Fernald & Macbride) Calder & Taylor |
ERICACEAE |
| Arctostaphylos uva-ursi (L.) Sprengel ssp coactilis (Fernald & Macbride) Löve et al. |
ERICACEAE |
| Argemone hispida A. Gray |
PAPAVERACEAE |
| Argemone polyanthemos (Fedde) G. Ownbey |
PAPAVERACEAE |
| Argyrochosma fendleri (Kunze) Windham |
PTERIDACEAE |
| Aristida basiramea Engelmann |
POACEAE |
| Aristida oligantha Michaux |
POACEAE |
| Aristida purpurea Nuttall |
POACEAE |
| Arnica chamissonis Lessing |
ASTERACEAE |
| Arnica chamissonis Lessing ssp foliosa (Nuttall) Maguire |
ASTERACEAE |
| Arnica cordifolia Hooker |
ASTERACEAE |
| Arnica fulgens Pursh |
ASTERACEAE |
| Arnica latifolia Bongard |
ASTERACEAE |
| Arnica mollis Hooker |
ASTERACEAE |
| Arnica parryi A. Gray |
ASTERACEAE |
| Arnica rydbergii Greene |
ASTERACEAE |
| Arrhenatherum elatius (L.) P. Beauvois ex J. & K. Presl |
POACEAE |
| Artemisia absinthium L. |
ASTERACEAE |
| Artemisia annua L. |
ASTERACEAE |
| Artemisia arctica Lessing ssp saxicola (Rydberg) Hultén |
ASTERACEAE |
| Artemisia biennis Willdenow |
ASTERACEAE |
| Artemisia frigida Willdenow |
ASTERACEAE |
| Artemisia ludoviciana Nuttall |
ASTERACEAE |
| Artemisia ludoviciana Nuttall ssp incompta (Nuttall) Keck |
ASTERACEAE |
| Artemisia ludoviciana Nuttall ssp ludoviciana |
ASTERACEAE |
| Artemisia pattersonii A. Gray |
ASTERACEAE |
| Artemisia scopulorum A. Gray |
ASTERACEAE |
| Asclepias engelmanniana Woodson |
ASCLEPIADACEAE |
| Asclepias incarnata L. |
ASCLEPIADACEAE |
| Asclepias pumila (A. Gray) Vail |
ASCLEPIADACEAE |
| Asclepias speciosa Torrey |
ASCLEPIADACEAE |
| Asclepias stenophylla A. Gray |
ASCLEPIADACEAE |
| Asclepias subverticillata (A. Gray) Vail |
ASCLEPIADACEAE |
| Asclepias viridiflora Rafinesque |
ASCLEPIADACEAE |
| Askellia nana (Richardson) W. A. Weber |
ASTERACEAE |
| Asparagus officinalis L. |
ASPARAGACEAE |
| Asperugo procumbens L. |
BORAGINACEAE |
| Asplenium adiantum-nigrum L. |
ASPLENIACEAE |
| Asplenium septentrionale (L.) Hoffman |
ASPLENIACEAE |
| Asplenium trichomanes L. |
ASPLENIACEAE |
| Aster foliaceus Lindley ex De Candolle |
ASTERACEAE |
| Aster junciformis Rydberg |
ASTERACEAE |
| Aster laevis L. |
ASTERACEAE |
| Aster laevis L. var geyeri A. Gray |
ASTERACEAE |
| Aster lanceolatus Willdenow ssp hesperius (A. Gray) Semple & Chmielewski |
ASTERACEAE |
| Aster porteri A. Gray |
ASTERACEAE |
| Aster spathulatus Lindley ex De Candolle |
ASTERACEAE |
| Astragalus aboriginum Richardson var glabriusculus (Hooker) Rydberg |
FABACEAE |
| Astragalus adsurgens Pallas var robustior Hooker |
FABACEAE |
| Astragalus agrestis Douglas ex G. Don |
FABACEAE |
| Astragalus alpinus L. |
FABACEAE |
| Astragalus bisulcatus (Hooker) A. Gray |
FABACEAE |
| Astragalus canadensis L. var canadensis |
FABACEAE |
| Astragalus cicer L. |
FABACEAE |
| Astragalus crassicarpus Nuttall |
FABACEAE |
| Astragalus drummondii Douglas ex Hooker |
FABACEAE |
| Astragalus eucosmus B. L. Robinson |
FABACEAE |
| Astragalus falcatus Lamarck |
FABACEAE |
| Astragalus flexuosus (Hooker) G. Don |
FABACEAE |
| Astragalus lotiflorus Hooker |
FABACEAE |
| Astragalus miser Douglas in Hooker var oblongifolius (Rydberg) Cronquist |
FABACEAE |
| Astragalus parryi A. Gray |
FABACEAE |
| Astragalus shortianus Nuttall in Torrey & Gray |
FABACEAE |
| Astragalus sparsiflorus A. Gray |
FABACEAE |
| Astragalus tenellus Pursh |
FABACEAE |
| Athyrium distentifolium Tausch ex Opiz ssp americanum (Butters) Hulten |
DRYOPTERIDACEAE |
| Athyrium filix-femina (L.) Roth ex Mertens |
DRYOPTERIDACEAE |
| Atragene columbiana Nuttall |
RANUNCULACEAE |
| Atragene occidentalis Hornemann |
RANUNCULACEAE |
| Atriplex argentea Nuttall |
CHENOPODIACEAE |
| Atriplex canescens (Pursh) Nuttall |
CHENOPODIACEAE |
| Atriplex heterosperma Bunge |
CHENOPODIACEAE |
| Atriplex hortensis L. |
CHENOPODIACEAE |
| Atriplex patula L. |
CHENOPODIACEAE |
| Atriplex powellii S. Watson |
CHENOPODIACEAE |
| Atriplex rosea L. |
CHENOPODIACEAE |
| Atriplex truncata (Torrey) A. Gray |
CHENOPODIACEAE |
| Avena fatua L. |
POACEAE |
| Avena fatua L. var sativa (L.) Haussknecht |
POACEAE |
| Avenula hookeri (Scribner in Hackel) Holub |
POACEAE |
| Bacopa rotundifolia (Michaux) Wettstein in Engler & Prantl |
SCROPHULARIACEAE |
| Bahia dissecta (A. Gray) Britton |
ASTERACEAE |
| Balsamita major Desfontaines, non L. |
ASTERACEAE |
| Barbarea orthoceras Ledebour |
BRASSICACEAE |
| Barbarea vulgaris R. Brown |
BRASSICACEAE |
| Bassia hyssopifolia (Pallas) Kuntze |
CHENOPODIACEAE |
| Bassia sieversiana (Pallas) W. A. Weber |
CHENOPODIACEAE |
| Batrachium circinatum (Sibthorp) E. Fries ssp subrigidum (Drew) Löve & Löve |
RANUNCULACEAE |
| Batrachium trichophyllum (Chaix) van den Bosch |
RANUNCULACEAE |
| Beckmannia syzigachne (Steudel) Fernald ssp baicalensis (Kuznetzow) Koyama & Kuwano |
POACEAE |
| Berberis vulgaris L. |
BERBERIDACEAE |
| Bergia texana (Hooker) Seubert ex Walpers |
ELATINACEAE |
| Berteroa incana (L.) De Candolle |
BRASSICACEAE |
| Berula erecta (Hudson) Coville |
APIACEAE |
| Besseya alpina (A. Gray) Rydberg |
SCROPHULARIACEAE |
| Besseya plantaginea (Bentham in De Candolle) Rydberg |
SCROPHULARIACEAE |
| Betula fontinalis Sargent |
BETULACEAE |
| Betula glandulosa Michaux |
BETULACEAE |
| Betula papyrifera H. Marshall |
BETULACEAE |
| Bidens cernua L. |
ASTERACEAE |
| Bidens comosa (A. Gray) Wiegand |
ASTERACEAE |
| Bidens frondosa L. |
ASTERACEAE |
| Bidens vulgata Greene |
ASTERACEAE |
| Bistorta bistortoides (Pursh) Small |
POLYGONACEAE |
| Bistorta vivipara (L.) S. Gray |
POLYGONACEAE |
| Blepharoneuron tricholepis (Torrey) Nash |
POACEAE |
| Boechera divaricarpa (A. Nelson) Löve & Löve |
BRASSICACEAE |
| Boechera drummondii (A. Gray) Löve & Löve |
BRASSICACEAE |
| Boechera fendleri (S. Watson) W. A. Weber |
BRASSICACEAE |
| Boechera fendleri (S. Watson) W. A. Weber ssp spatifolia (Rydberg) W. A. Weber |
BRASSICACEAE |
| Boechera retrofracta (R. Graham) Löve & Löve |
BRASSICACEAE |
| Bothriochloa ischaemum (L.) Keng var songarica (Ruprecht ex Fischer & Meyer) Celarier & Harlan |
POACEAE |
| Bothriochloa laguroides (De Candolle) Herter ssp torreyana (Steudel) Allred & Gould |
POACEAE |
| Botrychium echo W. H. Wagner |
OPHIOGLOSSACEAE |
| Botrychium hesperium (Maxon & Clausen) Wagner & Lellinger |
OPHIOGLOSSACEAE |
| Botrychium lanceolatum (S. G. Gmelin) Ĺngström |
OPHIOGLOSSACEAE |
| Botrychium lunaria (L.) Swartz |
OPHIOGLOSSACEAE |
| Botrychium minganense Victorin |
OPHIOGLOSSACEAE |
| Botrychium pallidum W. H. Wagner |
OPHIOGLOSSACEAE |
| Botrychium simplex E. Hitchcock |
OPHIOGLOSSACEAE |
| Botrypus virginianus (L.) Holub ssp europaeus (Ĺngström) Holub |
OPHIOGLOSSACEAE |
| Bouteloua curtipendula (Michaux) Torrey |
POACEAE |
| Bouteloua curtipendula (Michaux) Torrey var curtipendula |
POACEAE |
| Brachyactis ciliata Ledebour ssp angusta (Lindley) A. Jones |
ASTERACEAE |
| Brassica juncea (L.) Cosson |
BRASSICACEAE |
| Brassica napus L. |
BRASSICACEAE |
| Brassica nigra (L.) K. Koch |
BRASSICACEAE |
| Brassica rapa L. |
BRASSICACEAE |
| Breea arvensis (L.) Lessing |
ASTERACEAE |
| Brickellia californica (Torrey & Gray) A. Gray |
ASTERACEAE |
| Brickellia eupatorioides (L.) Shinners |
ASTERACEAE |
| Brickellia grandiflora (Hooker) Nuttall |
ASTERACEAE |
| Brickellia rosmarinifolia (Ventenat) W. A. Weber |
ASTERACEAE |
| Brickellia rosmarinifolia (Ventenat) W. A. Weber ssp chlorolepis (Wooton & Standley) W. A. Weber |
ASTERACEAE |
| Briza media L. |
POACEAE |
| Bromelica spectabilis (Scribner) W. A. Weber |
POACEAE |
| Bromopsis canadensis (Michaux) Holub |
POACEAE |
| Bromopsis inermis (Leysser) Holub |
POACEAE |
| Bromopsis lanatipes (Shear) Holub |
POACEAE |
| Bromopsis porteri (Coulter) Holub |
POACEAE |
| Bromopsis pubescens (Mühlenberg ex Willdenow) Holub |
POACEAE |
| Bromopsis pumpelliana (Scribner) Holub |
POACEAE |
| Bromus briziformis Fischer & Meyer |
POACEAE |
| Bromus japonicus Thunberg |
POACEAE |
| Bromus secalinus L. |
POACEAE |
| Bromus squarrosus L. |
POACEAE |
| Buchloë dactyloides (Nuttall) Engelmann |
POACEAE |
| Buglossoides arvense (L.) I. M. Johnston |
BORAGINACEAE |
| Calamagrostis canadensis (Michaux) P. Beauvois |
POACEAE |
| Calamagrostis purpurascens R. Brown in Richardson |
POACEAE |
| Calamagrostis stricta (Timm) Koeler |
POACEAE |
| Calamovilfa longifolia (Hooker) Scribner in Hackel |
POACEAE |
| Callirhoë involucrata (Torrey & Gray) A. Gray |
MALVACEAE |
| Callitriche heterophylla Pursh emend. Darby |
CALLITRICHACEAE |
| Callitriche verna L. emend. Lönnroth |
CALLITRICHACEAE |
| Calochortus gunnisonii S. Watson |
CALOCHORTACEAE |
| Calylophus serrulatus (Nuttall) Raven |
ONAGRACEAE |
| Calypso bulbosa (L.) Oakes |
ORCHIDACEAE |
| Calystegia macounii (Greene) Brummitt |
CONVOLVULACEAE |
| Calystegia sepium (L.) R. Brown ssp angulata Brummitt |
CONVOLVULACEAE |
| Camelina microcarpa Andrzejowski ex De Candolle |
BRASSICACEAE |
| Campanula parryi A. Gray |
CAMPANULACEAE |
| Campanula rapunculoides L. |
CAMPANULACEAE |
| Campanula rotundifolia L. |
CAMPANULACEAE |
| Campanula uniflora L. |
CAMPANULACEAE |
| Cannabis sativa L. |
CANNABACEAE |
| Capsella bursa-pastoris (L.) Medicus |
BRASSICACEAE |
| Caragana arborescens Lamarck |
FABACEAE |
| Cardamine cordifolia A. Gray |
BRASSICACEAE |
| Cardamine hirsuta L. |
BRASSICACEAE |
| Cardaria chalepensis (L.) Handel-Mazzetti |
BRASSICACEAE |
| Cardaria draba (L.) Desvaux |
BRASSICACEAE |
| Cardaria latifolia (L.) Spach |
BRASSICACEAE |
| Cardaria pubescens (C. A. Meyer) Jarmolenko |
BRASSICACEAE |
| Carduus nutans L. ssp macrolepis (Peterman) Kazmi |
ASTERACEAE |
| Carex albo-nigra Mackenzie in Rydberg |
CYPERACEAE |
| Carex angustior Mackenzie in Rydberg |
CYPERACEAE |
| Carex aquatilis Wahlenberg |
CYPERACEAE |
| Carex aquatilis Wahlenberg ssp stans (Drejer) Hultén |
CYPERACEAE |
| Carex arapahoensis Clokey |
CYPERACEAE |
| Carex atherodes Sprengel |
CYPERACEAE |
| Carex athrostachya Olney |
CYPERACEAE |
| Carex atrata L. |
CYPERACEAE |
| Carex aurea Nuttall |
CYPERACEAE |
| Carex bella L. H. Bailey |
CYPERACEAE |
| Carex brevior (Dewey) Mackenzie |
CYPERACEAE |
| Carex brunnescens (Persoon) Poiret in Lamarck |
CYPERACEAE |
| Carex canescens L. |
CYPERACEAE |
| Carex capillaris L. |
CYPERACEAE |
| Carex chalciolepis Holm |
CYPERACEAE |
| Carex crandallii Gandoger |
CYPERACEAE |
| Carex crawei Dewey |
CYPERACEAE |
| Carex deweyana Schweinitz |
CYPERACEAE |
| Carex diandra Schrank |
CYPERACEAE |
| Carex disperma Dewey |
CYPERACEAE |
| Carex douglasii F. Boott in Hooker |
CYPERACEAE |
| Carex ebenea Rydberg |
CYPERACEAE |
| Carex elynoides Holm |
CYPERACEAE |
| Carex emoryi Dewey in Torrey |
CYPERACEAE |
| Carex festivella Mackenzie |
CYPERACEAE |
| Carex foenea Willdenow |
CYPERACEAE |
| Carex geyeri F. Boott |
CYPERACEAE |
| Carex hassei L. H. Bailey |
CYPERACEAE |
| Carex haydeniana Olney |
CYPERACEAE |
| Carex hoodii F. Boott in Hooker |
CYPERACEAE |
| Carex hystericina Mühlenberg ex Willdenow |
CYPERACEAE |
| Carex illota L. H. Bailey |
CYPERACEAE |
| Carex interior L. H. Bailey |
CYPERACEAE |
| Carex jonesii L. H. Bailey |
CYPERACEAE |
| Carex lachenalii Schkuhr |
CYPERACEAE |
| Carex lanuginosa Michaux |
CYPERACEAE |
| Carex lasiocarpa Ehrhart |
CYPERACEAE |
| Carex limnophila F. J. Hermann |
CYPERACEAE |
| Carex macloviana D'Urville |
CYPERACEAE |
| Carex magellanica Lamarck ssp irrigua (J. E. Smith) Hultén |
CYPERACEAE |
| Carex microglochin Wahlenberg |
CYPERACEAE |
| Carex microptera Mackenzie |
CYPERACEAE |
| Carex misandra R. Brown |
CYPERACEAE |
| Carex nardina E. Fries ssp hepburnii (F. Boott) Löve et al. |
CYPERACEAE |
| Carex nebrascensis Dewey |
CYPERACEAE |
| Carex nelsonii Mackenzie in Rydberg |
CYPERACEAE |
| Carex nigricans C. A. Meyer |
CYPERACEAE |
| Carex norvegica Retzius ssp stevenii (Holm) D. Murray |
CYPERACEAE |
| Carex nova L. H. Bailey |
CYPERACEAE |
| Carex obtusata Liljeblad |
CYPERACEAE |
| Carex occidentalis L. H. Bailey |
CYPERACEAE |
| Carex oreocharis Holm |
CYPERACEAE |
| Carex pachystachya Chamisso ex Steudel |
CYPERACEAE |
| Carex parryana Dewey ssp hallii (Olney) D. Murray |
CYPERACEAE |
| Carex pelocarpa F. J. Hermann |
CYPERACEAE |
| Carex pensylvanica Lamarck ssp heliophila (Mackenzie) W. A. Weber |
CYPERACEAE |
| Carex perglobosa Mackenzie |
CYPERACEAE |
| Carex petasata Dewey |
CYPERACEAE |
| Carex phaeocephala Piper |
CYPERACEAE |
| Carex praeceptorum Mackenzie |
CYPERACEAE |
| Carex praegracilis F. Boott |
CYPERACEAE |
| Carex praticola Rydberg |
CYPERACEAE |
| Carex rossii F. Boott in Hooker |
CYPERACEAE |
| Carex rupestris Allioni ssp drummondiana (Dewey) Holub |
CYPERACEAE |
| Carex saxatilis L. ssp laxa (Trautvetter) Kalela |
CYPERACEAE |
| Carex saximontana Mackenzie |
CYPERACEAE |
| Carex scoparia Schkuhr ex Willdenow |
CYPERACEAE |
| Carex scopulorum Holm |
CYPERACEAE |
| Carex simulata Mackenzie |
CYPERACEAE |
| Carex sprengelii Dewey ex Sprengel |
CYPERACEAE |
| Carex stenophylla Wahlenberg ssp eleocharis (L. H. Bailey) Hultén |
CYPERACEAE |
| Carex stipata Mühlenberg ex Willdenow |
CYPERACEAE |
| Carex sychnocephala Carey |
CYPERACEAE |
| Carex torreyi Tuckerman |
CYPERACEAE |
| Carex utriculata F. Boott |
CYPERACEAE |
| Carex vernacula L. H. Bailey |
CYPERACEAE |
| Carex vesicaria L. |
CYPERACEAE |
| Carex vulpinoidea Michaux |
CYPERACEAE |
| Carum carvi L. |
APIACEAE |
| Caryopteris clandonensis A. Simmonds ex Rehder |
VERBENACEAE |
| Castilleja integra A. Gray in Torrey |
SCROPHULARIACEAE |
| Castilleja linariifolia Bentham in De Candolle |
SCROPHULARIACEAE |
| Castilleja miniata Douglas ex Hooker |
SCROPHULARIACEAE |
| Castilleja occidentalis Torrey |
SCROPHULARIACEAE |
| Castilleja puberula Rydberg |
SCROPHULARIACEAE |
| Castilleja rhexifolia Rydberg |
SCROPHULARIACEAE |
| Castilleja sessiliflora Pursh |
SCROPHULARIACEAE |
| Castilleja sulphurea Rydberg |
SCROPHULARIACEAE |
| Caucalis daucoides L. |
APIACEAE |
| Ceanothus fendleri A. Gray |
RHAMNACEAE |
| Ceanothus herbaceus Rafinesque |
RHAMNACEAE |
| Ceanothus velutinus Douglas ex Hooker |
RHAMNACEAE |
| Celtis reticulata Torrey |
ULMACEAE |
| Cenchrus longispinus (Hackel in Kneucker) Fernald |
POACEAE |
| Cerastium fontanum Baumgartner |
ALSINACEAE |
| Cerastium nutans Rafinesque var brachypodum Engelmann ex A. Gray |
ALSINACEAE |
| Cerastium strictum L. {emend.} Haenke |
ALSINACEAE |
| Cerasus mahaleb (L.) Miller |
ROSACEAE |
| Cerasus pensylvanica (L. f.) Loiseleur |
ROSACEAE |
| Cerasus pumila (L.) Michaux ssp besseyi (L. H. Bailey) W. A. Weber |
ROSACEAE |
| Ceratocephala orthoceras De Candolle |
RANUNCULACEAE |
| Ceratochloa carinata (Hooker & Arnott) Tutin |
POACEAE |
| Ceratophyllum demersum L. |
CERATOPHYLLACEAE |
| Cercocarpus montanus Rafinesque |
ROSACEAE |
| Chaenorrhinum minus (L.) J. Lange in Willkomm & Lange |
SCROPHULARIACEAE |
| Chaetopappa ericoides (A. Gray) Nesom |
ASTERACEAE |
| Chamaepericlymenum canadense (L.) Ascherson & Graebner |
CORNACEAE |
| Chamaesyce fendleri (Torrey & Gray) Small |
EUPHORBIACEAE |
| Chamaesyce geyeri (Engelmann) Small |
EUPHORBIACEAE |
| Chamaesyce glyptosperma (Engelmann) Small |
EUPHORBIACEAE |
| Chamaesyce missurica (Rafinesque) Shinners |
EUPHORBIACEAE |
| Chamaesyce serpyllifolia (Persoon) Small |
EUPHORBIACEAE |
| Chamaesyce stictospora (Engelmann) Small |
EUPHORBIACEAE |
| Chamaesyce supina (Rafinesque) Moldenke |
EUPHORBIACEAE |
| Chamerion danielsii D. Löve |
ONAGRACEAE |
| Chamerion subdentatum (Rydberg) Löve & Löve |
ONAGRACEAE |
| Cheilanthes féei T. Moore |
PTERIDACEAE |
| Cheilanthes fendleri Hooker |
PTERIDACEAE |
| Chenopodium album L. |
CHENOPODIACEAE |
| Chenopodium atrovirens Rydberg |
CHENOPODIACEAE |
| Chenopodium berlandieri Moquin |
CHENOPODIACEAE |
| Chenopodium capitatum (L.) Ascherson |
CHENOPODIACEAE |
| Chenopodium foliosum (Moench) Ascherson |
CHENOPODIACEAE |
| Chenopodium fremontii S. Watson |
CHENOPODIACEAE |
| Chenopodium glaucum L. |
CHENOPODIACEAE |
| Chenopodium incanum (S. Watson) Heller |
CHENOPODIACEAE |
| Chenopodium leptophyllum (Nuttall ex Moquin) S. Watson |
CHENOPODIACEAE |
| Chenopodium missouriense Aellen |
CHENOPODIACEAE |
| Chenopodium pratericola Rydberg |
CHENOPODIACEAE |
| Chenopodium rubrum L. |
CHENOPODIACEAE |
| Chenopodium simplex (Torrey) Rafinesque |
CHENOPODIACEAE |
| Chenopodium strictum Roth |
CHENOPODIACEAE |
| Chimaphila umbellata (L.) W. Barton ssp occidentalis (Rydberg) Hultén |
PYROLACEAE |
| Chionophila jamesii Bentham in De Candolle |
SCROPHULARIACEAE |
| Chloris verticillata Nuttall |
POACEAE |
| Chlorocrepis albiflora (Hooker) W. A. Weber |
ASTERACEAE |
| Chlorocrepis fendleri (Schultz-Bipontinus) W. A. Weber |
ASTERACEAE |
| Chlorocrepis tristis (Willdenow ex Sprengel) Löve & Löve ssp gracilis (Hooker) W. A. Weber |
ASTERACEAE |
| Chondrophylla aquatica (L.) W. A. Weber |
GENTIANACEAE |
| Chondrosum gracile Humboldt, Bonpland, & Kunth |
POACEAE |
| Chondrosum hirsutum (Lagasca) Sweet |
POACEAE |
| Chorispora tenella (Pallas) De Candolle |
BRASSICACEAE |
| Chrysosplenium tetrandrum (N. Lund) Th. Fries |
SAXIFRAGACEAE |
| Chrysothamnus nauseosus (Pallas ex Pursh) Britton |
ASTERACEAE |
| Chrysothamnus nauseosus (Pallas ex Pursh) Britton ssp graveolens (Nuttall) Piper |
ASTERACEAE |
| Chrysothamnus nauseosus (Pallas ex Pursh) Britton ssp nauseosus |
ASTERACEAE |
| Chrysothamnus parryi (A. Gray) Greene ssp parryi |
ASTERACEAE |
| Cichorium intybus L. |
ASTERACEAE |
| Cicuta douglasii (De Candolle) Coulter & Rose |
APIACEAE |
| Ciliaria austromontana (Wiegand) W. A. Weber |
SAXIFRAGACEAE |
| Cinna latifolia (Treviranus) Grisebach in Ledebour |
POACEAE |
| Circaea alpina L. |
ONAGRACEAE |
| Circaea alpina L. ssp alpina |
ONAGRACEAE |
| Circaea alpina L. ssp pacifica (Ascherson & Magnus) Raven |
ONAGRACEAE |
| Cirsium centaureae (Rydberg) K. Schumann |
ASTERACEAE |
| Cirsium flodmanii (Rydberg) Arthur |
ASTERACEAE |
| Cirsium ochrocentrum A. Gray |
ASTERACEAE |
| Cirsium scopulorum (Greene) Cockerell |
ASTERACEAE |
| Cirsium undulatum (Nuttall) Sprengel |
ASTERACEAE |
| Cirsium vulgare (Savi) Tenore |
ASTERACEAE |
| Claytonia lanceolata Pursh |
PORTULACACEAE |
| Claytonia megarhiza (Parry ex A. Gray) S. Watson |
PORTULACACEAE |
| Claytonia rosea Rydberg |
PORTULACACEAE |
| Claytonia rubra (Howell) Tidestrom |
PORTULACACEAE |
| Clematis ligusticifolia Nuttall ex Torrey & Gray |
RANUNCULACEAE |
| Clementsia rhodantha (A. Gray) Rose |
CRASSULACEAE |
| Cleome serrulata Pursh |
CAPPARACEAE |
| Coeloglossum viride (L.) C. J. Hartman ssp bracteatum (Mühlenberg ex Willdenow) Hultén |
ORCHIDACEAE |
| Collinsia parviflora Douglas in Lindley |
SCROPHULARIACEAE |
| Collomia linearis Nuttall |
POLEMONIACEAE |
| Colutea arborescens L. |
FABACEAE |
| Comandra umbellata (L.) Nuttall ssp pallida (A. De Candolle) Piehl |
SANTALACEAE |
| Comastoma tenellum (Rottboel) Toyokuni |
GENTIANACEAE |
| Conioselinum scopulorum (A. Gray) Coulter & Rose |
APIACEAE |
| Conium maculatum L. |
APIACEAE |
| Conringia orientalis (L.) Dumont de Cours |
BRASSICACEAE |
| Convolvulus arvensis L. |
CONVOLVULACEAE |
| Conyza canadensis (L.) Cronquist |
ASTERACEAE |
| Corallorhiza maculata Rafinesque |
ORCHIDACEAE |
| Corallorhiza striata Lindley |
ORCHIDACEAE |
| Corallorhiza trifida (L.) Chatelain |
ORCHIDACEAE |
| Corallorhiza wisteriana Conrad |
ORCHIDACEAE |
| Coreopsis tinctoria Nuttall |
ASTERACEAE |
| Coriflora hirsutissima (Pursh) W. A. Weber |
RANUNCULACEAE |
| Coronaria coriacea (Moench) Shishkin & Gorschkova |
CARYOPHYLLACEAE |
| Corydalis aurea Willdenow |
FUMARIACEAE |
| Corydalis curvisiliqua Engelmann subsp. occidentalis (Engelmann ex A. Gray) W. A. Weber |
FUMARIACEAE |
| Corylus cornuta H. Marshall |
BETULACEAE |
| Coryphantha missouriensis (Sweet) Britton & Rose |
CACTACEAE |
| Cotoneaster lucida Schlecht |
ROSACEAE |
| Crataegus chrysocarpa Ashe |
ROSACEAE |
| Crataegus erythropoda Ashe |
ROSACEAE |
| Crataegus macracantha Loddiges var occidentalis (Britton) Eggleston |
ROSACEAE |
| Critesion brachyantherum (Nevski) Barkworth & Dewey |
POACEAE |
| Critesion glaucum (Steudel) Löve |
POACEAE |
| Critesion jubatum (L.) Nevski |
POACEAE |
| Critesion pusillum (Nuttall) Löve |
POACEAE |
| Crocanthemum bicknellii (Fernald) Janchen |
CISTACEAE |
| Crunocallis chamissoi (Ledebour ex Sprengel) Rydberg |
PORTULACACEAE |
| Crypsis alopecuroides (Piller & Mitterp) Schrader |
POACEAE |
| Cryptantha fendleri (A. Gray) Greene |
BORAGINACEAE |
| Cryptantha minima Rydberg |
BORAGINACEAE |
| Cryptogramma acrostichoides R. Brown in Richardson |
PTERIDACEAE |
| Cucurbita foetidissima Humboldt, Bonpland, & Kunth |
CUCURBITACEAE |
| Cuscuta epithymum (L.) L. ssp approximata (Babington) Rouy |
CUSCUTACEAE |
| Cyclachaena xanthifolia (Nuttall) Fresenius |
ASTERACEAE |
| Cycloloma atriplicifolium (Sprengel) Coulter |
CHENOPODIACEAE |
| Cylactis pubescens (Rafinesque) W. A. Weber |
ROSACEAE |
| Cylindropyrum cylindricum (Host) Löve |
POACEAE |
| Cymbalaria muralis Gaertn. Mey. & Scharb. |
SCROPHULARIACEAE |
| Cymopterus acaulis (Pursh) Rafinesque |
APIACEAE |
| Cymopterus montanus Torrey & Gray |
APIACEAE |
| Cynodon dactylon (L.) Persoon |
POACEAE |
| Cynoglossum officinale L. |
BORAGINACEAE |
| Cyperus acuminatus Torrey & Hooker |
CYPERACEAE |
| Cyperus aristatus Rottboel |
CYPERACEAE |
| Cyperus erythrorhizus Mühlenberg |
CYPERACEAE |
| Cyperus rivularis Kunth |
CYPERACEAE |
| Cypripedium fasciculatum Kellogg ex S. Watson |
CYPRIPEDIACEAE |
| Cyrtorhyncha ranunculina Nuttall ex Torrey & Gray |
RANUNCULACEAE |
| Cystopteris fragilis (L.) Bernhardi |
DRYOPTERIDACEAE |
| Cystopteris reevesiana Lellinger |
DRYOPTERIDACEAE |
| Dactylis glomerata L. |
POACEAE |
| Dalea candida Willdenow var oligophylla (Torrey) Shinners |
FABACEAE |
| Dalea purpurea Ventenat |
FABACEAE |
| Danthonia intermedia Vasey |
POACEAE |
| Danthonia parryi Scribner |
POACEAE |
| Danthonia spicata (L.) P. Beauvois ex Roemer & Schultes var pinetorum Piper |
POACEAE |
| Datura stramonium L. |
SOLANACEAE |
| Daucus carota L. |
APIACEAE |
| Delphinium barbeyi (Huth) Huth |
HELLEBORACEAE |
| Delphinium carolinianum Walter ssp virescens (Nuttall) R. Brooks |
HELLEBORACEAE |
| Delphinium geyeri Greene |
HELLEBORACEAE |
| Delphinium nuttallianum Pritzel ex Walpers |
HELLEBORACEAE |
| Delphinium ramosum Rydberg |
HELLEBORACEAE |
| Deschampsia cespitosa (L.) P. Beauvois |
POACEAE |
| Descurainia incisa (Engelmann ex A. Gray) Britton subsp. filipes (A. Gray) Rollins |
BRASSICACEAE |
| Descurainia incisa (Engelmann ex A. Gray) Britton subsp. incisa |
BRASSICACEAE |
| Descurainia incisa (Engelmann ex A. Gray) Britton subsp. viscosa (Rydberg) Rollins |
BRASSICACEAE |
| Descurainia pinnata (Walter) Britton subsp. halictorum (Cockerell) Detling |
BRASSICACEAE |
| Descurainia sophia (L.) Webb ex Prantl |
BRASSICACEAE |
| Dianthus armeria L. |
CARYOPHYLLACEAE |
| Dianthus deltoides L. |
CARYOPHYLLACEAE |
| Dichanthelium acuminatum (Swartz) Freckmann var sericeum (Schmoll) Freckmann |
POACEAE |
| Dichanthelium linearifolium (Scribner) Gould |
POACEAE |
| Dichanthelium oligosanthes (Schultes) Gould var scribnerianum (Nash) Gould |
POACEAE |
| Digitalis purpurea L. |
SCROPHULARIACEAE |
| Digitaria ischaemum (Schreber) Schreber ex Mühlenberg |
POACEAE |
| Digitaria sanguinalis (L.) Scopoli |
POACEAE |
| Diplachne fascicularis (Lamarck) P. Beauvois |
POACEAE |
| Dipsacus fullonum L. |
DIPSACACEAE |
| Dipsacus laciniatus L. |
DIPSACACEAE |
| Distegia involucrata (Banks ex Sprengel) Cockerell |
CAPRIFOLIACEAE |
| Distichlis stricta (Torrey) Rydberg |
POACEAE |
| Dodecatheon pulchellum (Rafinesque) Merrill |
PRIMULACEAE |
| Draba albertina Greene |
BRASSICACEAE |
| Draba aurea M. Vahl ex Hornemann |
BRASSICACEAE |
| Draba breweri S. Wats. var. cana (Rydb.) Rollins |
BRASSICACEAE |
| Draba crassifolia R. Graham |
BRASSICACEAE |
| Draba exunguiculata (O. E. Schulz) C. L. Hitchcock |
BRASSICACEAE |
| Draba fladnizensis Wulfen var. pattersonii (O. E. Schulz) Rollins |
BRASSICACEAE |
| Draba lonchocarpa Rydberg |
BRASSICACEAE |
| Draba nemorosa L. |
BRASSICACEAE |
| Draba porsildii Mulligan |
BRASSICACEAE |
| Draba reptans (Lamarck) Fernald |
BRASSICACEAE |
| Draba streptocarpa A. Gray |
BRASSICACEAE |
| Dracocephalum parviflorum Nuttall |
LAMIACEAE |
| Dryas octopetala L. ssp hookeriana (Juzepczuk) Hultén |
ROSACEAE |
| Drymaria effusa A. Gray var depressa (Greene) Duke |
ALSINACEAE |
| Drymocallis arguta (Pursh) Rydberg |
ROSACEAE |
| Drymocallis fissa (Nuttall) Rydberg |
ROSACEAE |
| Drymocallis glandulosa (Lindley) Rydberg |
ROSACEAE |
| Dryopteris filix-mas (L.) Schott |
DRYOPTERIDACEAE |
| Dyssodia papposa (Ventenat) A. S. Hitchcock |
ASTERACEAE |
| Echinacea angustifolia De Candolle |
ASTERACEAE |
| Echinacea purpurea (L.) Moench |
ASTERACEAE |
| Echinocereus viridiflorus Engelmann |
CACTACEAE |
| Echinochloa crus-galli (L.) P. Beauvois |
POACEAE |
| Echinocystis lobata (Michaux) Torrey & Gray |
CUCURBITACEAE |
| Echinops sphaerocephalus L. |
ASTERACEAE |
| Elaeagnus angustifolia L. |
ELAEAGNACEAE |
| Eleocharis acicularis (L.) Roemer & Schultes |
CYPERACEAE |
| Eleocharis elliptica Kunth var compressa (Sullivant) Drapalik & Mohlenbrock |
CYPERACEAE |
| Eleocharis obtusa (Willdenow) Schultes |
CYPERACEAE |
| Eleocharis obtusa (Willdenow) Schultes var detonsa (A. Gray) Drapalik & Mohlenbrock |
CYPERACEAE |
| Eleocharis palustris (L.) Roemer & Schultes |
CYPERACEAE |
| Eleocharis parvula (Roemer & Schultes) Link var anachaeta (Torrey) Svenson |
CYPERACEAE |
| Eleocharis quinqueflora (F. X. Hartman) Schwartz |
CYPERACEAE |
| Eleocharis rostellata Torrey |
CYPERACEAE |
| Eleocharis xyridiformis Fernald & Brackett |
CYPERACEAE |
| Ellisia nyctelea (L.) L. |
HYDROPHYLLACEAE |
| Elodea bifoliata St. John |
HYDROCHARITACEAE |
| Elodea canadensis Richardson in Michaux |
HYDROCHARITACEAE |
| Elodea nuttallii (Planchon) St. John |
HYDROCHARITACEAE |
| Elymus canadensis L. |
POACEAE |
| Elymus elymoides (Rafinesque) Swezey |
POACEAE |
| Elymus glaucus Buckley |
POACEAE |
| Elymus lanceolatus (Scribner & Smith) Gould |
POACEAE |
| Elymus longifolius (J. G. Smith) Gould |
POACEAE |
| Elymus macounii Vasey |
POACEAE |
| Elymus scribneri (Vasey) Jones |
POACEAE |
| Elymus trachycaulus (Link) Gould |
POACEAE |
| Elymus trachycaulus (Link) Gould ex Shinners ssp subsecundus (Link) Löve & Löve |
POACEAE |
| Elytrigia repens (L.) Nevski |
POACEAE |
| Epilobium anagallidifolium Lamarck |
ONAGRACEAE |
| Epilobium brachycarpum K. Presl |
ONAGRACEAE |
| Epilobium ciliatum Rafinesque |
ONAGRACEAE |
| Epilobium ciliatum Rafinesque ssp glandulosum (Lehmann) Hoch & Raven |
ONAGRACEAE |
| Epilobium halleanum Haussknecht |
ONAGRACEAE |
| Epilobium hornemannii Reichenbach |
ONAGRACEAE |
| Epilobium lactiflorum Haussknecht |
ONAGRACEAE |
| Epilobium leptophyllum Rafinesque |
ONAGRACEAE |
| Epilobium saximontanum Haussknecht |
ONAGRACEAE |
| Epipactis helleborine (L.) Crantz |
ORCHIDACEAE |
| Equisetum arvense L. |
EQUISETACEAE |
| Eragrostis cilianensis (Allioni) F. T. Hubbard |
POACEAE |
| Eragrostis diffusa Buckley |
POACEAE |
| Eragrostis minor Host |
POACEAE |
| Eragrostis pectinacea (Michaux) Nees |
POACEAE |
| Eragrostis pilosa (L.) P. Beauvois |
POACEAE |
| Eragrostis trichodes (Nuttall) Wood |
POACEAE |
| Eremogone fendleri (A. Gray) Ikonnikov |
ALSINACEAE |
| Erigeron canus A. Gray |
ASTERACEAE |
| Erigeron colo-mexicanus A. Nelson |
ASTERACEAE |
| Erigeron compositus Pursh |
ASTERACEAE |
| Erigeron coulteri T. C. Porter |
ASTERACEAE |
| Erigeron divergens Torrey & Gray |
ASTERACEAE |
| Erigeron elatior (A. Gray) Greene |
ASTERACEAE |
| Erigeron eximius Greene |
ASTERACEAE |
| Erigeron flagellaris A. Gray |
ASTERACEAE |
| Erigeron flagellaris A. Gray fma breviligulatus W. A. Weber |
ASTERACEAE |
| Erigeron formosissimus Greene |
ASTERACEAE |
| Erigeron formosissimus Greene var viscidus (Rydberg) Cronquist |
ASTERACEAE |
| Erigeron grandiflorus Hooker |
ASTERACEAE |
| Erigeron leiomerus A. Gray |
ASTERACEAE |
| Erigeron melanocephalus A. Nelson |
ASTERACEAE |
| Erigeron peregrinus (Banks ex Pursh) Greene |
ASTERACEAE |
| Erigeron peregrinus (Banks ex Pursh) Greene ssp callianthemus (Greene) Cronquist |
ASTERACEAE |
| Erigeron pinnatisectus (A. Gray) A. Nelson |
ASTERACEAE |
| Erigeron pumilus Nuttall |
ASTERACEAE |
| Erigeron simplex Greene |
ASTERACEAE |
| Erigeron speciosus (Lindley) De Candolle |
ASTERACEAE |
| Erigeron speciosus (Lindley) De Candolle var macranthus (Nuttall) Cronquist |
ASTERACEAE |
| Erigeron speciosus (Lindley) De Candolle var. speciosus |
ASTERACEAE |
| Erigeron subtrinervis Rydberg |
ASTERACEAE |
| Erigeron vetensis Rydberg |
ASTERACEAE |
| Eriogonum annuum Nuttall |
POLYGONACEAE |
| Eriogonum brevicaule Nuttall |
POLYGONACEAE |
| Eriogonum effusum Nuttall |
POLYGONACEAE |
| Eriogonum flavum Nuttall subsp. chloranthum (Greene) S. Stokes |
POLYGONACEAE |
| Eriogonum flavum Nuttall subsp. flavum |
POLYGONACEAE |
| Eriogonum jamesii Bentham in A. De Candolle |
POLYGONACEAE |
| Eriogonum subalpinum Greene |
POLYGONACEAE |
| Eriogonum umbellatum Torrey |
POLYGONACEAE |
| Eriogonum umbellatum Torrey var. umbellatum |
POLYGONACEAE |
| Eriophorum angustifolium Honckeny |
CYPERACEAE |
| Eriophorum gracile W.D.J. Koch in Roth |
CYPERACEAE |
| Eritrichum aretioides (Chamisso) De Candolle |
BORAGINACEAE |
| Erodium cicutarium (L.) L'Heritier |
GENTIANACEAE |
| Erysimum asperum (Nuttall) De Candolle |
BRASSICACEAE |
| Erysimum capitatum (Douglas) Greene |
BRASSICACEAE |
| Erysimum cheiranthoides L. ssp altum Ahti |
BRASSICACEAE |
| Erysimum repandum L. |
BRASSICACEAE |
| Erythrocoma triflora (Pursh) Greene |
ROSACEAE |
| Erythronium grandiflorum Pursh |
LILIACEAE |
| Eucephalus glaucus Nuttall |
ASTERACEAE |
| Eupatorium maculatum L. subsp. bruneri (A. Gray) G. W. Douglas |
ASTERACEAE |
| Eustoma grandiflorum (Rafinesque) Shinners |
GENTIANACEAE |
| Euthamia occidentalis Nuttall |
ASTERACEAE |
| Evax prolifera Nuttall ex De Candolle |
ASTERACEAE |
| Evolvulus nuttallianus Schultes |
CONVOLVULACEAE |
| Fallopia aubertii (Henry) Holub |
POLYGONACEAE |
| Fallopia convolvulus (L.) Löve |
POLYGONACEAE |
| Festuca arundinacea Schreber |
POACEAE |
| Festuca brachyphylla Schultes ssp coloradensis Fredriksen |
POACEAE |
| Festuca minutiflora Rydberg |
POACEAE |
| Festuca pratensis Hudson |
POACEAE |
| Festuca rubra L. |
POACEAE |
| Festuca saximontana Rydberg |
POACEAE |
| Festuca thurberi Vasey in Rothrock |
POACEAE |
| Filipendula ulmaria (L.) Maximowicz var. denudata (Hayne) Maximowicz |
ROSACEAE |
| Fragaria vesca L. ssp bracteata (Heller) Staudt |
ROSACEAE |
| Fragaria virginiana P. Miller ssp glauca (S. Watson) Staudt |
ROSACEAE |
| Frangula alnus P. Miller |
RHAMNACEAE |
| Frasera speciosa Douglas ex Grisebach |
GENTIANACEAE |
| Fraxinus pennsylvanica H. Marshall var lanceolata (Borkhausen) Sargent |
OLEACEAE |
| Froelichia gracilis (Hooker) Moquin |
AMARANTHACEAE |
| Gaillardia aristata Pursh |
ASTERACEAE |
| Galinsoga parviflora Cavanilles |
ASTERACEAE |
| Galinsoga quadriradiata Ruiz & Pavon |
ASTERACEAE |
| Galium aparine L. |
RUBIACEAE |
| Galium odoratum (L.) Scopoli |
RUBIACEAE |
| Galium septentrionale Roemer & Schultes |
RUBIACEAE |
| Galium spurium L. |
RUBIACEAE |
| Galium trifidum L. ssp subbiflorum (Wiegand) Puff |
RUBIACEAE |
| Galium triflorum Michaux |
RUBIACEAE |
| Galium verum L. |
RUBIACEAE |
| Gastrolychnis drummondii (Hooker) Löve & Löve |
CARYOPHYLLACEAE |
| Gaultheria humifusa (R. Graham) Rydberg |
ERICACEAE |
| Gaura coccinea Nuttall ex Pursh |
ONAGRACEAE |
| Gaura mollis James |
ONAGRACEAE |
| Gaura neomexicana Wooton ssp coloradensis (Rydberg) Raven & Gregory |
ONAGRACEAE |
| Gaura parviflora Douglas ex Lehmann |
ONAGRACEAE |
| Gayophytum diffusum Torrey & Gray ssp parviflorum Lewis & Szweykowski |
ONAGRACEAE |
| Gayophytum racemosum Torrey & Gray |
ONAGRACEAE |
| Gentianella acuta (Michaux) Hiitonen |
GENTIANACEAE |
| Gentianella heterosepala (Engelmann) Holub |
GENTIANACEAE |
| Gentianella strictiflora (Rydberg) W. A. Weber |
GENTIANACEAE |
| Gentianodes algida (Pallas) Löve & Löve |
GENTIANACEAE |
| Gentianopsis barbellata (Engelmann) Iltis |
GENTIANACEAE |
| Gentianopsis thermalis (Kuntze) Iltis |
GENTIANACEAE |
| Geranium bicknellii Britton |
GERANIACEAE |
| Geranium caespitosum James ex Torrey |
GERANIACEAE |
| Geranium columbinum L. |
GERANIACEAE |
| Geranium ibericum Cavanilles |
GERANIACEAE |
| Geranium richardsonii Fischer & Trautvetter |
GERANIACEAE |
| Geum aleppicum Jacquin ssp strictum (Aiton) Clausen |
ROSACEAE |
| Geum macrophyllum Willdenow |
ROSACEAE |
| Geum rivale L. |
ROSACEAE |
| Gilia ophthalmoides Brand |
POLEMONIACEAE |
| Gilia tricolor Bentham |
POLEMONIACEAE |
| Glandularia bipinnatifida (Nuttall) Nuttall |
VERBENACEAE |
| Glaucium corniculatum (L.) Rudolph |
PAPAVERACEAE |
| Glaucium flavum Crantz |
PAPAVERACEAE |
| Glecoma hederacea L. |
LAMIACEAE |
| Gleditsia triacanthos L. |
FABACEAE |
| Glyceria borealis (Nash) Batchelder |
POACEAE |
| Glyceria elata (Nash ex Rydberg) Jones |
POACEAE |
| Glyceria grandis S. Watson in A. Gray |
POACEAE |
| Glyceria striata (Lamarck) A. S. Hitchcock var stricta (Scribner) Fernald |
POACEAE |
| Glycyrrhiza lepidota Pursh |
FABACEAE |
| Gnaphalium palustre Nuttall |
ASTERACEAE |
| Gnaphalium uliginosum L. |
ASTERACEAE |
| Goodyera oblongifolia Rafinesque |
ORCHIDACEAE |
| Grammica denticulata (Engelmann in Parry) W. A. Weber |
CUSCUTACEAE |
| Grammica indecora (Choisy) W. A. Weber |
CUSCUTACEAE |
| Grammica indecora (Choisy) W. A. Weber var neuropetala (Engelmann) W. A. Weber |
CUSCUTACEAE |
| Gratiola neglecta Torrey |
SCROPHULARIACEAE |
| Grindelia squarrosa (Pursh) Dunal |
ASTERACEAE |
| Grindelia squarrosa (Pursh) Dunal var serrulata (Rydberg) Steyermark |
ASTERACEAE |
| Grindelia subalpina Greene |
ASTERACEAE |
| Grossheimia macrocephala (Mussin-Puschkin ex Willdenow) Sosnowsky & Takhtajan |
ASTERACEAE |
| Gutierrezia sarothrae (Pursh) Britton & Rusby |
ASTERACEAE |
| Gymnocarpium dryopteris (L.) Newman |
DRYOPTERIDACEAE |
| Gypsophila elegans Bieberstein |
CARYOPHYLLACEAE |
| Gypsophila paniculata L. |
CARYOPHYLLACEAE |
| Gypsophila scorzonerifolia Seringe in De Candolle |
CARYOPHYLLACEAE |
| Hackelia floribunda (Lehmann) I. M. Johnston |
BORAGINACEAE |
| Halerpestes cymbalaria (Pursh) Greene ssp saximontana (Fernald) Moldenke |
RANUNCULACEAE |
| Harbouria trachypleura (A. Gray) Coulter & Rose |
APIACEAE |
| Hecatonia scelerata (L.) Fourreau |
RANUNCULACEAE |
| Hedeoma drummondii Bentham |
LAMIACEAE |
| Hedeoma hispidum Pursh |
LAMIACEAE |
| Hedysarum boreale Nuttall |
FABACEAE |
| Helenium autumnale L. |
ASTERACEAE |
| Helianthella quinquenervis (Hooker) A. Gray |
ASTERACEAE |
| Helianthus annuus L. |
ASTERACEAE |
| Helianthus nuttallii Torrey & Gray |
ASTERACEAE |
| Helianthus petiolaris Nuttall |
ASTERACEAE |
| Helianthus pumilus Nuttall |
ASTERACEAE |
| Helianthus rigidus (Cassini) Desfontaines ssp subrhomboideus (Rydberg) Heiser |
ASTERACEAE |
| Helictotrichon mortonianum (Scribner) Henrard |
POACEAE |
| Heliomeris multiflora Nuttall var multiflora |
ASTERACEAE |
| Hemicarpha micrantha (Vahl) Pax var aristulata Coville |
CYPERACEAE |
| Heracleum sphondylium L. ssp montanum (Schleicher ex Gaudin) Briquet in Schinz & Thellung |
APIACEAE |
| Hesperis matronalis L. |
BRASSICACEAE |
| Hesperostipa comata (Trinius & Ruprecht) Barkworth |
POACEAE |
| Hesperostipa neomexicana (Thurber) Barkworth |
POACEAE |
| Hesperostipa spartea (Trinius) Barkworth |
POACEAE |
| Heterotheca foliosa (Nutt.) Shinners |
ASTERACEAE |
| Heterotheca pumila (Greene) Semple |
ASTERACEAE |
| Heterotheca villosa (Pursh) Shinners |
ASTERACEAE |
| Heuchera bracteata (Torrey) Seringe |
SAXIFRAGACEAE |
| Heuchera parvifolia Nuttall ex Torrey & Gray |
SAXIFRAGACEAE |
| Heuchera parvifolia Nuttall ex Torrey & Gray var nivalis (Rosendahl) Löve et al. |
SAXIFRAGACEAE |
| Hibiscus trionum L. |
MALVACEAE |
| Hieracium aurantiacum L. |
ASTERACEAE |
| Hierochloë hirta (Schrank) Borbas ssp arctica (J. Presl in K. Presl) G. Weimarck |
POACEAE |
| Hippochaete hyemalis (L.) Bruhin |
EQUISETACEAE |
| Hippochaete laevigata (A. Braun) Farwell |
EQUISETACEAE |
| Hippuris vulgaris L. |
HIPPURIDACEAE |
| Hirculus platysepalus (Trautvetter) W. A. Weber ssp crandallii (Gandoger) W. A. Weber |
SAXIFRAGACEAE |
| Hirculus prorepens (Fischer ex Sternberg) Löve & Löve |
SAXIFRAGACEAE |
| Hirculus serpyllifolius (Pursh) W. A. Weber ssp chrysanthus (A. Gray) W. A. Weber |
SAXIFRAGACEAE |
| Holcus lanatus L. |
POACEAE |
| Holodiscus dumosus (Nuttall ex Hooker) Heller |
ROSACEAE |
| Holosteum umbellatum L. |
ALSINACEAE |
| Hordeum vulgare L. var vulgare |
POACEAE |
| Humulus lupulus L. ssp americanus (Nuttall) Löve & Löve |
CANNABACEAE |
| Huperzia haleakalae (Brackenridge) Holub |
LYCOPODIACEAE |
| Hybanthus verticillatus (Ortega) Baillon |
VIOLACEAE |
| Hydrophyllum fendleri (A. Gray) Heller |
HYDROPHYLLACEAE |
| Hymenopappus filifolius Hooker var cinereus (Rydberg) I. M. Johnston |
ASTERACEAE |
| Hyoscyamus niger L. |
SOLANACEAE |
| Hypericum formosum Humboldt, Bonpland, & Kunth |
HYPERICACEAE |
| Hypericum majus (A. Gray) Britton |
HYPERICACEAE |
| Hypericum perforatum L. |
HYPERICACEAE |
| Hypochaeris radicata L. |
ASTERACEAE |
| Hypopitys monotropa Crantz |
MONOTROPACEAE |
| Hyssopus officinalis L. |
LAMIACEAE |
| Iberis intermedia Guersent |
BRASSICACEAE |
| Impatiens capensis Meerburgh |
BALSAMINACEAE |
| Ipomopsis aggregata (Pursh) V. Grant ssp candida (Rydberg) V. & A. Grant |
POLEMONIACEAE |
| Ipomopsis aggregata (Pursh) V. Grant ssp collina (Greene) Wilken & Allard |
POLEMONIACEAE |
| Ipomopsis laxiflora (Coulter) V. Grant |
POLEMONIACEAE |
| Ipomopsis spicata (Nuttall) V. Grant |
POLEMONIACEAE |
| Iris missouriensis Nuttall |
IRIDACEAE |
| Isatis tinctoria L. |
BRASSICACEAE |
| Isoëtes bolanderi Engelmann |
ISOETACEAE |
| Iva axillaris Pursh |
ASTERACEAE |
| Jacea pratensis Lamarck |
ASTERACEAE |
| Jamesia americana Torrey & Gray |
HYDRANGEACEAE |
| Juncus acuminatus Michaux |
JUNCACEAE |
| Juncus albescens (J. Lange) Fernald |
JUNCACEAE |
| Juncus alpino-articulatus Chaix in Villars |
JUNCACEAE |
| Juncus arcticus Willdenow ssp ater (Rydberg) Hultén |
JUNCACEAE |
| Juncus articulatus L. |
JUNCACEAE |
| Juncus biglumis L. |
JUNCACEAE |
| Juncus bufonius L. |
JUNCACEAE |
| Juncus castaneus J. E. Smith |
JUNCACEAE |
| Juncus comosa E. Meyer |
JUNCACEAE |
| Juncus compressus Jacquin |
JUNCACEAE |
| Juncus confusus Coville |
JUNCACEAE |
| Juncus drummondii E. Meyer |
JUNCACEAE |
| Juncus dudleyi Wiegand |
JUNCACEAE |
| Juncus effusus L. |
JUNCACEAE |
| Juncus filiformis L. |
JUNCACEAE |
| Juncus gerardii Loiseleur |
JUNCACEAE |
| Juncus interior Wiegand |
JUNCACEAE |
| Juncus longistylis Torrey |
JUNCACEAE |
| Juncus marginatus Rostkovius |
JUNCACEAE |
| Juncus mertensianus Bongard |
JUNCACEAE |
| Juncus nevadensis S. Watson |
JUNCACEAE |
| Juncus nodosus L. |
JUNCACEAE |
| Juncus parryi Engelmann |
JUNCACEAE |
| Juncus platyphyllus (Wiegand) Fernald |
JUNCACEAE |
| Juncus saximontanus A. Nelson |
JUNCACEAE |
| Juncus tenuis Willdenow |
JUNCACEAE |
| Juncus torreyi Coville |
JUNCACEAE |
| Juncus tracyi Rydberg |
JUNCACEAE |
| Juncus triglumis L. |
JUNCACEAE |
| Juncus tweedyi Rydberg |
JUNCACEAE |
| Juncus vaseyi Engelmann |
JUNCACEAE |
| Juniperus communis L. ssp alpina (J. E. Smith) Celakovsky |
CUPRESSACEAE |
| Kalmia microphylla (Hooker) Heller |
ERICACEAE |
| Kobresia myosuroides (Villars) Fiori & Paoli |
CYPERACEAE |
| Kobresia schoenoides (C. A. Meyer) Steudel |
CYPERACEAE |
| Kobresia simpliciuscula (Wahlenberg) Mackenzie |
CYPERACEAE |
| Koeleria macrantha (Ledebour) Schultes |
POACEAE |
| Koenigia islandica L. |
POLYGONACEAE |
| Krascheninnikovia lanata (Pursh) Meeuse & Smit |
CHENOPODIACEAE |
| Lactuca biennis (Moench) Fernald |
ASTERACEAE |
| Lactuca canadensis L. |
ASTERACEAE |
| Lactuca ludoviciana (Nuttall) Riddell |
ASTERACEAE |
| Lactuca serriola L. |
ASTERACEAE |
| Lactuca tatarica (L.) C. A. Meyer ssp pulchella (Pursh) Stebbins |
ASTERACEAE |
| Lamium amplexicaule L. |
LAMIACEAE |
| Lappula redowskii (Hornemann) Greene |
BORAGINACEAE |
| Lapsana communis L. |
ASTERACEAE |
| Lathyrus eucosmus Butters & St. John |
FABACEAE |
| Lathyrus latifolius L. |
FABACEAE |
| Lathyrus leucanthus Rydberg |
FABACEAE |
| Leersia oryzoides (L.) Swartz |
POACEAE |
| Lemna minor L. |
LEMNACEAE |
| Lemna minuscula Herter |
LEMNACEAE |
| Lemna turionifera Landolt |
LEMNACEAE |
| Leonurus cardiaca L. |
LAMIACEAE |
| Lepidium densiflorum Schrader |
BRASSICACEAE |
| Lepidium perfoliatum L. |
BRASSICACEAE |
| Lepidium virginicum L. var. virginicum |
BRASSICACEAE |
| Lepidotheca suaveolens (Pursh) Nuttall |
ASTERACEAE |
| Lesquerella montana (A. Gray) S. Watson |
BRASSICACEAE |
| Leucacantha cyanus (L.) Nieuwland & Lunell |
ASTERACEAE |
| Leucantha solstitialis (L.) Löve & Löve |
ASTERACEAE |
| Leucanthemum vulgare Lamarck |
ASTERACEAE |
| Leucocrinum montanum Nuttall ex A. Gray |
LILIACEAE |
| Leucopoa kingii (S. Watson) W. A. Weber |
POACEAE |
| Levisticum officinale W. Koch |
APIACEAE |
| Leymus ambiguus (Vasey & Scribner) D. Dewey |
POACEAE |
| Leymus cinereus (Scribner & Merrill) Löve |
POACEAE |
| Leymus triticoides (Buckley) Pilger |
POACEAE |
| Liatris ligulistylis (A. Nelson) K. Schumann |
ASTERACEAE |
| Liatris punctata Hooker |
ASTERACEAE |
| Lidia biflora (L.) A. Löve & D. Löve |
ALSINACEAE |
| Lidia obtusiloba (Rydberg) Löve & Löve |
ALSINACEAE |
| Ligularia bigelovii (A. Gray) W. A. Weber var hallii (A. Gray) W. A. Weber |
ASTERACEAE |
| Ligularia holmii (Greene) W. A. Weber |
ASTERACEAE |
| Ligularia pudica (Greene) W. A. Weber |
ASTERACEAE |
| Ligularia taraxacoides (A. Gray) W. A. Weber |
ASTERACEAE |
| Ligusticum porteri Coulter & Rose |
APIACEAE |
| Ligusticum tenuifolium S. Watson |
APIACEAE |
| Ligustrum vulgare L. |
OLEACEAE |
| Lilium philadelphicum L. |
LILIACEAE |
| Limosella aquatica L. |
SCROPHULARIACEAE |
| Linaria canadensis Dumont de Cours var texana (Scheele) Pennell |
SCROPHULARIACEAE |
| Linaria genistifolia (L.) P. Miller ssp dalmatica (L.) Maire et al. |
SCROPHULARIACEAE |
| Linaria vulgaris P. Miller |
SCROPHULARIACEAE |
| Lindernia dubia (L.) Pennell var anagallidea (Michaux) Cooperrider |
SCROPHULARIACEAE |
| Linnaea borealis L. ssp americana (Forbes) Hultén ex Clausen |
CAPRIFOLIACEAE |
| Listera convallarioides (Swartz) Nuttall |
ORCHIDACEAE |
| Listera cordata (L.) R. Brown ssp nephrophylla (Rydberg) Löve & Löve |
ORCHIDACEAE |
| Lithophragma glabrum Nuttall |
SAXIFRAGACEAE |
| Lithospermum incisum Lehmann |
BORAGINACEAE |
| Lithospermum multiflorum Torrey ex A. Gray |
BORAGINACEAE |
| Lloydia serotina (L.) Salisbury ex Reichenbach |
LILIACEAE |
| Lobelia siphilitica L. var ludoviciana A. De Candolle |
CAMPANULACEAE |
| Lobularia maritima (L.) Desvaux |
BRASSICACEAE |
| Lolium perenne L. ssp italicum (A. Braun) Syme |
POACEAE |
| Lomatium orientale Coulter & Rose |
APIACEAE |
| Lomatogonium rotatum (L.) Grisebach ssp tenuifolium (Grisebach) Porsild |
GENTIANACEAE |
| Lonicera morrowii A. Gray in Perry |
CAPRIFOLIACEAE |
| Lonicera tatarica L. |
CAPRIFOLIACEAE |
| Lotus tenuis Waldstein & Kitaibel |
FABACEAE |
| Lupinus argenteus Pursh |
FABACEAE |
| Lupinus pusillus Pursh |
FABACEAE |
| Lupinus pusillus Pursh ssp pusillus |
FABACEAE |
| Luzula parviflora (Ehrhart) Desvaux |
JUNCACEAE |
| Luzula spicata (L.) De Candolle |
JUNCACEAE |
| Luzula subcapitata (Rydberg) Harrington |
JUNCACEAE |
| Lycium barbarum L. |
SOLANACEAE |
| Lycopodium annotinum L. |
LYCOPODIACEAE |
| Lycopus americanus Mühlenberg ex W. Barton |
LAMIACEAE |
| Lycopus asper Greene |
LAMIACEAE |
| Lycopus uniflorus Michaux |
LAMIACEAE |
| Lycurus setosus (Nuttall) C. Reeder |
POACEAE |
| Lygodesmia juncea (Pursh) D. Don |
ASTERACEAE |
| Lysimachia ciliata L. |
PRIMULACEAE |
| Lysimachia nummularia L. |
PRIMULACEAE |
| Lysimachia vulgaris L. |
PRIMULACEAE |
| Lythrum alatum Pursh |
LYTHRACEAE |
| Lythrum salicaria L. |
LYTHRACEAE |
| Machaeranthera bigelovii (A. Gray) Greene |
ASTERACEAE |
| Machaeranthera pattersonii (A. Gray) Greene |
ASTERACEAE |
| Machaeranthera pinnatifida (Hooker) Shinners |
ASTERACEAE |
| Machaeranthera tanacetifolia (Humboldt, Bonpland, & Kunth) Nees |
ASTERACEAE |
| Madia glomerata Hooker |
ASTERACEAE |
| Mahonia repens (Lindley) G. Don |
BERBERIDACEAE |
| Maianthemum amplexicaule (Nuttall) W. A. Weber |
CONVALLARIACEAE |
| Maianthemum stellatum (L.) Link |
CONVALLARIACEAE |
| Malaxis monophyllos (L.) Solander ex Swartz ssp brachypoda (A. Gray) Löve & Löve |
ORCHIDACEAE |
| Malus domestica Borkhausen |
ROSACEAE |
| Malva neglecta Wallroth |
MALVACEAE |
| Mariscus fendlerianus (Böckeler) Koyama |
CYPERACEAE |
| Mariscus filiculmis (M. Vahl) Koyama |
CYPERACEAE |
| Mariscus schweinitzii (Torrey) Koyama |
CYPERACEAE |
| Marrubium vulgare L. |
LAMIACEAE |
| Marsilea vestita Hooker & Greville |
MARSILEACEAE |
| Matricaria perforata Merat |
ASTERACEAE |
| Medicago lupulina L. |
FABACEAE |
| Medicago sativa L. |
FABACEAE |
| Melandrium dioicum (L.) Cosson & Germain |
CARYOPHYLLACEAE |
| Melilotus albus Medicus |
FABACEAE |
| Melilotus officinale (L.) Pallas |
FABACEAE |
| Mentha arvensis L. |
LAMIACEAE |
| Mentha spicata L. |
LAMIACEAE |
| Menyanthes trifoliata L. |
MENYANTHACEAE |
| Mertensia ciliata (James ex Torrey) G. Don |
BORAGINACEAE |
| Mertensia lanceolata (Pursh) A. De Candolle |
BORAGINACEAE |
| Mertensia lanceolata (Pursh) A. De Candolle var viridis A. Nelson |
BORAGINACEAE |
| Mertensia lanceolata (Pursh) A. De Candolle var. bakeri |
BORAGINACEAE |
| Micranthes odontoloma (Piper) Heller |
SAXIFRAGACEAE |
| Micranthes rhomboidea (Greene) Small |
SAXIFRAGACEAE |
| Microseris nutans (Geyer ex Hooker) Schultz-Bipontinus |
ASTERACEAE |
| Microsteris gracilis (Douglas ex Hooker) Greene ssp humilis (Greene) V. Grant |
POLEMONIACEAE |
| Mimulus breweri (Greene) Coville |
SCROPHULARIACEAE |
| Mimulus floribundus Douglas in Lindley |
SCROPHULARIACEAE |
| Mimulus gemmiparus W. A. Weber |
SCROPHULARIACEAE |
| Mimulus glabratus Humboldt, Bonpland, & Kunth |
SCROPHULARIACEAE |
| Mimulus glabratus Humboldt, Bonpland, & Kunth var fremontii (Bentham) Adele Grant |
SCROPHULARIACEAE |
| Mimulus guttatus De Candolle |
SCROPHULARIACEAE |
| Mimulus tilingii Regel |
SCROPHULARIACEAE |
| Miscanthus sinensis Andersson |
POACEAE |
| Mitella pentandra Hooker |
SAXIFRAGACEAE |
| Mitella stauropetala Piper var stenopetala (Piper) Rosendahl |
SAXIFRAGACEAE |
| Moehringia lateriflora (L.) Fenzl |
ALSINACEAE |
| Mollugo verticillata L. |
MOLLUGINACEAE |
| Monarda fistulosa L. var menthifolia (R. Graham) Fernald |
LAMIACEAE |
| Monarda pectinata Nuttall |
LAMIACEAE |
| Moneses uniflora (L.) A. Gray |
PYROLACEAE |
| Monolepis nuttalliana (Schultes) Greene |
CHENOPODIACEAE |
| Monroa squarrosa (Nuttall) Torrey |
POACEAE |
| Morus alba L. |
MORACEAE |
| Muhlenbergia asperifolia (Nees & Meyen ex Trinius) Parodi |
POACEAE |
| Muhlenbergia filiformis (Thurber ex S. Watson) Rydberg |
POACEAE |
| Muhlenbergia minutissima (Steudel) Swallen |
POACEAE |
| Muhlenbergia montana (Nuttall) A. S. Hitchcock |
POACEAE |
| Muhlenbergia racemosa (Michaux) Britton, Sterns, & Poggenberg |
POACEAE |
| Muhlenbergia richardsonis (Trinius) Rydberg |
POACEAE |
| Muhlenbergia schreberi J. F. Gmelin |
POACEAE |
| Muhlenbergia torreyi (Kunth) A. S. Hitchcock ex Bush |
POACEAE |
| Muhlenbergia wrightii Vasey ex Coulter |
POACEAE |
| Muscaria delicatula Small |
SAXIFRAGACEAE |
| Muscaria micropetala (Small) Fedde |
SAXIFRAGACEAE |
| Musineon divaricatum (Pursh) Nuttal ex Torrey & Gray |
APIACEAE |
| Musineon divaricatum (Pursh) Rafinesque var divaricatum |
APIACEAE |
| Myosotis scorpioides L. |
BORAGINACEAE |
| Myosurus minimus L. ssp minimus |
RANUNCULACEAE |
| Myriophyllum sibiricum Komarov |
HALORAGACEAE |
| Najas guadalupensis (Sprengel) Magnus |
NAJADACEAE |
| Nassella viridula (Trinius) Barkworth |
POACEAE |
| Nasturtium officinale R. Brown |
BRASSICACEAE |
| Navarretia saximontana S.C. Spencer |
POLEMONIACEAE |
| Negundo aceroides (L.) Moench |
ACERACEAE |
| Neolepia campestris (L.) W. A. Weber |
BRASSICACEAE |
| Nepeta cataria L. |
LAMIACEAE |
| Nicotiana attenuata Torrey ex S. Watson |
SOLANACEAE |
| Noccaea montana (L.) F. K. Meyer |
BRASSICACEAE |
| Nothocalais cuspidata (Pursh) Greene |
ASTERACEAE |
| Nuphar lutea Sibthorp & Smith ssp polysepala (Engelmann) Beal |
NYMPHAEACEAE |
| Nuttallia decapetala (Pursh ex Sims) Greene |
LOASACEAE |
| Nuttallia multiflora (Nuttall) Greene |
LOASACEAE |
| Nuttallia nuda (Pursh) Greene |
LOASACEAE |
| Nuttallia sinuata (Rydberg) Daniels |
LOASACEAE |
| Nuttallia speciosa (Osterhout) Greene |
LOASACEAE |
| Oenothera albicaulis Pursh |
ONAGRACEAE |
| Oenothera caespitosa Nuttall ex Fraser |
ONAGRACEAE |
| Oenothera caespitosa Nuttall ex Fraser ssp caespitosa |
ONAGRACEAE |
| Oenothera caespitosa Nuttall ex Fraser ssp macroglottis (Rydberg) W. L. Wagner et al. |
ONAGRACEAE |
| Oenothera caespitosa Nuttall ex Fraser ssp marginata (Nuttall) W. L. Wagner et al. |
ONAGRACEAE |
| Oenothera coronopifolia Torrey & Gray |
ONAGRACEAE |
| Oenothera harringtonii W. L. Wagner et al in W. L. Wagner |
ONAGRACEAE |
| Oenothera howardii (A. Nelson) W. L. Wagner |
ONAGRACEAE |
| Oenothera nuttallii Sweet |
ONAGRACEAE |
| Oenothera villosa Thunberg ssp strigosa (Rydberg) Dietrich & Raven |
ONAGRACEAE |
| Oligoneuron rigidum (L.) Small |
ASTERACEAE |
| Oligosporus dracunculus (L.) Poljakov ssp glaucus (Pallas) Löve & Löve |
ASTERACEAE |
| Oligosporus filifolius (Torrey) Poljakov |
ASTERACEAE |
| Oligosporus groenlandicus (Hornemann) Löve & Löve |
ASTERACEAE |
| Oligosporus pacificus (Nuttall) Poljakov |
ASTERACEAE |
| Onopordum acanthium L. |
ASTERACEAE |
| Onosmodium molle Michaux ssp occidentale (Mackenzie) Cochrane |
BORAGINACEAE |
| Opuntia fragilis (Nuttall) Haworth |
CACTACEAE |
| Opuntia hybrid |
CACTACEAE |
| Opuntia macrorhiza Engelmann |
CACTACEAE |
| Opuntia phaeacantha Engelmann |
CACTACEAE |
| Opuntia polyacantha Haworth var. polyacantha |
CACTACEAE |
| Oreobatus deliciosus (James ex Torrey) Rydberg |
ROSACEAE |
| Oreobroma pygmaea (A. Gray) T. J. Howell |
PORTULACACEAE |
| Oreocarya suffruticosa (Torrey) Greene |
BORAGINACEAE |
| Oreocarya virgata (T. C. Porter) Greene |
BORAGINACEAE |
| Oreochrysum parryi (A. Gray) Rydberg |
ASTERACEAE |
| Oreoxis alpina (A. Gray) Coulter & Rose ssp alpina |
APIACEAE |
| Orobanche ludoviciana Nuttall |
OROBANCHACEAE |
| Orophaca tridactylica (A. Gray) Rydberg |
FABACEAE |
| Orthilia secunda (L.) House |
PYROLACEAE |
| Orthocarpus luteus Nuttall |
SCROPHULARIACEAE |
| Oryzopsis asperifolia Michaux |
POACEAE |
| Osmorhiza chilensis Hooker & Arnott |
APIACEAE |
| Osmorhiza depauperata Philippi |
APIACEAE |
| Osmorhiza longistylis (Torrey) De Candolle |
APIACEAE |
| Oxalis dillenii Jacquin |
OXALIDACEAE |
| Oxalis stricta L. |
OXALIDACEAE |
| Oxybaphus exaltatus (Standley) Weatherby |
NYCTAGINACEAE |
| Oxybaphus hirsutus (Pursh) Sweet in De Candolle |
NYCTAGINACEAE |
| Oxybaphus linearis (Pursh) B. L. Robinson |
NYCTAGINACEAE |
| Oxybaphus nyctagineus (Michaux) T. C. Porter in Porter & Coulter |
NYCTAGINACEAE |
| Oxypolis fendleri (A. Gray) Heller |
APIACEAE |
| Oxyria digyna (L.) J. Hill |
POLYGONACEAE |
| Oxytropis deflexa (Pallas) De Candolle |
FABACEAE |
| Oxytropis deflexa (Pallas) De Candolle var sericea Torrey & Gray |
FABACEAE |
| Oxytropis lambertii Pursh |
FABACEAE |
| Oxytropis multiceps Nuttall |
FABACEAE |
| Oxytropis parryi A. Gray |
FABACEAE |
| Oxytropis sericea Nuttall |
FABACEAE |
| Oxytropis splendens Douglas ex Hooker |
FABACEAE |
| Packera cana (Hooker) Weber & Löve |
ASTERACEAE |
| Packera crocata (Rydberg) Weber & Löve |
ASTERACEAE |
| Packera dimorphophylla (Greene) Weber & Löve |
ASTERACEAE |
| Packera dimorphophylla (Greene) Weber & Löve ssp dimorphophylla |
ASTERACEAE |
| Packera fendleri (A. Gray) Weber & Löve |
ASTERACEAE |
| Packera plattensis (Nuttall) Weber & Löve |
ASTERACEAE |
| Packera pseudaurea (Rydberg) Weber & Löve |
ASTERACEAE |
| Packera pseudaurea (Rydberg) Weber & Löve ssp flavula (Greene) Weber & Löve |
ASTERACEAE |
| Packera tridenticulata (Rydberg) Weber & Löve |
ASTERACEAE |
| Packera werneriifolia (A. Gray) Weber & Löve |
ASTERACEAE |
| Padus virginiana (L.) P. Miller ssp melanocarpa (A. Nelson) W. A. Weber |
ROSACEAE |
| Panicum capillare L. |
POACEAE |
| Panicum miliaceum L. |
POACEAE |
| Panicum virgatum L. |
POACEAE |
| Papaver argemone L. |
PAPAVERACEAE |
| Papaver kluanense D. Löve |
PAPAVERACEAE |
| Papaver orientale L. |
PAPAVERACEAE |
| Parietaria pensylvanica Mühlenberg ex Willdenow |
URTICACEAE |
| Parnassia fimbriata Konig |
PARNASSIACEAE |
| Parnassia kotzebuei Chamisso & Schlechtendal |
PARNASSIACEAE |
| Parnassia parviflora De Candolle |
PARNASSIACEAE |
| Paronychia jamesii Torrey & Gray |
ALSINACEAE |
| Paronychia pulvinata A. Gray |
ALSINACEAE |
| Parthenocissus vitacea (Knerr) A. S. Hitchcock |
VITACEAE |
| Pascopyrum smithii (Rydberg) Löve |
POACEAE |
| Paspalum pubiflorum Ruprecht ex Fournier var glabrum Vasey & Scribner |
POACEAE |
| Pastinaca sativa L. |
APIACEAE |
| Paxistima myrsinites (Pursh) Rafinesque |
CELASTRACEAE |
| Pedicularis bracteosa Bentham in Hooker ssp paysoniana (Pennell) W. A. Weber |
SCROPHULARIACEAE |
| Pedicularis groenlandica Retzius |
SCROPHULARIACEAE |
| Pedicularis parryi A. Gray ssp parryi |
SCROPHULARIACEAE |
| Pedicularis procera A. Gray |
SCROPHULARIACEAE |
| Pedicularis racemosa Douglas ex Hooker ssp alba Pennell |
SCROPHULARIACEAE |
| Pedicularis scopulorum A. Gray |
SCROPHULARIACEAE |
| Pediocactus simpsonii (Engelmann) Britton & Rose var minor (Engelmann) Cockerell |
CACTACEAE |
| Pediomelum esculentum (Pursh) Rydberg |
FABACEAE |
| Pellaea wrightiana Hooker |
PTERIDACEAE |
| Penstemon albidus Nuttall |
SCROPHULARIACEAE |
| Penstemon angustifolius Nuttall ex Pursh |
SCROPHULARIACEAE |
| Penstemon angustifolius Nuttall ex Pursh ssp angustifolius |
SCROPHULARIACEAE |
| Penstemon glaber Pursh |
SCROPHULARIACEAE |
| Penstemon glaber Pursh var glaber |
SCROPHULARIACEAE |
| Penstemon gracilis Nuttall |
SCROPHULARIACEAE |
| Penstemon procerus Douglas ex R. Graham var procerus |
SCROPHULARIACEAE |
| Penstemon secundiflorus Bentham in De Candolle |
SCROPHULARIACEAE |
| Penstemon strictus Bentham in De Candolle |
SCROPHULARIACEAE |
| Penstemon virens Pennell ex Rydberg |
SCROPHULARIACEAE |
| Penstemon virgatus A. Gray ssp asa-grayi Crosswhite |
SCROPHULARIACEAE |
| Penstemon whippleanus A. Gray |
SCROPHULARIACEAE |
| Pentaphylloides floribunda (Pursh) Löve |
ROSACEAE |
| Pericome caudata A. Gray |
ASTERACEAE |
| Persicaria amphibia (L.) S. Gray |
POLYGONACEAE |
| Persicaria coccinea (Mühlenberg ex Willdenow) Greene |
POLYGONACEAE |
| Persicaria hydropiper (L.) Opiz |
POLYGONACEAE |
| Persicaria lapathifolia (L.) S. Gray |
POLYGONACEAE |
| Persicaria maculata (L.) S. Gray |
POLYGONACEAE |
| Persicaria pensylvanica (L.) Gomez |
POLYGONACEAE |
| Persicaria punctata (Elliott) Small |
POLYGONACEAE |
| Petasites sagittatus (Banks ex Pursh) A. Gray |
ASTERACEAE |
| Phacelia denticulata Osterhout |
HYDROPHYLLACEAE |
| Phacelia hastata Douglas ex Lehmann |
HYDROPHYLLACEAE |
| Phacelia heterophylla Pursh |
HYDROPHYLLACEAE |
| Phacelia sericea (R. Graham) A. Gray |
HYDROPHYLLACEAE |
| Phacelia sericea (R. Graham) A. Gray ssp sericea |
HYDROPHYLLACEAE |
| Phacelia tanacetifolia Bentham |
HYDROPHYLLACEAE |
| Phalaris canariensis L. |
POACEAE |
| Phalaroides arundinacea (L.) Rauschert |
POACEAE |
| Phippsia algida (Phipps) R. Brown |
POACEAE |
| Phleum commutatum Gaudin |
POACEAE |
| Phleum pratense L. |
POACEAE |
| Phlox multiflora A. Nelson |
POLEMONIACEAE |
| Phlox sibirica L. ssp pulvinata (Wherry) W. A. Weber |
POLEMONIACEAE |
| Phragmites australis (Cavanilles) Trinius ex Steudel |
POACEAE |
| Phyla cuneifolia (Torrey) Greene |
VERBENACEAE |
| Physalis hederifolia A. Gray var. comata (Rydberg) Waterfall |
SOLANACEAE |
| Physalis heterophylla Nees |
SOLANACEAE |
| Physalis pumila Nuttall ssp hispida (Waterfall) Hinton |
SOLANACEAE |
| Physalis virginiana P. Miller |
SOLANACEAE |
| Physaria bellii Mulligan |
BRASSICACEAE |
| Physaria vitulifera Rydberg |
BRASSICACEAE |
| Physocarpus monogynus (Torrey) Coulter |
ROSACEAE |
| Physocarpus opulifolius (L.) Maximovicz |
ROSACEAE |
| Picea engelmannii Parry ex Engelmann |
PINACEAE |
| Picea pungens Engelmann |
PINACEAE |
| Picradeniopsis oppositifolia (Nuttall) Rydberg |
ASTERACEAE |
| Pinus aristata Engelmann |
PINACEAE |
| Pinus contorta Douglas ex Loudon var latifolia Engelmann |
PINACEAE |
| Pinus edulis Engelmann |
PINACEAE |
| Pinus flexilis James |
PINACEAE |
| Pinus ponderosa Douglas ex P. & C. Lawson ssp scopulorum (S. Watson) W. A. Weber |
PINACEAE |
| Piperia unalascensis (Sprengel) Rydberg |
ORCHIDACEAE |
| Piptatherum micranthum (Trinius & Ruprecht) Barkworth |
POACEAE |
| Plagiobothrys scouleri (Hooker & Arnott) I. M. Johnston ssp penicillata (Greene) Löve |
BORAGINACEAE |
| Plantago elongata Pursh |
PLANTAGINACEAE |
| Plantago eriopoda Torrey |
PLANTAGINACEAE |
| Plantago lanceolata L. |
PLANTAGINACEAE |
| Plantago major L. |
PLANTAGINACEAE |
| Plantago patagonica Jacquin |
PLANTAGINACEAE |
| Platanthera aquilonis Sheviak |
ORCHIDACEAE |
| Platanthera dilatata (Pursh) Lindley ex L.C. Beck |
ORCHIDACEAE |
| Platanthera huronensis (Nuttall) Lindley |
ORCHIDACEAE |
| Platanthera obtusata (Banks ex Pursh) Lindley |
ORCHIDACEAE |
| Platanthera purpurascens (Rydberg) Sheviak & W.F. Jennings |
ORCHIDACEAE |
| Pneumonanthe andrewsii (Grisebach in Hooker) W. A. Weber |
GENTIANACEAE |
| Pneumonanthe bigelovii (A. Gray) Greene |
GENTIANACEAE |
| Pneumonanthe parryi (Engelmann) Greene |
GENTIANACEAE |
| Poa abbreviata R. Brown ssp pattersonii (Vasey) Löve et al. |
POACEAE |
| Poa agassizensis Boivin & D. Löve |
POACEAE |
| Poa alpina L. |
POACEAE |
| Poa annua L. |
POACEAE |
| Poa arctica R. Brown |
POACEAE |
| Poa arida Vasey |
POACEAE |
| Poa bulbosa L. |
POACEAE |
| Poa compressa L. |
POACEAE |
| Poa cusickii Vasey ssp epilis (Scribner) W. A. Weber |
POACEAE |
| Poa fendleriana (Steudel) Vasey |
POACEAE |
| Poa glauca M. Vahl ssp rupicola (Nash) W. A. Weber |
POACEAE |
| Poa glaucifolia Scribner & Williams |
POACEAE |
| Poa juncifolia Scribner |
POACEAE |
| Poa leptocoma Trinius |
POACEAE |
| Poa lettermanii Vasey |
POACEAE |
| Poa nemoralis L. ssp interior (Rydberg) W. A. Weber |
POACEAE |
| Poa nervosa (Hooker) Vasey |
POACEAE |
| Poa palustris L. |
POACEAE |
| Poa pratensis L. |
POACEAE |
| Poa reflexa Vasey & Scribner |
POACEAE |
| Poa secunda J. Presl in K. Presl |
POACEAE |
| Poa sp. |
POACEAE |
| Poa tracyi Vasey |
POACEAE |
| Poa trivialis L. |
POACEAE |
| Pocilla biloba (L.) W. A. Weber |
SCROPHULARIACEAE |
| Pocilla polita (E. Fries) Fourreau |
SCROPHULARIACEAE |
| Podospermum laciniatum (L.) De Candolle |
ASTERACEAE |
| Poinsettia dentata (Michaux) Klotsch & Garcke |
EUPHORBIACEAE |
| Polanisia dodecandra (L.) De Candolle |
CAPPARACEAE |
| Polemonium brandegei (A. Gray) Greene |
POLEMONIACEAE |
| Polemonium confertum A. Gray |
POLEMONIACEAE |
| Polemonium foliosissimum (A. Gray) A. Gray |
POLEMONIACEAE |
| Polemonium pulcherrimum Hooker ssp delicatum (Rydberg) Brand |
POLEMONIACEAE |
| Polemonium viscosum Nuttall |
POLEMONIACEAE |
| Polygonum arenastrum Boreau |
POLYGONACEAE |
| Polygonum douglasii Greene |
POLYGONACEAE |
| Polygonum erectum L. ssp achoreum (S. F. Blake) Löve & Löve |
POLYGONACEAE |
| Polygonum polygaloides Meissner ssp kelloggii (Greene) Hickman |
POLYGONACEAE |
| Polygonum ramosissimum Michaux |
POLYGONACEAE |
| Polypodium saximontanum Windham |
POLYPODIACEAE |
| Polypogon interruptus Humboldt, Bonpland & Kunth |
POACEAE |
| Polypogon monspeliensis (L.) Desfontaines |
POACEAE |
| Polystichum lonchitis (L.) Roth |
DRYOPTERIDACEAE |
| Populus acuminata Rydberg |
SALICACEAE |
| Populus alba L. |
SALICACEAE |
| Populus angustifolia James |
SALICACEAE |
| Populus balsamifera L. |
SALICACEAE |
| Populus deltoides H. Marshall ssp monilifera (Aiton) Eckenwalder |
SALICACEAE |
| Populus tremuloides Michaux |
SALICACEAE |
| Populus x brayshawii Boivin |
SALICACEAE |
| Portulaca oleracea L. |
PORTULACACEAE |
| Potamogeton alpinus Balbis |
POTAMOGETONACEAE |
| Potamogeton diversifolius Rafinesque |
POTAMOGETONACEAE |
| Potamogeton foliosus Rafinesque |
POTAMOGETONACEAE |
| Potamogeton gramineus L. |
POTAMOGETONACEAE |
| Potamogeton nodosus Poiret in Lamarck |
POTAMOGETONACEAE |
| Potamogeton perfoliatus L. ssp richardsonii (Bennett) Hultén |
POTAMOGETONACEAE |
| Potamogeton pusillus L. |
POTAMOGETONACEAE |
| Potamogeton sp. |
POTAMOGETONACEAE |
| Potentilla anglica Laicharding |
ROSACEAE |
| Potentilla argentea L. |
ROSACEAE |
| Potentilla concinna Richardson var. concinna |
ROSACEAE |
| Potentilla diversifolia Lehmann |
ROSACEAE |
| Potentilla effusa Douglas ex Lehmann |
ROSACEAE |
| Potentilla gracilis Douglas |
ROSACEAE |
| Potentilla hippiana Lehmann |
ROSACEAE |
| Potentilla hippiana x effusa |
ROSACEAE |
| Potentilla nivea L. |
ROSACEAE |
| Potentilla norvegica L. |
ROSACEAE |
| Potentilla ovina Macoun |
ROSACEAE |
| Potentilla pensylvanica L. |
ROSACEAE |
| Potentilla pulcherrima Lehmann |
ROSACEAE |
| Potentilla pulcherrima x hippiana |
ROSACEAE |
| Potentilla recta L. |
ROSACEAE |
| Potentilla reptans L. |
ROSACEAE |
| Potentilla rivalis Nuttall ex Torrey & Gray |
ROSACEAE |
| Potentilla rubricaulis Lehmann |
ROSACEAE |
| Potentilla rupincola Osterhout |
ROSACEAE |
| Potentilla subjuga Rydberg |
ROSACEAE |
| Potentilla supina L. ssp paradoxa (Nuttall ex Torrey & Gray) Sojak |
ROSACEAE |
| Potentilla uniflora Ledebour |
ROSACEAE |
| Prenanthes racemosa Michaux |
ASTERACEAE |
| Primula angustifolia Torrey |
PRIMULACEAE |
| Primula parryi A. Gray |
PRIMULACEAE |
| Proboscidea louisianica (P. Miller) Thellung |
MARTYNIACEAE |
| Prosartes trachycarpa S. Watson |
UVULARIACEAE |
| Prunella vulgaris L. |
LAMIACEAE |
| Prunus americana H. Marshall |
ROSACEAE |
| Psathyrostachys juncea (Fischer) Nevski |
POACEAE |
| Pseudocymopterus montanus (A. Gray) Coulter & Rose |
APIACEAE |
| Pseudognaphalium canescens (De Candolle) W. A. Weber |
ASTERACEAE |
| Pseudognaphalium stramineum (Humboldt, Bonpland & Kunth) W. A. Weber |
ASTERACEAE |
| Pseudognaphalium viscosum (HBK) W. A. Weber |
ASTERACEAE |
| Pseudostellaria jamesiana (Torrey) Weber & Hartman |
ALSINACEAE |
| Pseudotsuga menziesii (Mirbel) Franco |
PINACEAE |
| Psilochenia atribarba (Heller) W. A. Weber |
ASTERACEAE |
| Psilochenia occidentalis (Nutt.) Weber |
ASTERACEAE |
| Psilochenia runcinata (James ex Torrey) Löve & Löve |
ASTERACEAE |
| Psoralidium argophyllum (Pursh) Rydberg |
FABACEAE |
| Psoralidium tenuiflorum (Pursh) Rydberg |
FABACEAE |
| Psychrophila leptosepala (De Candolle) W. A. Weber |
HELLEBORACEAE |
| Pteridium aquilinum (L.) Kuhn |
DENNSTAEDTIACEAE |
| Pterogonum alatum (Torrey) Gross |
POLYGONACEAE |
| Pterospora andromedea Nuttall |
MONOTROPACEAE |
| Puccinellia airoides Watson & Coulter |
POACEAE |
| Pulsatilla patens (L.) P. Miller ssp multifida (Pritzel) Zamels |
RANUNCULACEAE |
| Purshia stansburiana (Torrey) Henrickson |
ROSACEAE |
| Purshia tridentata (Pursh) De Candolle |
ROSACEAE |
| Pyrola chlorantha Swartz |
PYROLACEAE |
| Pyrola minor L. |
PYROLACEAE |
| Pyrola picta J. E. Smith |
PYROLACEAE |
| Pyrola rotundifolia L. ssp asarifolia (Michaux) Löve |
PYROLACEAE |
| Quercus borealis Michaux |
FAGACEAE |
| Quercus gambelii Nuttall |
FAGACEAE |
| Quincula lobata (Torrey) Rafinesque |
SOLANACEAE |
| Ranunculus abortivus L. ssp acrolasius (Fernald) Kapoor & Löve |
RANUNCULACEAE |
| Ranunculus acriformis A. Gray |
RANUNCULACEAE |
| Ranunculus adoneus A. Gray |
RANUNCULACEAE |
| Ranunculus alismifolius Geyer ex Bentham var montanus S. Watson |
RANUNCULACEAE |
| Ranunculus eschscholtzii Schlechtendal |
RANUNCULACEAE |
| Ranunculus glaberrimus Hooker var ellipticus Greene |
RANUNCULACEAE |
| Ranunculus hyperboreus Rottboel ssp intertextus (Greene) Kapoor & Löve |
RANUNCULACEAE |
| Ranunculus inamoenus Greene |
RANUNCULACEAE |
| Ranunculus macounii Britton |
RANUNCULACEAE |
| Ranunculus pedatifidus J. E. Smith |
RANUNCULACEAE |
| Ranunculus pygmaeus Wahlenberg |
RANUNCULACEAE |
| Ranunculus repens L. |
RANUNCULACEAE |
| Ranunculus reptans L. var ovalis Torrey & Gray |
RANUNCULACEAE |
| Raphanus sativus L. |
BRASSICACEAE |
| Ratibida columnifera (Nuttall) Wooton & Standley |
ASTERACEAE |
| Rayjacksonia annua (Rydberg) R. L. Hartman & M. A. Lane |
ASTERACEAE |
| Reseda lutea L. |
RESEDACEAE |
| Reynoutria japonica Houttuyn |
POLYGONACEAE |
| Rhamnus cathartica L. |
RHAMNACEAE |
| Rheum rhaponticum L. |
POLYGONACEAE |
| Rhinanthus minor L. ssp borealis (Sterneck) Löve |
SCROPHULARIACEAE |
| Rhodiola integrifolia Rafinesque |
CRASSULACEAE |
| Rhus aromatica Aiton ssp trilobata (Nuttall ex Torrey & Gray) W. A. Weber |
ANACARDIACEAE |
| Rhus glabra L. |
ANACARDIACEAE |
| Ribes aureum Pursh |
GROSSULARIACEAE |
| Ribes cereum Douglas |
GROSSULARIACEAE |
| Ribes coloradense Coville |
GROSSULARIACEAE |
| Ribes divaricatum Douglas |
GROSSULARIACEAE |
| Ribes inerme Rydberg |
GROSSULARIACEAE |
| Ribes lacustre (Persoon) Poiret |
GROSSULARIACEAE |
| Ribes montigenum McClatchie |
GROSSULARIACEAE |
| Ribes odoratum Wendland |
GROSSULARIACEAE |
| Robinia neomexicana A. Gray |
FABACEAE |
| Robinia pseudo-acacia L. |
FABACEAE |
| Rorippa curvipes Greene var alpina (S. Watson) Stuckey |
BRASSICACEAE |
| Rorippa palustris (L.) Besser |
BRASSICACEAE |
| Rorippa palustris (L.) Besser ssp hispida (Desvaux) Jonsell |
BRASSICACEAE |
| Rorippa sinuata (Nuttall in Torrey & Gray) A. S. Hitchcock |
BRASSICACEAE |
| Rorippa sphaerocarpa (A. Gray) Britton |
BRASSICACEAE |
| Rorippa sylvestris (L.) Besser |
BRASSICACEAE |
| Rorippa teres (Michaux) Stuckey |
BRASSICACEAE |
| Rosa arkansana T. C. Porter |
ROSACEAE |
| Rosa rubiginosa L. |
ROSACEAE |
| Rosa sayi Schweinitz |
ROSACEAE |
| Rosa woodsii Lindley |
ROSACEAE |
| Rotala ramosior (L.) Koehne |
LYTHRACEAE |
| Rubacer parviflorum (Nuttall) Rydberg |
ROSACEAE |
| Rubus discolor Weihe & Nees |
ROSACEAE |
| Rubus idaeus L. ssp melanolasius (Dieck) Focke |
ROSACEAE |
| Rubus laciniatus Willdenow |
ROSACEAE |
| Rudbeckia ampla A. Nelson |
ASTERACEAE |
| Rudbeckia hirta L. |
ASTERACEAE |
| Rudbeckia triloba L. |
ASTERACEAE |
| Rumex aquaticus L. ssp occidentalis (S. Watson) Hultén |
POLYGONACEAE |
| Rumex crispus L. |
POLYGONACEAE |
| Rumex maritimus L. ssp fueginus (Philippi) Hultén |
POLYGONACEAE |
| Rumex obtusifolius L. |
POLYGONACEAE |
| Rumex stenophyllus Ledebour |
POLYGONACEAE |
| Rumex triangulivalvis (Danser) Rechinger f. |
POLYGONACEAE |
| Rumex venosus Pursh |
POLYGONACEAE |
| Ruppia cirrhosa (Petagna) Grande ssp occidentalis (S. Watson) Löve & Löve |
RUPPIACEAE |
| Rydbergia grandiflora (Torrey & Gray) Greene |
ASTERACEAE |
| Sabina scopulorum (Sargent) Rydberg |
CUPRESSACEAE |
| Sabina virginiana (L.) Antoine |
CUPRESSACEAE |
| Sagina caespitosa (J. Vahl) Lange |
ALSINACEAE |
| Sagittaria cuneata Sheldon |
ALISMATACEAE |
| Sagittaria latifolia Willdenow |
ALISMATACEAE |
| Salix alba x fragilis |
SALICACEAE |
| Salix amygdaloides Andersson |
SALICACEAE |
| Salix arctica Pallas ssp petraea (Andersson) Löve et al. |
SALICACEAE |
| Salix bebbiana Sargent |
SALICACEAE |
| Salix brachycarpa Nuttall |
SALICACEAE |
| Salix drummondiana Barratt |
SALICACEAE |
| Salix exigua Nuttall |
SALICACEAE |
| Salix exigua Nuttall ssp exigua |
SALICACEAE |
| Salix fragilis L. |
SALICACEAE |
| Salix geyeriana Andersson |
SALICACEAE |
| Salix glauca L. var villosa Andersson |
SALICACEAE |
| Salix irrorata Andersson |
SALICACEAE |
| Salix lasiandra Bentham var caudata (Nuttall) Sudworth |
SALICACEAE |
| Salix ligulifolia (Ball ex C. K. Schneider) Ball ex E. C. Smith |
SALICACEAE |
| Salix monticola Bebb in Coulter |
SALICACEAE |
| Salix planifolia Pursh |
SALICACEAE |
| Salix purpurea L. |
SALICACEAE |
| Salix reticulata L. ssp nivalis (Hooker) Löve et al. |
SALICACEAE |
| Salix scouleriana Barratt ex Hooker |
SALICACEAE |
| Salix serissima (L. H. Bailey) Fernald |
SALICACEAE |
| Salix wolfii Bebb |
SALICACEAE |
| Salsola australis R. Brown |
CHENOPODIACEAE |
| Salsola collina Pallas |
CHENOPODIACEAE |
| Salvia aethiopis L. |
LAMIACEAE |
| Salvia azurea Michaux & Lamarck var grandiflora Bentham |
LAMIACEAE |
| Salvia pratensis L. |
LAMIACEAE |
| Salvia reflexa Hornemann |
LAMIACEAE |
| Salvia sclarea L. |
LAMIACEAE |
| Sambucus canadensis L. |
CAPRIFOLIACEAE |
| Sambucus microbotrys Rydberg |
CAPRIFOLIACEAE |
| Sanicula marilandica L. |
APIACEAE |
| Saponaria ocymoides L. |
CARYOPHYLLACEAE |
| Saponaria officinalis L. |
CARYOPHYLLACEAE |
| Saxifraga cernua L. |
SAXIFRAGACEAE |
| Saxifraga hyperborea R. Brown ssp debilis (Engelmann ex A. Gray) Löve et al. |
SAXIFRAGACEAE |
| Saxifraga rivularis L. |
SAXIFRAGACEAE |
| Schedonnardus paniculatus (Nuttall) Trelease |
POACEAE |
| Schizachne purpurascens (Torrey) Swallen |
POACEAE |
| Schizachyrium scoparium (Michaux) Nash |
POACEAE |
| Schoenoplectus acutus (Mühlenberg) Löve & Löve |
CYPERACEAE |
| Schoenoplectus lacustris (L.) Palla ssp creber (Fernald) Löve & Löve |
CYPERACEAE |
| Schoenoplectus pungens (M. Vahl) Palla |
CYPERACEAE |
| Schoenoplectus validus (Vahl) Löve & Löve |
CYPERACEAE |
| Scirpus microcarpus J. & K. Presl |
CYPERACEAE |
| Scirpus pallidus (Britton) Fernald |
CYPERACEAE |
| Scirpus pendulus Muhlenberg |
CYPERACEAE |
| Scrophularia lanceolata Pursh |
SCROPHULARIACEAE |
| Scutellaria brittonii T. C. Porter |
LAMIACEAE |
| Scutellaria galericulata L. var epilobiifolia (Hamilton) Jordal |
LAMIACEAE |
| Secale cereale L. |
POACEAE |
| Securigera varia (L.) Lassen |
FABACEAE |
| Selaginella densa Rydberg |
SELAGINELLACEAE |
| Selaginella mutica D. C. Eaton |
SELAGINELLACEAE |
| Selaginella scopulorum Maxon |
SELAGINELLACEAE |
| Selaginella standleyi Maxon |
SELAGINELLACEAE |
| Selaginella underwoodii Hieronymus |
SELAGINELLACEAE |
| Selaginella weatherbiana Tryon |
SELAGINELLACEAE |
| Senecio atratus Greene |
ASTERACEAE |
| Senecio crassulus A. Gray |
ASTERACEAE |
| Senecio eremophilus Richardson ssp kingii (Rydberg) Douglas & R.-Douglas |
ASTERACEAE |
| Senecio fremontii Torrey & Gray |
ASTERACEAE |
| Senecio fremontii Torrey & Gray ssp blitoides (Greene) W. A. Weber |
ASTERACEAE |
| Senecio integerrimus Nuttall |
ASTERACEAE |
| Senecio rapifolius Nuttall |
ASTERACEAE |
| Senecio serra Hooker |
ASTERACEAE |
| Senecio spartioides Torrey & Gray |
ASTERACEAE |
| Senecio triangularis Hooker |
ASTERACEAE |
| Senecio vulgaris L. |
ASTERACEAE |
| Senecio wootonii Greene |
ASTERACEAE |
| Seriphidium canum (Pursh) W. A. Weber |
ASTERACEAE |
| Seriphidium tridentatum (Nuttall) W. A. Weber |
ASTERACEAE |
| Seriphidium vaseyanum (Rydberg) W. A. Weber |
ASTERACEAE |
| Setaria glauca (L.) P. Beauvois |
POACEAE |
| Setaria italica (L.) P. Beauvois |
POACEAE |
| Setaria verticillata (L.) P. Beauvois |
POACEAE |
| Setaria viridis (L.) P. Beauvois |
POACEAE |
| Shepherdia argentea (Pursh) Nuttall |
ELAEAGNACEAE |
| Shepherdia canadensis (L.) Nuttall |
ELAEAGNACEAE |
| Sibbaldia procumbens L. |
ROSACEAE |
| Sidalcea candida A. Gray |
MALVACEAE |
| Sidalcea neomexicana A. Gray |
MALVACEAE |
| Silene acaulis (L.) L. ssp subacaulescens (F. N. Williams) Hitchcock & Maguire |
CARYOPHYLLACEAE |
| Silene antirrhina L. |
CARYOPHYLLACEAE |
| Silene csereii Baumgartner |
CARYOPHYLLACEAE |
| Silene noctiflora L. |
CARYOPHYLLACEAE |
| Silene scouleri Hooker ssp hallii (S. Watson) Hitchcock & Maguire |
CARYOPHYLLACEAE |
| Sinapis arvensis L. |
BRASSICACEAE |
| Sisymbrium altissimum L. |
BRASSICACEAE |
| Sisymbrium austriacum Jacquin |
BRASSICACEAE |
| Sisymbrium loeselii L. |
BRASSICACEAE |
| Sisymbrium officinale (L.) Scopoli |
BRASSICACEAE |
| Sisyrinchium idahoense Bicknell var occidentale (Bicknell) D. Henderson |
IRIDACEAE |
| Sisyrinchium montanum Greene |
IRIDACEAE |
| Smilax lasioneuron Hooker |
SMILACACEAE |
| Solanum americanum P. Miller |
SOLANACEAE |
| Solanum carolinense L. |
SOLANACEAE |
| Solanum dulcamara L. |
SOLANACEAE |
| Solanum elaeagnifolium Cavanilles |
SOLANACEAE |
| Solanum jamesii Torrey |
SOLANACEAE |
| Solanum physalifolium Rusby var nitidibaccatum (Bitter) Edmonds |
SOLANACEAE |
| Solanum rostratum Dunal |
SOLANACEAE |
| Solanum triflorum Nuttall |
SOLANACEAE |
| Solidago canadensis L. |
ASTERACEAE |
| Solidago gigantea Aiton |
ASTERACEAE |
| Solidago missouriensis Nuttall |
ASTERACEAE |
| Solidago mollis Bartling |
ASTERACEAE |
| Solidago multiradiata Aiton |
ASTERACEAE |
| Solidago nana Nuttall |
ASTERACEAE |
| Solidago nemoralis Aiton |
ASTERACEAE |
| Solidago nemoralis Aiton var longipetiolata (Mackenzie & Bush) Palmer & Steyermark |
ASTERACEAE |
| Solidago simplex Humboldt, Bonpland & Kunth var. nana (A. Gray) G.S. Ringius |
ASTERACEAE |
| Solidago simplex Humboldt, Bonpland & Kunth var. simplex |
ASTERACEAE |
| Solidago speciosa Nuttall var pallida T. C. Porter |
ASTERACEAE |
| Solidago velutina De Candolle |
ASTERACEAE |
| Sonchus arvensis L. |
ASTERACEAE |
| Sonchus asper (L.) J. Hill |
ASTERACEAE |
| Sonchus oleraceus L. |
ASTERACEAE |
| Sorbus scopulina Greene |
ROSACEAE |
| Sorghastrum avenaceum (Michaux) Nash |
POACEAE |
| Sorghum halepense (L.) Persoon |
POACEAE |
| Sparganium angustifolium Michaux |
SPARGANIACEAE |
| Sparganium minimum Wallroth |
SPARGANIACEAE |
| Spartina pectinata Link |
POACEAE |
| Spergularia media (L.) K. Presl |
ALSINACEAE |
| Spergularia rubra (L.) J. & K. Presl |
ALSINACEAE |
| Sphaeralcea coccinea (Pursh) Rydberg |
MALVACEAE |
| Sphenopholis obtusata (Michaux) Scribner |
POACEAE |
| Spiranthes diluvialis Sheviak |
ORCHIDACEAE |
| Spiranthes romanzoffiana Chamisso |
ORCHIDACEAE |
| Sporobolus airoides (Torrey) Torrey |
POACEAE |
| Sporobolus asper (Michaux) Kunth |
POACEAE |
| Sporobolus cryptandrus (Torrey) A. Gray |
POACEAE |
| Sporobolus heterolepis (A. Gray) A. Gray |
POACEAE |
| Stachys palustris L. ssp pilosa (Nuttall) Epling |
LAMIACEAE |
| Stanleya pinnata (Pursh) Britton |
BRASSICACEAE |
| Stellaria borealis Bigelow |
ALSINACEAE |
| Stellaria calycantha (Ledebour) Bongard |
ALSINACEAE |
| Stellaria graminea L. |
ALSINACEAE |
| Stellaria longifolia Mühlenberg ex Willdenow |
ALSINACEAE |
| Stellaria longipes Goldie |
ALSINACEAE |
| Stellaria umbellata Turczaninov ex Karilin & Kirilow |
ALSINACEAE |
| Stenactis strigosa (Mühlenberg ex Willdenow) De Candolle |
ASTERACEAE |
| Stenosiphon linifolius (Nuttall in F. James) Heynhold |
ONAGRACEAE |
| Stephanomeria pauciflora (Torrey) A. Nelson |
ASTERACEAE |
| Streptopus fassettii Löve & Löve |
UVULARIACEAE |
| Stuckenia pectinata (L.) Börner |
POTAMOGETONACEAE |
| Suaeda calceoliformis (Hooker) Moquin |
CHENOPODIACEAE |
| Suaeda nigra (Rafinesque) Macbride |
CHENOPODIACEAE |
| Suckleya suckleyana (Torrey) Rydberg |
CHENOPODIACEAE |
| Swertia perennis L. |
GENTIANACEAE |
| Swida sericea (L.) Holub |
CORNACEAE |
| Symphoricarpos albus (L.) S. F. Blake |
CAPRIFOLIACEAE |
| Symphoricarpos occidentalis Hooker |
CAPRIFOLIACEAE |
| Symphoricarpos orbiculatus Moench. |
CAPRIFOLIACEAE |
| Talinum parviflorum Nuttall ex Torrey & Gray |
PORTULACACEAE |
| Tamarix ramosissima Ledebour |
TAMARICACEAE |
| Tanacetum parthenium (L.) Schultz-Bipontinus |
ASTERACEAE |
| Tanacetum vulgare L. |
ASTERACEAE |
| Taraxacum eriophorum Rydberg |
ASTERACEAE |
| Taraxacum officinale G. H. Weber ex Wiggers |
ASTERACEAE |
| Taraxacum ovinum Greene |
ASTERACEAE |
| Taraxacum scopulorum (A. Gray) Rydberg |
ASTERACEAE |
| Teloxys botrys (L.) W. A. Weber |
CHENOPODIACEAE |
| Tetraneuris acaulis (Pursh) Greene |
ASTERACEAE |
| Tetraneuris acaulis (Pursh) Greene var caespitosa A. Nelson |
ASTERACEAE |
| Tetraneuris brevifolia Greene |
ASTERACEAE |
| Teucrium canadense L. ssp occidentale (A. Gray) W. A. Weber |
LAMIACEAE |
| Thalictrum alpinum L. |
THALICTRACEAE |
| Thalictrum dasycarpum Fischer & Ave-Lallemant |
THALICTRACEAE |
| Thalictrum fendleri Engelmann ex A. Gray |
THALICTRACEAE |
| Thalictrum sparsiflorum Turczaninov ex Fischer & Ave-Lallemant |
THALICTRACEAE |
| Thelesperma megapotamicum (Sprengel) Kuntze |
ASTERACEAE |
| Thermopsis divaricarpa A. Nelson |
FABACEAE |
| Thermopsis rhombifolia (Nuttall ex Pursh) Richardson |
FABACEAE |
| Thinopyrum intermedium (Host) Barkworth & Dewey |
POACEAE |
| Thinopyrum ponticum (Podpera) Barkworth & Dewey |
POACEAE |
| Thlaspi arvense L. |
BRASSICACEAE |
| Tithymalus brachyceras (Engelmann) Small |
EUPHORBIACEAE |
| Tithymalus myrsinites (L.) J. Hill |
EUPHORBIACEAE |
| Tithymalus peplus (L.) J. Hill |
EUPHORBIACEAE |
| Tithymalus spathulatus (Lamarck) W. A. Weber |
EUPHORBIACEAE |
| Tithymalus uralensis (Fischer ex Link) Prokhanov |
EUPHORBIACEAE |
| Tonestus pygmaeus (Torrey & Gray) A. Nelson |
ASTERACEAE |
| Torreyochloa pauciflora (J. Presl in K. Presl) Church |
POACEAE |
| Townsendia grandiflora Nuttall |
ASTERACEAE |
| Townsendia hookeri Beaman |
ASTERACEAE |
| Toxicodendron rydbergii (Small ex Rydberg) Greene |
ANACARDIACEAE |
| Toxicoscordion venenosum (S. Watson) Rydberg |
MELANTHIACEAE |
| Tradescantia occidentalis (Britton) Smyth |
COMMELINACEAE |
| Tradescantia occidentalis (Britton) Smyth var scopulorum (Rose) Anderson & Woodson |
COMMELINACEAE |
| Tragia ramosa (Müller-Argoviensis in De Candolle) Torrey |
EUPHORBIACEAE |
| Tragopogon dubius Scopoli ssp major (Jacquin) Vollmann |
ASTERACEAE |
| Tragopogon dubius X porrifolius Authority |
ASTERACEAE |
| Tragopogon porrifolius L. |
ASTERACEAE |
| Tragopogon pratensis L. |
ASTERACEAE |
| Tribulus terrestris L. |
ZYGOPHYLLACEAE |
| Tridens muticus (Torrey) Nash var elongatus (Buckley) Shinners |
POACEAE |
| Trifolium dasyphyllum Torrey & Gray |
FABACEAE |
| Trifolium fragiferum L. |
FABACEAE |
| Trifolium hybridum L. |
FABACEAE |
| Trifolium nanum Torrey |
FABACEAE |
| Trifolium parryi A. Gray |
FABACEAE |
| Trifolium pratense L. |
FABACEAE |
| Trifolium repens L. |
FABACEAE |
| Triglochin palustris L. |
JUNCAGINACEAE |
| Trimorpha elongata (Ledebour) Vierhapper |
ASTERACEAE |
| Trimorpha lonchophylla (Hooker) Nesom |
ASTERACEAE |
| Triodanis holzingeri McVaugh |
CAMPANULACEAE |
| Triodanis leptocarpa (Nuttall) Nieuwland |
CAMPANULACEAE |
| Triodanis perfoliata (L.) Nieuwland |
CAMPANULACEAE |
| Trisetum montanum Vasey |
POACEAE |
| Trisetum spicatum (L.) Richter ssp congdonii (Scribner & Merrill) Hultén |
POACEAE |
| Trisetum spicatum (L.) Richter ssp. alaskanum (Nash) Hultén |
POACEAE |
| Trisetum wolfii Vasey in Rothrock |
POACEAE |
| Triticum aestivum L. |
POACEAE |
| Trollius albiflorus (A. Gray) Rydberg |
HELLEBORACEAE |
| Tryphane rubella (Wahlenberg) Reichenbach |
ALSINACEAE |
| Turritis glabra L. |
BRASSICACEAE |
| Typha angustifolia L. |
TYPHACEAE |
| Typha latifolia L. |
TYPHACEAE |
| Ulmus pumila L. |
ULMACEAE |
| Urtica gracilis Aiton ssp gracilis |
URTICACEAE |
| Utricularia macrorhiza LeConte |
LENTIBULARIACEAE |
| Utricularia minor L. |
LENTIBULARIACEAE |
| Vaccaria pyramidata Medicus |
CARYOPHYLLACEAE |
| Vaccinium cespitosum Michaux |
ERICACEAE |
| Vaccinium myrtillus L. ssp oreophilum (Rydberg) Löve et al. |
ERICACEAE |
| Vaccinium scoparium Leiberg ex Coville |
ERICACEAE |
| Vahlodea atropurpurea (Wahlenberg) E. Fries ssp latifolia (Hooker) Porsild |
POACEAE |
| Valeriana capitata Pallas ex Link ssp acutiloba (Rydberg) F. G. Meyer |
VALERIANACEAE |
| Valeriana edulis Nuttall |
VALERIANACEAE |
| Veratrum tenuipetalum Heller |
MELANTHIACEAE |
| Verbascum blattaria L. |
SCROPHULARIACEAE |
| Verbascum phlomoides L. |
SCROPHULARIACEAE |
| Verbascum pterocaulon Franchet |
SCROPHULARIACEAE |
| Verbascum thapsus L. |
SCROPHULARIACEAE |
| Verbena bracteata Lagasca & Rodriguez |
VERBENACEAE |
| Verbena hastata L. |
VERBENACEAE |
| Verbena stricta Ventenat |
VERBENACEAE |
| Veronica americana Schweinitz ex Bentham |
SCROPHULARIACEAE |
| Veronica anagallis-aquatica L. |
SCROPHULARIACEAE |
| Veronica catenata Pennell |
SCROPHULARIACEAE |
| Veronica nutans Bongard |
SCROPHULARIACEAE |
| Veronica peregrina L. ssp xalapensis (Humboldt,_Bonpland, & Kunth) Pennell |
SCROPHULARIACEAE |
| Veronicastrum serpyllifolium L. ssp humifusum (Dickson) W. A. Weber |
SCROPHULARIACEAE |
| Vexibia nuttalliana (B. Turner) W. A. Weber |
FABACEAE |
| Viburnum edule (Michaux) Rafinesque |
CAPRIFOLIACEAE |
| Viburnum lantana L. |
CAPRIFOLIACEAE |
| Viburnum lentago L. |
CAPRIFOLIACEAE |
| Viburnum opulus L. |
CAPRIFOLIACEAE |
| Vicia americana Mühlenberg |
FABACEAE |
| Vicia americana Mühlenberg var minor Hooker |
FABACEAE |
| Vicia ludoviciana Nuttall |
FABACEAE |
| Vicia ludoviciana Nuttall var texana (Torrey & Gray) Shinners |
FABACEAE |
| Vicia villosa Roth |
FABACEAE |
| Viola adunca J. E. Smith |
VIOLACEAE |
| Viola biflora L. |
VIOLACEAE |
| Viola kitaibeliana Roemer & Schultes var rafinesquei (Greene) Fernald |
VIOLACEAE |
| Viola labradorica Schrank |
VIOLACEAE |
| Viola macloskeyi Lloyd ssp pallens (Banks ex De Candolle) M. S. Baker |
VIOLACEAE |
| Viola nuttallii Pursh |
VIOLACEAE |
| Viola odorata L. |
VIOLACEAE |
| Viola pedatifida G. Don |
VIOLACEAE |
| Viola praemorsa Douglas ex Lindley ssp major (Hooker) M. S. Baker |
VIOLACEAE |
| Viola renifolia A. Gray var brainerdii (Greene) Fernald |
VIOLACEAE |
| Viola rydbergii Greene |
VIOLACEAE |
| Viola scopulorum (A. Gray) Greene |
VIOLACEAE |
| Viola sororia Willdenow |
VIOLACEAE |
| Viola sororia Willdenow var affinis (Le_Conte) McKinney |
VIOLACEAE |
| Viola sororia Willdenow var. sororia |
VIOLACEAE |
| Virgulaster ascendens (Lindley ex Hooker) Semple |
ASTERACEAE |
| Virgulus ericoides (L.) Reveal & Keener |
ASTERACEAE |
| Virgulus falcatus (Lindley) Reveal & Keener |
ASTERACEAE |
| Virgulus fendleri (A. Gray) Reveal & Keener |
ASTERACEAE |
| Virgulus novae-angliae (L.) Reveal & Keener |
ASTERACEAE |
| Viticella orientalis (L.) W. A. Weber |
RANUNCULACEAE |
| Vitis riparia Michaux ssp riparia |
VITACEAE |
| Vulpia octoflora (Walter) Rydberg |
POACEAE |
| Woodsia neomexicana Windham |
DRYOPTERIDACEAE |
| Woodsia oregana D.C. Eaton ssp cathcartiana (Robbinson) Windham |
DRYOPTERIDACEAE |
| Woodsia scopulina D. C. Eaton |
DRYOPTERIDACEAE |
| Wyethia arizonica A. Gray |
ASTERACEAE |
| Xanthium strumarium L. |
ASTERACEAE |
| Ximenesia encelioides Cavanilles |
ASTERACEAE |
| Yucca glauca Nuttall in Fraser |
AGAVACEAE |
| Zannichellia palustris L. |
ZANNICHELLIACEAE |
