882 Records
| Citation | Family Name |
| Abies bifolia A. Murray |
PINACEAE |
| Abronia argillosa Welsh & Goodrich |
NYCTAGINACEAE |
| Abronia elliptica A. Nelson |
NYCTAGINACEAE |
| Abronia nana S. Watson |
NYCTAGINACEAE |
| Acer glabrum Torrey |
ACERACEAE |
| Acetosella vulgaris (K. Koch) Fourreau |
POLYGONACEAE |
| Achillea lanulosa Nuttall |
ASTERACEAE |
| Achnatherum aridum (Jones) Barkworth |
POACEAE |
| Achnatherum hymenoides (Roemer & Schultes) Barkworth |
POACEAE |
| Achnatherum lettermanii (Vasey) Barkworth |
POACEAE |
| Achnatherum nelsonii (Scribner) Barkworth |
POACEAE |
| Achnatherum pinetorum (Jones) Barkworth |
POACEAE |
| Aconitum columbianum Nuttall ex Torrey & Gray var. columbianum |
HELLEBORACEAE |
| Acosta maculosa (L.) Holub |
ASTERACEAE |
| Acrolasia albicaulis (Douglas ex Hooker) Rydberg |
LOASACEAE |
| Acrolasia dispersa (S. Watson) Davidson |
LOASACEAE |
| Acrolasia gracilis Rydberg |
LOASACEAE |
| Acrolasia humilis Osterhout |
LOASACEAE |
| Acroptilon repens (L.) De Candolle |
ASTERACEAE |
| Actaea rubra (Aiton) Willdenow ssp arguta (Nuttall in Torrey & Gray) Hultén |
HELLEBORACEAE |
| Adenolinum lewisii (Pursh) Löve & Löve |
LINACEAE |
| Adiantum capillus-veneris L. |
PTERIDACEAE |
| Agastache urticifolia (Bentham) Kuntze |
LAMIACEAE |
| Ageratina herbacea (A. Gray) King & Robinson |
ASTERACEAE |
| Agoseris aurantiaca (Hooker) Greene |
ASTERACEAE |
| Agoseris glauca (Pursh) Rafinesque |
ASTERACEAE |
| Agoseris glauca (Pursh) Rafinesque var laciniata (D. C. Eaton) Smiley |
ASTERACEAE |
| Agropyron cristatum (L.) Gaertner ssp desertorum (Fischer) Löve |
POACEAE |
| Agropyron desertorum Fischer ex Link |
POACEAE |
| Agropyron mongolicum Keng |
POACEAE |
| Agropyron pectiniforme Roemer & Schultes |
POACEAE |
| Agrostis gigantea Roth |
POACEAE |
| Agrostis scabra Willdenow |
POACEAE |
| Aletes anisatus (A. Gray) Theobald & Tseng |
APIACEAE |
| Aletes eastwoodiae (Coulter & Rose) W. A. Weber |
APIACEAE |
| Aliciella haydenii (A. Gray) J.M. Porter |
POLEMONIACEAE |
| Aliciella pentstemonoides (M.E. Jones) J.M. Porter |
POLEMONIACEAE |
| Alisma triviale Pursh |
ALISMATACEAE |
| Allionia incarnata L. |
NYCTAGINACEAE |
| Allium acuminatum Hooker |
ALLIACEAE |
| Allium geyeri S. Watson |
ALLIACEAE |
| Allium macropetalum Rydberg |
ALLIACEAE |
| Allium textile Nelson & Macbride |
ALLIACEAE |
| Alnus incana (L.) Moench ssp tenuifolia (Nuttall) Breitung |
BETULACEAE |
| Alopecurus aequalis Sobolewski |
POACEAE |
| Alyssum desertorum Stapf |
BRASSICACEAE |
| Alyssum parviflorum M. Bieberstein var. micranthum (C. A. Meyer in Fisher & Meyer) Dorn |
BRASSICACEAE |
| Amaranthus albus L. |
AMARANTHACEAE |
| Amaranthus retroflexus L. |
AMARANTHACEAE |
| Amelanchier alnifolia Nuttall |
ROSACEAE |
| Amelanchier utahensis Koehne |
ROSACEAE |
| Amerosedum lanceolatum (Torrey) Löve & Löve |
CRASSULACEAE |
| Androsace occidentalis Pursh |
PRIMULACEAE |
| Androsace septentrionalis L. |
PRIMULACEAE |
| Androstephium breviflorum S. Watson |
ALLIACEAE |
| Anisantha tectorum (L.) Nevski |
POACEAE |
| Anotites menziesii (Hooker) Greene |
CARYOPHYLLACEAE |
| Antennaria corymbosa E. Nelson |
ASTERACEAE |
| Antennaria dimorpha (Nuttall) Torrey & Gray |
ASTERACEAE |
| Antennaria parvifolia Nuttall |
ASTERACEAE |
| Antennaria pulcherrima (Hooker) Greene ssp anaphaloides (Rydberg) W. A. Weber |
ASTERACEAE |
| Antennaria rosea Greene |
ASTERACEAE |
| Anthemis cotula L. |
ASTERACEAE |
| Anticlea elegans (Pursh) Rydberg |
MELANTHIACEAE |
| Aphyllon fasciculatum (Nuttall) Torrey & Gray |
OROBANCHACEAE |
| Aphyllon uniflorum (L.) Torrey & Gray |
OROBANCHACEAE |
| Apocynum androsaemifolium L. |
APOCYNACEAE |
| Apocynum cannabinum L. |
APOCYNACEAE |
| Apocynum medium Greene |
APOCYNACEAE |
| Aquilegia barnebyi Munz |
HELLEBORACEAE |
| Aquilegia coerulea James ex Torrey |
HELLEBORACEAE |
| Aquilegia elegantula Greene |
HELLEBORACEAE |
| Aquilegia micrantha Eastwood |
HELLEBORACEAE |
| Arabis hirsuta (L.) Scopoli var pycnocarpa (Hopkins) Rollins |
BRASSICACEAE |
| Arceuthobium divaricatum Engelmann |
VISCACEAE |
| Arctium minus (J. Hill) Bernhardi |
ASTERACEAE |
| Arctostaphylos patula Greene fma platyphylla (A. Gray) P. V. Wells |
ERICACEAE |
| Argyrochosma fendleri (Kunze) Windham |
PTERIDACEAE |
| Aristida purpurea Nuttall |
POACEAE |
| Aristida purpurea Nuttall var longiseta (Steudel) Vasey |
POACEAE |
| Arnica chamissonis Lessing ssp foliosa (Nuttall) Maguire |
ASTERACEAE |
| Arnica cordifolia Hooker |
ASTERACEAE |
| Arnica parryi A. Gray |
ASTERACEAE |
| Artemisia bigelovii A. Gray |
ASTERACEAE |
| Artemisia carruthii Wood {ex} Carruth |
ASTERACEAE |
| Artemisia frigida Willdenow |
ASTERACEAE |
| Artemisia ludoviciana Nuttall ssp incompta (Nuttall) Keck |
ASTERACEAE |
| Artemisia ludoviciana Nuttall ssp ludoviciana |
ASTERACEAE |
| Artemisia ludoviciana Nuttall ssp mexicana (Willdenow) Keck |
ASTERACEAE |
| Asclepias asperula (Decaisne) Woodson ssp asperula |
ASCLEPIADACEAE |
| Asclepias cryptoceras S. Watson |
ASCLEPIADACEAE |
| Asclepias speciosa Torrey |
ASCLEPIADACEAE |
| Asclepias subverticillata (A. Gray) Vail |
ASCLEPIADACEAE |
| Asclepias tuberosa L. ssp terminalis Woodson |
ASCLEPIADACEAE |
| Asparagus officinalis L. |
ASPARAGACEAE |
| Aster laevis L. |
ASTERACEAE |
| Aster lanceolatus Willdenow ssp hesperius (A. Gray) Semple & Chmielewski |
ASTERACEAE |
| Astragalus amphioxys A. Gray |
FABACEAE |
| Astragalus amphioxys A. Gray var vespertinus (Sheldon) Jones |
FABACEAE |
| Astragalus argophyllus Nuttall ex Torrey & Gray var martinii Jones |
FABACEAE |
| Astragalus asclepiadoides Jones |
FABACEAE |
| Astragalus calycosus Torrey ex S. Watson var scaposus Jones |
FABACEAE |
| Astragalus chamaeleuce A. Gray |
FABACEAE |
| Astragalus coltonii Jones var moabensis Jones |
FABACEAE |
| Astragalus convallarius Greene |
FABACEAE |
| Astragalus eastwoodiae Jones |
FABACEAE |
| Astragalus flavus Nuttall |
FABACEAE |
| Astragalus flexuosus (Hooker) G. Don var diehlii (Jones) Barneby |
FABACEAE |
| Astragalus haydenianus A. Gray |
FABACEAE |
| Astragalus lentiginosus Douglas ex Hooker |
FABACEAE |
| Astragalus lentiginosus Douglas ex Hooker var palans (Jones) Jones |
FABACEAE |
| Astragalus linifolius Osterhout |
FABACEAE |
| Astragalus lonchocarpus Torrey |
FABACEAE |
| Astragalus megacarpus (Nuttall) A. Gray |
FABACEAE |
| Astragalus miser Douglas in Hooker var oblongifolius (Rydberg) Cronquist |
FABACEAE |
| Astragalus missouriensis Nuttall var missouriensis |
FABACEAE |
| Astragalus mollissimus Torrey var thompsoniae (S. Watson) Barneby |
FABACEAE |
| Astragalus naturitensis Payson |
FABACEAE |
| Astragalus nuttallianus De Candolle |
FABACEAE |
| Astragalus nuttallianus De Candolle var micranthemiformis Barneby |
FABACEAE |
| Astragalus oöphorus Jones |
FABACEAE |
| Astragalus pattersonii A. Gray |
FABACEAE |
| Astragalus praelongus Sheldon |
FABACEAE |
| Astragalus rafaelensis Jones |
FABACEAE |
| Astragalus scopulorum T. C. Porter in Porter & Coulter |
FABACEAE |
| Astragalus sesquiflorus S. Watson |
FABACEAE |
| Astragalus wetherillii Jones |
FABACEAE |
| Astragalus wingatanus S. Watson |
FABACEAE |
| Athyrium filix-femina (L.) Roth ex Mertens |
DRYOPTERIDACEAE |
| Atriplex canescens (Pursh) Nuttall |
CHENOPODIACEAE |
| Atriplex confertifolia (Torrey & Frémont) S. Watson |
CHENOPODIACEAE |
| Atriplex corrugata S. Watson |
CHENOPODIACEAE |
| Atriplex gardneri (Moquin) Standley |
CHENOPODIACEAE |
| Atriplex powellii S. Watson |
CHENOPODIACEAE |
| Atriplex rosea L. |
CHENOPODIACEAE |
| Atriplex wolfii S. Watson |
CHENOPODIACEAE |
| Baccharis salicina Torrey & Gray |
ASTERACEAE |
| Bahia dissecta (A. Gray) Britton |
ASTERACEAE |
| Balsamorhiza sagittata (Pursh) Nuttall |
ASTERACEAE |
| Barbarea vulgaris R. Brown |
BRASSICACEAE |
| Bassia sieversiana (Pallas) W. A. Weber |
CHENOPODIACEAE |
| Berberis fendleri A. Gray |
BERBERIDACEAE |
| Besseya ritteriana (Eastwood) Rydberg |
SCROPHULARIACEAE |
| Betula fontinalis Sargent |
BETULACEAE |
| Bistorta bistortoides (Pursh) Small |
POLYGONACEAE |
| Blepharoneuron tricholepis (Torrey) Nash |
POACEAE |
| Boechera crandallii (B. L. Robinson) W. A. Weber |
BRASSICACEAE |
| Boechera divaricarpa (A. Nelson) Löve & Löve |
BRASSICACEAE |
| Boechera drummondii (A. Gray) Löve & Löve |
BRASSICACEAE |
| Boechera fendleri (S. Watson) W. A. Weber |
BRASSICACEAE |
| Boechera gunnisoniana (Rollins) W. A. Weber |
BRASSICACEAE |
| Boechera lignifera (A. Nelson) W. A. Weber |
BRASSICACEAE |
| Boechera oxylobula (Greene) W. A. Weber |
BRASSICACEAE |
| Boechera pallidifolia (Rollins) Weber ined. |
BRASSICACEAE |
| Boechera perennans (S. Watson) W. A. Weber |
BRASSICACEAE |
| Boechera pulchra (Jones ex S. Watson) W. A. Weber ssp pallens (Jones) W. A. Weber |
BRASSICACEAE |
| Boechera retrofracta (R. Graham) Löve & Löve |
BRASSICACEAE |
| Boechera selbyi (Rydberg) W. A. Weber |
BRASSICACEAE |
| Bouteloua curtipendula (Michaux) Torrey var curtipendula |
POACEAE |
| Breea arvensis (L.) Lessing |
ASTERACEAE |
| Brickellia californica (Torrey & Gray) A. Gray |
ASTERACEAE |
| Brickellia grandiflora (Hooker) Nuttall |
ASTERACEAE |
| Brickellia longifolia S. Watson |
ASTERACEAE |
| Brickellia microphylla (Nuttall) A. Gray ssp scabra (A. Gray) W. A. Weber |
ASTERACEAE |
| Brickellia oblongifolia Nuttall |
ASTERACEAE |
| Brickellia rosmarinifolia (Ventenat) W. A. Weber ssp chlorolepis (Wooton & Standley) W. A. Weber |
ASTERACEAE |
| 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 |
| Bromus commutatus Schrader |
POACEAE |
| Bromus japonicus Thunberg |
POACEAE |
| Calamagrostis scopulorum Jones |
POACEAE |
| Callitriche heterophylla Pursh emend. Darby |
CALLITRICHACEAE |
| Calochortus flexuosus S. Watson |
CALOCHORTACEAE |
| Calochortus gunnisonii S. Watson |
CALOCHORTACEAE |
| Calochortus nuttallii Torrey var. nuttallii |
CALOCHORTACEAE |
| Calylophus lavandulifolius (Torrey & Gray) Raven |
ONAGRACEAE |
| Camelina microcarpa Andrzejowski ex De Candolle |
BRASSICACEAE |
| Camelina rumelica Velenovsky |
BRASSICACEAE |
| Camissonia scapoidea (Torrey & Gray) Raven |
ONAGRACEAE |
| Campanula rotundifolia L. |
CAMPANULACEAE |
| Capsella bursa-pastoris (L.) Medicus |
BRASSICACEAE |
| Cardaria chalepensis (L.) Handel-Mazzetti |
BRASSICACEAE |
| Cardaria draba (L.) Desvaux |
BRASSICACEAE |
| Carduus nutans L. ssp macrolepis (Peterman) Kazmi |
ASTERACEAE |
| Carex aurea Nuttall |
CYPERACEAE |
| Carex douglasii F. Boott in Hooker |
CYPERACEAE |
| Carex egglestonii Mackenzie |
CYPERACEAE |
| Carex emoryi Dewey in Torrey |
CYPERACEAE |
| Carex geyeri F. Boott |
CYPERACEAE |
| Carex hystericina Mühlenberg ex Willdenow |
CYPERACEAE |
| Carex lanuginosa Michaux |
CYPERACEAE |
| Carex lenticularis Michaux var lipocarpa (Holm) L. Standley |
CYPERACEAE |
| Carex microptera Mackenzie |
CYPERACEAE |
| Carex occidentalis L. H. Bailey |
CYPERACEAE |
| Carex pachystachya Chamisso ex Steudel |
CYPERACEAE |
| Carex parryana Dewey |
CYPERACEAE |
| Carex petasata Dewey |
CYPERACEAE |
| Carex praegracilis F. Boott |
CYPERACEAE |
| Carex rossii F. Boott in Hooker |
CYPERACEAE |
| Carex utriculata F. Boott |
CYPERACEAE |
| Carex vallicola Dewey |
CYPERACEAE |
| Carex vulpinoidea Michaux |
CYPERACEAE |
| Castilleja chromosa A. Nelson |
SCROPHULARIACEAE |
| Castilleja linariifolia Bentham in De Candolle |
SCROPHULARIACEAE |
| Castilleja miniata Douglas ex Hooker |
SCROPHULARIACEAE |
| Castilleja scabrida Eastwood |
SCROPHULARIACEAE |
| Castilleja sulphurea Rydberg |
SCROPHULARIACEAE |
| Ceanothus fendleri A. Gray |
RHAMNACEAE |
| Ceanothus velutinus Douglas ex Hooker |
RHAMNACEAE |
| Celtis reticulata Torrey |
ULMACEAE |
| Cerastium fontanum Baumgartner |
ALSINACEAE |
| Ceratocephala orthoceras De Candolle |
RANUNCULACEAE |
| Ceratochloa carinata (Hooker & Arnott) Tutin |
POACEAE |
| Cercocarpus intricatus S. Watson |
ROSACEAE |
| Cercocarpus montanus Rafinesque |
ROSACEAE |
| Chaenactis douglasii (Hooker) Hooker & Arnott |
ASTERACEAE |
| Chaenactis stevioides Hooker & Arnott |
ASTERACEAE |
| Chaetopappa ericoides (A. Gray) Nesom |
ASTERACEAE |
| Chamaechaenactis scaposa (Eastwood) Rydberg |
ASTERACEAE |
| Chamaesyce fendleri (Torrey & Gray) Small |
EUPHORBIACEAE |
| Chamaesyce glyptosperma (Engelmann) Small |
EUPHORBIACEAE |
| Chamaesyce serpyllifolia (Persoon) Small |
EUPHORBIACEAE |
| Cheilanthes féei T. Moore |
PTERIDACEAE |
| Chenopodium atrovirens Rydberg |
CHENOPODIACEAE |
| Chenopodium capitatum (L.) Ascherson |
CHENOPODIACEAE |
| Chenopodium fremontii S. Watson |
CHENOPODIACEAE |
| Chenopodium glaucum L. |
CHENOPODIACEAE |
| Chondrosum gracile Humboldt, Bonpland, & Kunth |
POACEAE |
| Chorispora tenella (Pallas) De Candolle |
BRASSICACEAE |
| Chrysothamnus depressus Nuttall |
ASTERACEAE |
| Chrysothamnus linifolius Greene |
ASTERACEAE |
| Chrysothamnus nauseosus (Pallas ex Pursh) Britton |
ASTERACEAE |
| Chrysothamnus nauseosus (Pallas ex Pursh) Britton ssp graveolens (Nuttall) Piper |
ASTERACEAE |
| Chrysothamnus parryi (A. Gray) Greene ssp parryi |
ASTERACEAE |
| Chrysothamnus viscidiflorus (Hooker) Nuttall |
ASTERACEAE |
| Chrysothamnus viscidiflorus (Hooker) Nuttall ssp lanceolatus (Nuttall) Hall & Clements |
ASTERACEAE |
| Chrysothamnus viscidiflorus (Hooker) Nuttall ssp viscidiflorus |
ASTERACEAE |
| Cicuta douglasii (De Candolle) Coulter & Rose |
APIACEAE |
| Ciliaria austromontana (Wiegand) W. A. Weber |
SAXIFRAGACEAE |
| Cirsium calcareum (Jones) Wooton & Standley |
ASTERACEAE |
| Cirsium centaureae (Rydberg) K. Schumann |
ASTERACEAE |
| Cirsium eatonii (A. Gray) B. L. Robinson |
ASTERACEAE |
| Cirsium neomexicanum A. Gray |
ASTERACEAE |
| Cirsium perplexans (Rydberg) Petrak |
ASTERACEAE |
| Cirsium tracyi (Rydberg) Petrak |
ASTERACEAE |
| Cirsium vulgare (Savi) Tenore |
ASTERACEAE |
| Claytonia lanceolata Pursh |
PORTULACACEAE |
| Clematis ligusticifolia Nuttall ex Torrey & Gray |
RANUNCULACEAE |
| Cleome lutea Hooker |
CAPPARACEAE |
| Cleome serrulata Pursh |
CAPPARACEAE |
| Cleomella palmerana Jones |
CAPPARACEAE |
| Collinsia parviflora Douglas in Lindley |
SCROPHULARIACEAE |
| Collomia linearis Nuttall |
POLEMONIACEAE |
| Comandra umbellata (L.) Nuttall ssp pallida (A. De Candolle) Piehl |
SANTALACEAE |
| Conioselinum scopulorum (A. Gray) Coulter & Rose |
APIACEAE |
| Convolvulus arvensis L. |
CONVOLVULACEAE |
| Conyza canadensis (L.) Cronquist |
ASTERACEAE |
| Corallorhiza maculata Rafinesque |
ORCHIDACEAE |
| Corallorhiza wisteriana Conrad |
ORCHIDACEAE |
| Cordylanthus wrightii A. Gray |
SCROPHULARIACEAE |
| Coriflora hirsutissima (Pursh) W. A. Weber |
RANUNCULACEAE |
| Corydalis aurea Willdenow |
FUMARIACEAE |
| Corydalis curvisiliqua Engelmann subsp. occidentalis (Engelmann ex A. Gray) W. A. Weber |
FUMARIACEAE |
| Coryphantha missouriensis (Sweet) Britton & Rose |
CACTACEAE |
| Coryphantha vivipara (Nuttall) Britton & Rose |
CACTACEAE |
| Coryphantha vivipara (Nuttall) Britton & Rose var radiosa (Engelmann) Backeberg |
CACTACEAE |
| Crataegus erythropoda Ashe |
ROSACEAE |
| Crataegus rivularis Nuttall |
ROSACEAE |
| Crataegus saligna Greene |
ROSACEAE |
| Critesion glaucum (Steudel) Löve |
POACEAE |
| Critesion jubatum (L.) Nevski |
POACEAE |
| Critesion pusillum (Nuttall) Löve |
POACEAE |
| Cryptantha crassisepala (Torrey & Gray) Greene var elachantha I. M. Johnston |
BORAGINACEAE |
| Cryptantha fendleri (A. Gray) Greene |
BORAGINACEAE |
| Cryptantha gracilis Osterhout |
BORAGINACEAE |
| Cryptantha minima Rydberg |
BORAGINACEAE |
| Cryptantha pterocarya (Torrey) Greene |
BORAGINACEAE |
| Cryptantha watsonii (A. Gray) Greene |
BORAGINACEAE |
| Cyclachaena xanthifolia (Nuttall) Fresenius |
ASTERACEAE |
| Cylindropyrum cylindricum (Host) Löve |
POACEAE |
| Cymopterus acaulis (Pursh) Rafinesque |
APIACEAE |
| Cymopterus bulbosus A. Nelson |
APIACEAE |
| Cymopterus fendleri A. Gray |
APIACEAE |
| Cymopterus planosus (Osterhout) Mathias |
APIACEAE |
| Cymopterus purpurascens (A. Gray) Jones |
APIACEAE |
| Cymopterus purpureus S. Watson |
APIACEAE |
| Cystopteris fragilis (L.) Bernhardi |
DRYOPTERIDACEAE |
| Cystopteris reevesiana Lellinger |
DRYOPTERIDACEAE |
| Dactylis glomerata L. |
POACEAE |
| Danthonia intermedia Vasey |
POACEAE |
| Delphinium andersonii A. Gray var scaposum (Greene) Welsh |
HELLEBORACEAE |
| Delphinium barbeyi (Huth) Huth |
HELLEBORACEAE |
| Delphinium nuttallianum Pritzel ex Walpers |
HELLEBORACEAE |
| Descurainia incana (Bernhardi ex Fischer & Meyer) Dorn |
BRASSICACEAE |
| Descurainia incisa (Engelmann ex A. Gray) Britton subsp. filipes (A. Gray) Rollins |
BRASSICACEAE |
| Descurainia incisa (Engelmann ex A. Gray) Britton subsp. incisa |
BRASSICACEAE |
| Descurainia pinnata (Walter) Britton |
BRASSICACEAE |
| Descurainia pinnata (Walter) Britton subsp. halictorum (Cockerell) Detling |
BRASSICACEAE |
| Descurainia sophia (L.) Webb ex Prantl |
BRASSICACEAE |
| Distegia involucrata (Banks ex Sprengel) Cockerell |
CAPRIFOLIACEAE |
| Dodecatheon pulchellum (Rafinesque) Merrill |
PRIMULACEAE |
| Draba albertina Greene |
BRASSICACEAE |
| Draba cuneifolia Nuttall ex Torrey & Gray |
BRASSICACEAE |
| Draba nemorosa L. |
BRASSICACEAE |
| Draba reptans (Lamarck) Fernald |
BRASSICACEAE |
| Draba spectabilis Greene |
BRASSICACEAE |
| Dracocephalum parviflorum Nuttall |
LAMIACEAE |
| Drymocallis arguta (Pursh) Rydberg |
ROSACEAE |
| Dryopteris filix-mas (L.) Schott |
DRYOPTERIDACEAE |
| Dugaldia hoopesii (A. Gray) Rydberg |
ASTERACEAE |
| Dyssodia papposa (Ventenat) A. S. Hitchcock |
ASTERACEAE |
| Echinocereus triglochidiatus Engelmann |
CACTACEAE |
| Echinocereus triglochidiatus Engelmann var gonacanthus (Engelmann & Bigelow) Boissevain & Davidson |
CACTACEAE |
| Echinocereus triglochidiatus Engelmann var melanacanthus (Engelmann) L. Benson |
CACTACEAE |
| Echinocereus triglochidiatus Engelmann var. inermis (Schumann) G. K. Arp comb. nov. |
CACTACEAE |
| Eleocharis bolanderi A. Gray |
CYPERACEAE |
| Eleocharis palustris (L.) Roemer & Schultes |
CYPERACEAE |
| 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 trachycaulus (Link) Gould |
POACEAE |
| Elymus trachycaulus (Link) Gould ex Shinners ssp bakeri (E. Nelson) Löve |
POACEAE |
| Elytrigia repens (L.) Nevski |
POACEAE |
| Ephedra torreyana S. Watson |
EPHEDRACEAE |
| Ephedra viridis Coville var. viridis |
EPHEDRACEAE |
| Epilobium brachycarpum K. Presl |
ONAGRACEAE |
| Epilobium ciliatum Rafinesque |
ONAGRACEAE |
| Epilobium halleanum Haussknecht |
ONAGRACEAE |
| Epipactis gigantea Douglas ex Hooker |
ORCHIDACEAE |
| Equisetum arvense L. |
EQUISETACEAE |
| Eremogone congesta (Nuttall ex Torrey & Gray) Ikonnikov |
ALSINACEAE |
| Eremogone fendleri (A. Gray) Ikonnikov |
ALSINACEAE |
| Eremogone kingii (S. Watson) Ikonnikov ssp uintahensis (A. Nelson) W. A. Weber |
ALSINACEAE |
| Eremopyrum triticeum (Gaertner) Nevski |
POACEAE |
| Erigeron compositus Pursh |
ASTERACEAE |
| Erigeron concinnus (H. & A.) T. & G. |
ASTERACEAE |
| Erigeron concinnus (H. & A.) T. & G. var. condensatus D.C. Eaton in S. Wats |
ASTERACEAE |
| Erigeron coulteri T. C. Porter |
ASTERACEAE |
| Erigeron divergens Torrey & Gray |
ASTERACEAE |
| Erigeron eatonii A. Gray var eatonii |
ASTERACEAE |
| Erigeron elatior (A. Gray) Greene |
ASTERACEAE |
| Erigeron engelmannii A. Nelson |
ASTERACEAE |
| Erigeron flagellaris A. Gray |
ASTERACEAE |
| Erigeron kachinensis Welsh & Moore |
ASTERACEAE |
| Erigeron pulcherrimus Heller |
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 utahensis A. Gray |
ASTERACEAE |
| Erigeron utahensis A. Gray var sparsifolius (Eastwood) Cronquist |
ASTERACEAE |
| Eriogonum cernuum Nuttall |
POLYGONACEAE |
| Eriogonum corymbosum Bentham in A. De Candolle var corymbosum |
POLYGONACEAE |
| Eriogonum corymbosum Bentham in A. De Candolle var orbiculatum (S. Stokes) Reveal & Brotherson |
POLYGONACEAE |
| Eriogonum flavum Nuttall subsp. flavum |
POLYGONACEAE |
| Eriogonum gordonii Bentham |
POLYGONACEAE |
| Eriogonum inflatum Torrey & Frémont |
POLYGONACEAE |
| Eriogonum lonchophyllum Torrey & Gray |
POLYGONACEAE |
| Eriogonum microthecum Nuttall |
POLYGONACEAE |
| Eriogonum microthecum Nuttall var simpsonii (Bentham in A. De Candolle) Reveal |
POLYGONACEAE |
| Eriogonum pelinophilum Reveal |
POLYGONACEAE |
| Eriogonum racemosum Nuttall |
POLYGONACEAE |
| Eriogonum umbellatum Torrey |
POLYGONACEAE |
| Eriogonum umbellatum Torrey var aureum (Gandoger) Reveal |
POLYGONACEAE |
| Erioneuron pilosum (Buckley) Nash |
POACEAE |
| Erodium cicutarium (L.) L'Heritier |
GENTIANACEAE |
| Erysimum capitatum (Douglas) Greene |
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 |
| Euthamia occidentalis Nuttall |
ASTERACEAE |
| Evolvulus nuttallianus Schultes |
CONVOLVULACEAE |
| Fendlera falcata Thornber in Woot. & Standl. |
HYDRANGEACEAE |
| Fendlera wrightii (Engelmann & A. Gray) Heller |
HYDRANGEACEAE |
| Fendlerella utahensis (S. Watson) Heller |
HYDRANGEACEAE |
| Festuca arizonica Vasey |
POACEAE |
| Festuca arundinacea Schreber |
POACEAE |
| Festuca idahoensis Elmer |
POACEAE |
| Festuca pratensis Hudson |
POACEAE |
| Festuca saximontana Rydberg |
POACEAE |
| Festuca thurberi Vasey in Rothrock |
POACEAE |
| Forestiera pubescens Nuttall |
OLEACEAE |
| Forsellesia meionandra (Koehne) Heller |
CROSSOSOMATACEAE |
| Fragaria vesca L. ssp bracteata (Heller) Staudt |
ROSACEAE |
| Fragaria virginiana P. Miller ssp glauca (S. Watson) Staudt |
ROSACEAE |
| Frasera speciosa Douglas ex Grisebach |
GENTIANACEAE |
| Fraxinus anomala Torrey ex S. Watson |
OLEACEAE |
| Fritillaria atropurpurea Nuttall |
LILIACEAE |
| Gaillardia pinnatifida Torrey |
ASTERACEAE |
| Galium bifolium S. Watson |
RUBIACEAE |
| Galium coloradoënse W. F. Wight |
RUBIACEAE |
| Galium septentrionale Roemer & Schultes |
RUBIACEAE |
| Galium spurium L. |
RUBIACEAE |
| Galium trifidum L. ssp subbiflorum (Wiegand) Puff |
RUBIACEAE |
| Gastrolychnis drummondii (Hooker) Löve & Löve |
CARYOPHYLLACEAE |
| Gaura mollis James |
ONAGRACEAE |
| Gayophytum decipiens Lewis & Szweykowski |
ONAGRACEAE |
| Gayophytum diffusum Torrey & Gray ssp parviflorum Lewis & Szweykowski |
ONAGRACEAE |
| Gayophytum racemosum Torrey & Gray |
ONAGRACEAE |
| Gentianella heterosepala (Engelmann) Holub |
GENTIANACEAE |
| Geranium richardsonii Fischer & Trautvetter |
GERANIACEAE |
| Gilia clokeyi Mason |
POLEMONIACEAE |
| Gilia ophthalmoides Brand |
POLEMONIACEAE |
| Gilia sinuata Douglas ex Bentham |
POLEMONIACEAE |
| Glaux maritima L. var angustifolia Boivin |
PRIMULACEAE |
| Glyceria striata (Lamarck) A. S. Hitchcock var stricta (Scribner) Fernald |
POACEAE |
| Glycyrrhiza lepidota Pursh |
FABACEAE |
| Gnaphalium uliginosum L. |
ASTERACEAE |
| Grammica campestris (Yuncker) Hadaç & Chrtek |
CUSCUTACEAE |
| Gratiola neglecta Torrey |
SCROPHULARIACEAE |
| Grindelia fastigiata Greene |
ASTERACEAE |
| Grindelia squarrosa (Pursh) Dunal |
ASTERACEAE |
| Grindelia squarrosa (Pursh) Dunal var serrulata (Rydberg) Steyermark |
ASTERACEAE |
| Gutierrezia microcephala (De Candolle) A. Gray |
ASTERACEAE |
| Gutierrezia sarothrae (Pursh) Britton & Rusby |
ASTERACEAE |
| Hackelia floribunda (Lehmann) I. M. Johnston |
BORAGINACEAE |
| Halerpestes cymbalaria (Pursh) Greene ssp saximontana (Fernald) Moldenke |
RANUNCULACEAE |
| Halogeton glomeratus (Bieberstein) C. A. Meyer |
CHENOPODIACEAE |
| Hecatonia scelerata (L.) Fourreau |
RANUNCULACEAE |
| Hedeoma drummondii Bentham |
LAMIACEAE |
| Hedysarum boreale Nuttall |
FABACEAE |
| Hedysarum occidentale Greene |
FABACEAE |
| Helianthella microcephala (A. Gray) A. Gray |
ASTERACEAE |
| Helianthella quinquenervis (Hooker) A. Gray |
ASTERACEAE |
| Helianthus annuus L. |
ASTERACEAE |
| Heliomeris multiflora Nuttall |
ASTERACEAE |
| Heliomeris multiflora Nuttall var multiflora |
ASTERACEAE |
| Heracleum sphondylium L. ssp montanum (Schleicher ex Gaudin) Briquet in Schinz & Thellung |
APIACEAE |
| Hesperostipa comata (Trinius & Ruprecht) Barkworth |
POACEAE |
| Hesperostipa neomexicana (Thurber) Barkworth |
POACEAE |
| Heterotheca pumila (Greene) Semple |
ASTERACEAE |
| Heterotheca villosa (Pursh) Shinners |
ASTERACEAE |
| Heuchera parvifolia Nuttall ex Torrey & Gray |
SAXIFRAGACEAE |
| Heuchera parvifolia Nuttall ex Torrey & Gray var. parvifolia |
SAXIFRAGACEAE |
| Hilaria jamesii (Torrey) Bentham |
POACEAE |
| Hippochaete hyemalis (L.) Bruhin |
EQUISETACEAE |
| Hippochaete laevigata (A. Braun) Farwell |
EQUISETACEAE |
| Hippochaete x ferrissii (Clute) |
EQUISETACEAE |
| Holodiscus discolor (Pursh) Maximovicz |
ROSACEAE |
| Holodiscus dumosus (Nuttall ex Hooker) Heller |
ROSACEAE |
| Humulus lupulus L. ssp americanus (Nuttall) Löve & Löve |
CANNABACEAE |
| Hydrophyllum capitatum Douglas ex Bentham |
HYDROPHYLLACEAE |
| Hydrophyllum fendleri (A. Gray) Heller |
HYDROPHYLLACEAE |
| Hymenopappus filifolius Hooker var cinereus (Rydberg) I. M. Johnston |
ASTERACEAE |
| Hymenopappus filifolius Hooker var luteus (Nuttall) B. Turner |
ASTERACEAE |
| Hymenopappus filifolius Hooker var megacephalus B. Turner |
ASTERACEAE |
| Hypericum formosum Humboldt, Bonpland, & Kunth |
HYPERICACEAE |
| Ipomopsis aggregata (Pursh) V. Grant |
POLEMONIACEAE |
| Ipomopsis aggregata (Pursh) V. Grant ssp aggregata |
POLEMONIACEAE |
| Ipomopsis aggregata (Pursh) V. Grant ssp formosissima (Greene) Wherry |
POLEMONIACEAE |
| Ipomopsis congesta (Hooker) V. Grant |
POLEMONIACEAE |
| Ipomopsis congesta (Hooker) V. Grant ssp congesta |
POLEMONIACEAE |
| Ipomopsis longiflora (Torrey) V. Grant |
POLEMONIACEAE |
| Ipomopsis polycladon Torrey |
POLEMONIACEAE |
| Ipomopsis pumila (Nuttall) V. Grant |
POLEMONIACEAE |
| Ipomopsis tenuituba (Rydberg) V. Grant |
POLEMONIACEAE |
| Iva axillaris Pursh |
ASTERACEAE |
| Juncus arcticus Willdenow ssp ater (Rydberg) Hultén |
JUNCACEAE |
| Juncus bufonius L. |
JUNCACEAE |
| Juncus confusus Coville |
JUNCACEAE |
| Juncus dudleyi Wiegand |
JUNCACEAE |
| Juncus interior Wiegand |
JUNCACEAE |
| Juncus longistylis Torrey |
JUNCACEAE |
| Juncus saximontanus A. Nelson |
JUNCACEAE |
| Juncus tenuis Willdenow |
JUNCACEAE |
| Juncus torreyi Coville |
JUNCACEAE |
| Juncus tracyi Rydberg |
JUNCACEAE |
| Juniperus communis L. ssp alpina (J. E. Smith) Celakovsky |
CUPRESSACEAE |
| Kochia americana S. Watson |
CHENOPODIACEAE |
| Koeleria macrantha (Ledebour) Schultes |
POACEAE |
| Krascheninnikovia lanata (Pursh) Meeuse & Smit |
CHENOPODIACEAE |
| Lactuca serriola L. |
ASTERACEAE |
| Lappula marginata (Bieberstein) Guerke |
BORAGINACEAE |
| Lappula redowskii (Hornemann) Greene |
BORAGINACEAE |
| Lathyrus eucosmus Butters & St. John |
FABACEAE |
| Lathyrus leucanthus Rydberg |
FABACEAE |
| Lemna minor L. |
LEMNACEAE |
| Lepidium alyssoides A. Gray var. alyssoides |
BRASSICACEAE |
| Lepidium crenatum (Greene) Rydb. |
BRASSICACEAE |
| Lepidium densiflorum Schrader |
BRASSICACEAE |
| Lepidium lasiocarpum Nuttall |
BRASSICACEAE |
| Lepidium montanum Nuttall |
BRASSICACEAE |
| Lepidium montanum Nuttall var jonesii (Rydberg) C. L. Hitchcock |
BRASSICACEAE |
| Lepidium montanum Nuttall var tenellum (L. Williams) C. L. Hitchcock |
BRASSICACEAE |
| Lepidium perfoliatum L. |
BRASSICACEAE |
| Lepidium ramosissimum A. Nelson |
BRASSICACEAE |
| Leptodactylon watsonii (A. Gray) Rydberg |
POLEMONIACEAE |
| Lesquerella ludoviciana (Nuttall) S. Watson |
BRASSICACEAE |
| Lesquerella rectipes Wooton & Standley |
BRASSICACEAE |
| Lesquerella vicina Anderson, Reveal & Rollins |
BRASSICACEAE |
| Leucopoa kingii (S. Watson) W. A. Weber |
POACEAE |
| Leymus cinereus (Scribner & Merrill) Löve |
POACEAE |
| Leymus salina (Jones) Löve |
POACEAE |
| Ligularia bigelovii (A. Gray) W. A. Weber var hallii (A. Gray) W. A. Weber |
ASTERACEAE |
| Ligularia pudica (Greene) W. A. Weber |
ASTERACEAE |
| Ligusticum porteri Coulter & Rose |
APIACEAE |
| Limosella aquatica L. |
SCROPHULARIACEAE |
| Linanthus harknessii (Curran) Greene var septentrionalis (Mason) Jepson & Bailey |
POLEMONIACEAE |
| Linaria vulgaris P. Miller |
SCROPHULARIACEAE |
| Lithophragma glabrum Nuttall |
SAXIFRAGACEAE |
| Lithophragma tenellum Nuttall |
SAXIFRAGACEAE |
| Lithospermum incisum Lehmann |
BORAGINACEAE |
| Lithospermum ruderale Douglas ex Lehmann |
BORAGINACEAE |
| Lomatium concinnum (Osterhout) Mathias |
APIACEAE |
| Lomatium dissectum (Nuttall) Mathias & Constance var multifidum (Nuttall) Mathias & Constance |
APIACEAE |
| Lomatium grayi Coulter & Rose |
APIACEAE |
| Lomatium triternatum (Pursh) Coulter & Rose ssp platycarpum (Torrey) Cronquist |
APIACEAE |
| Lupinus ammophilus Greene |
FABACEAE |
| Lupinus argenteus Pursh |
FABACEAE |
| Lupinus brevicaulis S. Watson |
FABACEAE |
| Lupinus caudatus Kellogg |
FABACEAE |
| Lupinus crassus Payson |
FABACEAE |
| Lupinus parviflorus Nuttall |
FABACEAE |
| Lupinus prunophilus Jones |
FABACEAE |
| Luzula spicata (L.) De Candolle |
JUNCACEAE |
| Lycium barbarum L. |
SOLANACEAE |
| Lycopus americanus Mühlenberg ex W. Barton |
LAMIACEAE |
| Lygodesmia grandiflora (Nuttall) Torrey & Gray |
ASTERACEAE |
| Machaeranthera canescens (Pursh) A. Gray |
ASTERACEAE |
| Machaeranthera gracilis (Nuttall) Shinners |
ASTERACEAE |
| Machaeranthera grindelioides (Nuttall) Shinners |
ASTERACEAE |
| Machaeranthera parviflora A. Gray |
ASTERACEAE |
| Machaeranthera pinnatifida (Hooker) Shinners |
ASTERACEAE |
| Machaeranthera tanacetifolia (Humboldt, Bonpland, & Kunth) Nees |
ASTERACEAE |
| Madia glomerata Hooker |
ASTERACEAE |
| Mahonia fremontii (Torrey) Fedde |
BERBERIDACEAE |
| Mahonia repens (Lindley) G. Don |
BERBERIDACEAE |
| Maianthemum amplexicaule (Nuttall) W. A. Weber |
CONVALLARIACEAE |
| Maianthemum stellatum (L.) Link |
CONVALLARIACEAE |
| Malacothrix sonchoides (Nuttall) Torrey & Gray |
ASTERACEAE |
| Malacothrix torreyi A. Gray |
ASTERACEAE |
| Malcolmia africana (L.) R. Brown |
BRASSICACEAE |
| Malva neglecta Wallroth |
MALVACEAE |
| Marrubium vulgare L. |
LAMIACEAE |
| Medicago lupulina L. |
FABACEAE |
| Medicago sativa L. |
FABACEAE |
| Melandrium dioicum (L.) Cosson & Germain |
CARYOPHYLLACEAE |
| Melica porteri Scribner |
POACEAE |
| Melilotus albus Medicus |
FABACEAE |
| Melilotus officinale (L.) Pallas |
FABACEAE |
| Mentha arvensis L. |
LAMIACEAE |
| Mertensia brevistyla S. Watson |
BORAGINACEAE |
| Mertensia ciliata (James ex Torrey) G. Don |
BORAGINACEAE |
| Mertensia franciscana Heller |
BORAGINACEAE |
| Mesynium puberulum (Engelmann in A. Gray) W. A. Weber |
LINACEAE |
| Microseris nutans (Geyer ex Hooker) Schultz-Bipontinus |
ASTERACEAE |
| Microsteris gracilis (Douglas ex Hooker) Greene ssp humilis (Greene) V. Grant |
POLEMONIACEAE |
| Mimulus eastwoodiae Rydberg |
SCROPHULARIACEAE |
| Mimulus floribundus Douglas in Lindley |
SCROPHULARIACEAE |
| Mimulus glabratus Humboldt, Bonpland, & Kunth var utahensis Pennell |
SCROPHULARIACEAE |
| Mimulus rubellus A. Gray |
SCROPHULARIACEAE |
| Mirabilis glandulosa (Standley) W. A. Weber |
NYCTAGINACEAE |
| Mirabilis multiflora (Torrey) A. Gray |
NYCTAGINACEAE |
| Monarda fistulosa L. var menthifolia (R. Graham) Fernald |
LAMIACEAE |
| Monarda pectinata Nuttall |
LAMIACEAE |
| Monardella odoratissima Bentham |
LAMIACEAE |
| Monolepis nuttalliana (Schultes) Greene |
CHENOPODIACEAE |
| Monroa squarrosa (Nuttall) Torrey |
POACEAE |
| Muhlenbergia minutissima (Steudel) Swallen |
POACEAE |
| Muhlenbergia montana (Nuttall) A. S. Hitchcock |
POACEAE |
| Muhlenbergia racemosa (Michaux) Britton, Sterns, & Poggenberg |
POACEAE |
| Myosurus apetalus Gay |
RANUNCULACEAE |
| Myosurus cupulatus S. Watson |
RANUNCULACEAE |
| Myriophyllum sibiricum Komarov |
HALORAGACEAE |
| Navarretia breweri (A. Gray) Greene |
POLEMONIACEAE |
| Negundo aceroides (L.) Moench ssp interius (Britton & Shafer) Löve & Löve |
ACERACEAE |
| Nicotiana attenuata Torrey ex S. Watson |
SOLANACEAE |
| Nitrophila occidentalis (Moquin) S. Watson |
CHENOPODIACEAE |
| Noccaea montana (L.) F. K. Meyer |
BRASSICACEAE |
| Nuttallia cronquistii (Thompson & Prigge) W. A. Weber |
LOASACEAE |
| Nuttallia laciniata (Rydberg) Wooton & Standley |
LOASACEAE |
| Nuttallia marginata Osterhout |
LOASACEAE |
| Nuttallia multiflora (Nuttall) Greene |
LOASACEAE |
| Nuttallia pterosperma (Eastwood) Greene |
LOASACEAE |
| Nuttallia sanjuanensis Thompson & Zavortink |
LOASACEAE |
| Oenothera albicaulis Pursh |
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 caespitosa Nuttall ex Fraser ssp navajoensis W. L. Wagner et al. |
ONAGRACEAE |
| Oenothera coronopifolia Torrey & Gray |
ONAGRACEAE |
| Oenothera pallida Lindley ssp trichocalyx (Nuttall ex Torrey & Gray) Munz & Klein |
ONAGRACEAE |
| Oligosporus dracunculus (L.) Poljakov |
ASTERACEAE |
| Oligosporus dracunculus (L.) Poljakov ssp dracunculinus (S. Watson) W. A. Weber |
ASTERACEAE |
| Oligosporus pacificus (Nuttall) Poljakov |
ASTERACEAE |
| Opuntia fragilis (Nuttall) Haworth |
CACTACEAE |
| Opuntia macrorhiza Engelmann |
CACTACEAE |
| Opuntia phaeacantha Engelmann |
CACTACEAE |
| Opuntia phaeacantha Engelmann var camanchica (Engelmann & Bigelow) L. Benson |
CACTACEAE |
| Opuntia polyacantha Haworth |
CACTACEAE |
| Opuntia polyacantha Haworth var. polyacantha |
CACTACEAE |
| Oreobroma nevadensis (A. Gray) T. J. Howell |
PORTULACACEAE |
| Oreobroma pygmaea (A. Gray) T. J. Howell |
PORTULACACEAE |
| Oreocarya bakeri Greene |
BORAGINACEAE |
| Oreocarya flava A. Nelson |
BORAGINACEAE |
| Oreocarya flavoculata A. Nelson |
BORAGINACEAE |
| Oreocarya gypsophila comb. nov. ined. |
BORAGINACEAE |
| Oreocarya longiflora A. Nelson |
BORAGINACEAE |
| Oreocarya nitida Greene |
BORAGINACEAE |
| Oreocarya paradoxa A. Nelson |
BORAGINACEAE |
| Orobanche ludoviciana Nuttall |
OROBANCHACEAE |
| Orogenia linearifolia S. Watson |
APIACEAE |
| Orthocarpus luteus Nuttall |
SCROPHULARIACEAE |
| Orthocarpus purpureoalbus A. Gray |
SCROPHULARIACEAE |
| Osmorhiza depauperata Philippi |
APIACEAE |
| Osmorhiza occidentalis (Nuttall) Torrey |
APIACEAE |
| Oxybaphus linearis (Pursh) B. L. Robinson |
NYCTAGINACEAE |
| Oxyria digyna (L.) J. Hill |
POLYGONACEAE |
| Packera crocata (Rydberg) Weber & Löve |
ASTERACEAE |
| Packera dimorphophylla (Greene) Weber & Löve ssp intermedia (T. Barkley) Weber & Löve |
ASTERACEAE |
| Packera multilobata (Torrey & Gray ex A. Gray) Weber & Löve |
ASTERACEAE |
| Packera neomexicana (A. Gray) Weber & Löve |
ASTERACEAE |
| Padus virginiana (L.) P. Miller ssp melanocarpa (A. Nelson) W. A. Weber |
ROSACEAE |
| Panicum virgatum L. |
POACEAE |
| Parietaria pensylvanica Mühlenberg ex Willdenow |
URTICACEAE |
| Pascopyrum smithii (Rydberg) Löve |
POACEAE |
| Paxistima myrsinites (Pursh) Rafinesque |
CELASTRACEAE |
| Pedicularis bracteosa Bentham in Hooker ssp paysoniana (Pennell) W. A. Weber |
SCROPHULARIACEAE |
| Pedicularis centranthera A. Gray |
SCROPHULARIACEAE |
| Pedicularis procera A. Gray |
SCROPHULARIACEAE |
| Pedicularis racemosa Douglas ex Hooker ssp alba Pennell |
SCROPHULARIACEAE |
| Pediocactus simpsonii (Engelmann) Britton & Rose var minor (Engelmann) Cockerell |
CACTACEAE |
| Pediomelum aromaticum (Payson) W. A. Weber |
FABACEAE |
| Pediomelum megalanthum (Wooton & Standley) Rydberg |
FABACEAE |
| Penstemon barbatus (Cavanilles) Roth |
SCROPHULARIACEAE |
| Penstemon breviculus (Keck) Nisbet & Jackson |
SCROPHULARIACEAE |
| Penstemon caespitosus Nuttall |
SCROPHULARIACEAE |
| Penstemon comarrhenus A. Gray |
SCROPHULARIACEAE |
| Penstemon cyanocaulis Payson |
SCROPHULARIACEAE |
| Penstemon eatonii A. Gray |
SCROPHULARIACEAE |
| Penstemon eatonii A. Gray ssp undosus (Jones) Keck |
SCROPHULARIACEAE |
| Penstemon lentus Pennell |
SCROPHULARIACEAE |
| Penstemon moffatii Eastwood |
SCROPHULARIACEAE |
| Penstemon ophianthus Pennell |
SCROPHULARIACEAE |
| Penstemon retrorsus Payson ex Pennell |
SCROPHULARIACEAE |
| Penstemon strictus Bentham in De Candolle |
SCROPHULARIACEAE |
| Penstemon watsonii A. Gray |
SCROPHULARIACEAE |
| Pentaphylloides floribunda (Pursh) Löve |
ROSACEAE |
| Peraphyllum ramosissimum Nuttall ex Torrey & Gray |
ROSACEAE |
| Persicaria amphibia (L.) S. Gray |
POLYGONACEAE |
| Petradoria pumila (Nuttall) Greene |
ASTERACEAE |
| Petrophyton caespitosum (Nuttall) Rydberg |
ROSACEAE |
| Phacelia crenulata Torrey |
HYDROPHYLLACEAE |
| Phacelia splendens Eastwood |
HYDROPHYLLACEAE |
| Phalaroides arundinacea (L.) Rauschert |
POACEAE |
| Philadelphus microphyllus A. Gray |
HYDRANGEACEAE |
| Phleum commutatum Gaudin |
POACEAE |
| Phleum pratense L. |
POACEAE |
| Phlox austromontana Coville |
POLEMONIACEAE |
| Phlox hoodii Richardson |
POLEMONIACEAE |
| Phlox longifolia Nuttall |
POLEMONIACEAE |
| Phlox multiflora A. Nelson |
POLEMONIACEAE |
| Phoradendron juniperinum Engelmann |
VISCACEAE |
| Phragmites australis (Cavanilles) Trinius ex Steudel |
POACEAE |
| Physalis virginiana P. Miller |
SOLANACEAE |
| Physaria acutifolia Rydberg |
BRASSICACEAE |
| Physaria floribunda Rydberg |
BRASSICACEAE |
| Picea pungens Engelmann |
PINACEAE |
| Pinus contorta Douglas ex Loudon var latifolia Engelmann |
PINACEAE |
| Pinus edulis Engelmann |
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 eriopoda Torrey |
PLANTAGINACEAE |
| Plantago major L. |
PLANTAGINACEAE |
| Plantago patagonica Jacquin |
PLANTAGINACEAE |
| Platanthera aquilonis Sheviak |
ORCHIDACEAE |
| Platyschkuhria integrifolia (A. Gray) Rydberg var oblongifolia (A. Gray) Ellison |
ASTERACEAE |
| Pneumonanthe parryi (Engelmann) Greene |
GENTIANACEAE |
| Poa agassizensis Boivin & D. Löve |
POACEAE |
| Poa bulbosa L. |
POACEAE |
| Poa compressa L. |
POACEAE |
| Poa fendleriana (Steudel) Vasey |
POACEAE |
| Poa glaucifolia Scribner & Williams |
POACEAE |
| Poa juncifolia Scribner |
POACEAE |
| Poa nemoralis L. ssp interior (Rydberg) W. A. Weber |
POACEAE |
| Poa pratensis L. |
POACEAE |
| Poa reflexa Vasey & Scribner |
POACEAE |
| Poa secunda J. Presl in K. Presl |
POACEAE |
| Pocilla biloba (L.) W. A. Weber |
SCROPHULARIACEAE |
| Polemonium foliosissimum (A. Gray) A. Gray |
POLEMONIACEAE |
| Polemonium viscosum Nuttall |
POLEMONIACEAE |
| Polygala subspinosa S. Watson |
POLYGALACEAE |
| Polygonum arenastrum Boreau |
POLYGONACEAE |
| Polygonum douglasii Greene |
POLYGONACEAE |
| Polygonum polygaloides Meissner ssp kelloggii (Greene) Hickman |
POLYGONACEAE |
| Polypogon monspeliensis (L.) Desfontaines |
POACEAE |
| Populus acuminata Rydberg |
SALICACEAE |
| Populus angustifolia James |
SALICACEAE |
| Populus deltoides H. Marshall ssp wislizenii (S. Watson) Eckenwalder |
SALICACEAE |
| Populus tremuloides Michaux |
SALICACEAE |
| Potamogeton illinoensis Morong |
POTAMOGETONACEAE |
| Potentilla hippiana Lehmann |
ROSACEAE |
| Potentilla norvegica L. |
ROSACEAE |
| Potentilla pulcherrima Lehmann |
ROSACEAE |
| Potentilla pulcherrima x hippiana |
ROSACEAE |
| Prenanthella exigua (A. Gray) Rydberg |
ASTERACEAE |
| Prosartes trachycarpa S. Watson |
UVULARIACEAE |
| Prunella vulgaris L. |
LAMIACEAE |
| Psathyrostachys juncea (Fischer) Nevski |
POACEAE |
| Pseudocymopterus montanus (A. Gray) Coulter & Rose |
APIACEAE |
| Pseudoroegneria spicata (Pursh) Löve ssp inermis (Scribner & Smith) Löve |
POACEAE |
| Pseudostellaria jamesiana (Torrey) Weber & Hartman |
ALSINACEAE |
| Pseudotsuga menziesii (Mirbel) Franco |
PINACEAE |
| Psilochenia acuminata (Nuttall) W. A. Weber |
ASTERACEAE |
| Psilochenia atribarba (Heller) W. A. Weber |
ASTERACEAE |
| Psilochenia modocensis (Greene) W. A. Weber |
ASTERACEAE |
| Psilochenia occidentalis (Nutt.) Weber |
ASTERACEAE |
| Psilostrophe bakeri Greene |
ASTERACEAE |
| Psychrophila leptosepala (De Candolle) W. A. Weber |
HELLEBORACEAE |
| Pterogonum alatum (Torrey) Gross |
POLYGONACEAE |
| Pulsatilla patens (L.) P. Miller ssp multifida (Pritzel) Zamels |
RANUNCULACEAE |
| Purshia stansburiana (Torrey) Henrickson |
ROSACEAE |
| Purshia tridentata (Pursh) De Candolle |
ROSACEAE |
| Pyrrocoma crocea (A. Gray) Greene |
ASTERACEAE |
| Quercus gambelii Nuttall |
FAGACEAE |
| Quercus turbinella Greene |
FAGACEAE |
| Quercus undulata Torrey |
FAGACEAE |
| Ranunculus alismifolius Geyer ex Bentham var montanus S. Watson |
RANUNCULACEAE |
| Ranunculus glaberrimus Hooker var ellipticus Greene |
RANUNCULACEAE |
| Ranunculus inamoenus Greene |
RANUNCULACEAE |
| 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 inerme Rydberg |
GROSSULARIACEAE |
| Ribes leptanthum A. Gray |
GROSSULARIACEAE |
| Ribes wolfii Rothrock |
GROSSULARIACEAE |
| Robinia pseudo-acacia L. |
FABACEAE |
| Rorippa palustris (L.) Besser |
BRASSICACEAE |
| Rorippa teres (Michaux) Stuckey |
BRASSICACEAE |
| Rosa woodsii Lindley |
ROSACEAE |
| Rubus idaeus L. ssp melanolasius (Dieck) Focke |
ROSACEAE |
| Rudbeckia ampla A. Nelson |
ASTERACEAE |
| Rumex crispus L. |
POLYGONACEAE |
| Rumex hymenosepalus Torrey |
POLYGONACEAE |
| Rumex triangulivalvis (Danser) Rechinger f. |
POLYGONACEAE |
| Sabina monosperma (Engelmann) Rydberg |
CUPRESSACEAE |
| Sabina osteosperma (Torrey) Antoine |
CUPRESSACEAE |
| Sabina scopulorum (Sargent) Rydberg |
CUPRESSACEAE |
| Sagittaria cuneata Sheldon |
ALISMATACEAE |
| Salix amygdaloides Andersson |
SALICACEAE |
| Salix drummondiana Barratt |
SALICACEAE |
| Salix exigua Nuttall ssp exigua |
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 scouleriana Barratt ex Hooker |
SALICACEAE |
| Salsola australis R. Brown |
CHENOPODIACEAE |
| Salvia reflexa Hornemann |
LAMIACEAE |
| Sambucus microbotrys Rydberg |
CAPRIFOLIACEAE |
| Sanguisorba minor Scopoli |
ROSACEAE |
| Sarcobatus vermiculatus (Hooker) Torrey |
CHENOPODIACEAE |
| Schoenocrambe linifolia (Nuttall) Greene |
BRASSICACEAE |
| Schoenoplectus acutus (Mühlenberg) 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 |
| Sclerocactus glaucus (K. Schumann) L. Benson |
CACTACEAE |
| Sclerocactus parviflorus Clover & Jotter |
CACTACEAE |
| Scrophularia lanceolata Pursh |
SCROPHULARIACEAE |
| Scutellaria resinosa Torrey |
LAMIACEAE |
| Selaginella densa Rydberg |
SELAGINELLACEAE |
| Selaginella mutica D. C. Eaton |
SELAGINELLACEAE |
| Senecio eremophilus Richardson ssp kingii (Rydberg) Douglas & R.-Douglas |
ASTERACEAE |
| Senecio flaccidus Lessing var. douglasii (DeCandolle) Turner & Barkley |
ASTERACEAE |
| Senecio integerrimus Nuttall |
ASTERACEAE |
| Senecio spartioides Torrey & Gray |
ASTERACEAE |
| Senecio wootonii Greene |
ASTERACEAE |
| Seriphidium novum (A. Nelson) W. A. Weber |
ASTERACEAE |
| Seriphidium tridentatum (Nuttall) W. A. Weber |
ASTERACEAE |
| Seriphidium vaseyanum (Rydberg) W. A. Weber |
ASTERACEAE |
| Shepherdia argentea (Pursh) Nuttall |
ELAEAGNACEAE |
| Sidalcea candida A. Gray |
MALVACEAE |
| Silene antirrhina L. |
CARYOPHYLLACEAE |
| Sisymbrium altissimum L. |
BRASSICACEAE |
| Sisymbrium loeselii L. |
BRASSICACEAE |
| Sium suave Walter |
APIACEAE |
| Solanum rostratum Dunal |
SOLANACEAE |
| Solidago canadensis L. |
ASTERACEAE |
| Solidago nemoralis Aiton var longipetiolata (Mackenzie & Bush) Palmer & Steyermark |
ASTERACEAE |
| Solidago simplex Humboldt, Bonpland & Kunth var. simplex |
ASTERACEAE |
| Solidago velutina De Candolle |
ASTERACEAE |
| Sonchus oleraceus L. |
ASTERACEAE |
| Sonchus uliginosus Bieberstein |
ASTERACEAE |
| Sorbus scopulina Greene |
ROSACEAE |
| Sorghastrum avenaceum (Michaux) Nash |
POACEAE |
| Sparganium emersum Rehmann |
SPARGANIACEAE |
| Spartina gracilis Trinius |
POACEAE |
| Sphaeralcea coccinea (Pursh) Rydberg |
MALVACEAE |
| Sphaeralcea coccinea (Pursh) Rydberg ssp dissecta (Nuttall) Kearney |
MALVACEAE |
| Sphaeralcea parvifolia A. Nelson |
MALVACEAE |
| Spiranthes romanzoffiana Chamisso |
ORCHIDACEAE |
| Sporobolus airoides (Torrey) Torrey |
POACEAE |
| Sporobolus cryptandrus (Torrey) A. Gray |
POACEAE |
| Stanleya albescens Jones |
BRASSICACEAE |
| Stanleya pinnata (Pursh) Britton |
BRASSICACEAE |
| Stanleya pinnata (Pursh) Britton var. pinnata |
BRASSICACEAE |
| Stellaria umbellata Turczaninov ex Karilin & Kirilow |
ALSINACEAE |
| Stenotus armerioides Nuttall |
ASTERACEAE |
| Stephanomeria pauciflora (Torrey) A. Nelson |
ASTERACEAE |
| Stephanomeria tenuifolia (Rafinesque) Hall |
ASTERACEAE |
| Streptanthus cordatus Nuttall ex Torrey & Gray |
BRASSICACEAE |
| Streptopus fassettii Löve & Löve |
UVULARIACEAE |
| Stuckenia filiformis (Persoon) Börner ssp alpina (Blytt) Haynes |
POTAMOGETONACEAE |
| Sullivantia hapemanii (Coulter & Fisher) Coulter var. purpusii (Brandegee) Soltis |
SAXIFRAGACEAE |
| Swida sericea (L.) Holub |
CORNACEAE |
| Symphoricarpos longiflorus A. Gray |
CAPRIFOLIACEAE |
| Symphoricarpos rotundifolius A. Gray |
CAPRIFOLIACEAE |
| Tamarix ramosissima Ledebour |
TAMARICACEAE |
| Taraxacum officinale G. H. Weber ex Wiggers |
ASTERACEAE |
| Tetradymia canescens De Candolle |
ASTERACEAE |
| Tetradymia spinosa Hooker & Arnott |
ASTERACEAE |
| Tetraneuris ivesiana Greene |
ASTERACEAE |
| Tetraneuris torreyana (Nuttall) Greene |
ASTERACEAE |
| Thalictrum fendleri Engelmann ex A. Gray |
THALICTRACEAE |
| Thelesperma subnudum A. Gray |
ASTERACEAE |
| Thelypodiopsis elegans (Jones) Rydberg |
BRASSICACEAE |
| Thelypodiopsis juniperorum (Payson) Rydberg |
BRASSICACEAE |
| Thelypodium integrifolium (Nuttall) Endlicher |
BRASSICACEAE |
| Thelypodium sagittatum (Nuttall) Endlicher ssp sagittatum |
BRASSICACEAE |
| Thermopsis montana Nuttall ex Torrey & Gray |
FABACEAE |
| Thinopyrum intermedium (Host) Barkworth & Dewey |
POACEAE |
| Thinopyrum intermedium (Host) Barkworth & Dewey subsp. barbulatum (Schur) Barkworth & Dewey |
POACEAE |
| Thinopyrum ponticum (Podpera) Barkworth & Dewey |
POACEAE |
| Tithymalus brachyceras (Engelmann) Small |
EUPHORBIACEAE |
| Tithymalus spathulatus (Lamarck) W. A. Weber |
EUPHORBIACEAE |
| Townsendia annua Beaman |
ASTERACEAE |
| Townsendia exscapa (Richardson) T. C. Porter |
ASTERACEAE |
| Townsendia incana Nuttall |
ASTERACEAE |
| Toxicodendron rydbergii (Small ex Rydberg) Greene |
ANACARDIACEAE |
| Toxicoscordion venenosum (S. Watson) Rydberg |
MELANTHIACEAE |
| Tragopogon dubius Scopoli ssp major (Jacquin) Vollmann |
ASTERACEAE |
| Trifolium gymnocarpon Nuttall |
FABACEAE |
| Trifolium gymnocarpum Nuttall |
FABACEAE |
| Trifolium kingii S. Watson |
FABACEAE |
| Trifolium repens L. |
FABACEAE |
| Triglochin maritima L. |
JUNCAGINACEAE |
| Trisetum spicatum (L.) Richter ssp. alaskanum (Nash) Hultén |
POACEAE |
| Turritis glabra L. |
BRASSICACEAE |
| Typha latifolia L. |
TYPHACEAE |
| Ulmus pumila L. |
ULMACEAE |
| Urtica gracilis Aiton ssp gracilis |
URTICACEAE |
| Utricularia macrorhiza LeConte |
LENTIBULARIACEAE |
| Vaccaria pyramidata Medicus |
CARYOPHYLLACEAE |
| Vaccinium cespitosum Michaux |
ERICACEAE |
| Valeriana capitata Pallas ex Link ssp acutiloba (Rydberg) F. G. Meyer |
VALERIANACEAE |
| Valeriana edulis Nuttall |
VALERIANACEAE |
| Verbascum thapsus L. |
SCROPHULARIACEAE |
| Verbena bracteata Lagasca & Rodriguez |
VERBENACEAE |
| Veronica americana Schweinitz ex Bentham |
SCROPHULARIACEAE |
| Veronica catenata Pennell |
SCROPHULARIACEAE |
| Veronica peregrina L. ssp xalapensis (Humboldt,_Bonpland, & Kunth) Pennell |
SCROPHULARIACEAE |
| Vexibia nuttalliana (B. Turner) W. A. Weber |
FABACEAE |
| Vicia americana Mühlenberg |
FABACEAE |
| Viola adunca J. E. Smith |
VIOLACEAE |
| Viola praemorsa Douglas ex Lindley |
VIOLACEAE |
| Viola praemorsa Douglas ex Lindley ssp major (Hooker) M. S. Baker |
VIOLACEAE |
| Viola scopulorum (A. Gray) Greene |
VIOLACEAE |
| Viola sheltonii Torrey |
VIOLACEAE |
| Viola vallicola A. Nelson |
VIOLACEAE |
| Virgulaster ascendens (Lindley ex Hooker) Semple |
ASTERACEAE |
| Virgulus falcatus (Lindley) Reveal & Keener |
ASTERACEAE |
| Viticella orientalis (L.) W. A. Weber |
RANUNCULACEAE |
| Vulpia octoflora (Walter) Rydberg |
POACEAE |
| Woodsia oregana D.C. Eaton ssp cathcartiana (Robbinson) Windham |
DRYOPTERIDACEAE |
| Wyethia amplexicaulis (Nuttall) Nuttall |
ASTERACEAE |
| Wyethia arizonica A. Gray |
ASTERACEAE |
| Wyethia magna A. Nelson ex W. A. Weber |
ASTERACEAE |
| Ximenesia encelioides Cavanilles |
ASTERACEAE |
| Xylorhiza glabriuscula Nuttall |
ASTERACEAE |
| Xylorhiza venusta (Jones) Heller |
ASTERACEAE |
| Yucca baccata Torrey |
AGAVACEAE |
| Yucca harrimaniae Trelease |
AGAVACEAE |
| Zannichellia palustris L. |
ZANNICHELLIACEAE |
