938 Records
| Citation | Family Name |
| Abies concolor (Gordon & Glendower) Lindley ex Hildebrand |
PINACEAE |
| Abronia fragrans Nuttall ex Hooker |
NYCTAGINACEAE |
| Acer glabrum Torrey |
ACERACEAE |
| Acetosella vulgaris (K. Koch) Fourreau |
POLYGONACEAE |
| Achillea lanulosa Nuttall |
ASTERACEAE |
| Achnatherum hymenoides (Roemer & Schultes) Barkworth |
POACEAE |
| Achnatherum robustum (Vasey) Barkworth |
POACEAE |
| Achnatherum scribneri (Vasey) 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 |
| Acosta diffusa (Lamarck) Sojak |
ASTERACEAE |
| Acosta maculosa (L.) Holub |
ASTERACEAE |
| Actaea rubra (Aiton) Willdenow |
HELLEBORACEAE |
| Actaea rubra (Aiton) Willdenow ssp arguta (Nuttall in Torrey & Gray) Hultén |
HELLEBORACEAE |
| Adenolinum lewisii (Pursh) Löve & Löve |
LINACEAE |
| Adoxa moschatellina L. |
ADOXACEAE |
| Ageratina herbacea (A. Gray) King & Robinson |
ASTERACEAE |
| Agoseris aurantiaca (Hooker) Greene |
ASTERACEAE |
| Agoseris glauca (Pursh) Rafinesque |
ASTERACEAE |
| Agoseris glauca (Pursh) Rafinesque var. agrestis |
ASTERACEAE |
| Agoseris glauca (Pursh) Rafinesque var. glauca |
ASTERACEAE |
| Agrimonia striata Michaux |
ROSACEAE |
| Agropyron desertorum Fischer ex Link |
POACEAE |
| Agropyron pectiniforme Roemer & Schultes |
POACEAE |
| Agrostis gigantea Roth |
POACEAE |
| Agrostis idahoensis Nash |
POACEAE |
| Agrostis scabra Willdenow |
POACEAE |
| Aletes anisatus (A. Gray) Theobald & Tseng |
APIACEAE |
| Aliciella pinnatifida (Nuttall ex A. Gray) J.M. Porter |
POLEMONIACEAE |
| Alisma triviale Pursh |
ALISMATACEAE |
| Alliaria petiolata (Bieberstein) Cavara & Grande |
BRASSICACEAE |
| Allium cernuum Roth |
ALLIACEAE |
| Allium geyeri S. Watson |
ALLIACEAE |
| Allium textile Nelson & Macbride |
ALLIACEAE |
| Alnus incana (L.) Moench ssp tenuifolia (Nuttall) Breitung |
BETULACEAE |
| Alopecurus aequalis Sobolewski |
POACEAE |
| Alopecurus pratensis L. |
POACEAE |
| Amaranthus arenicola I. M. Johnston |
AMARANTHACEAE |
| Amaranthus wrightii S. Watson |
AMARANTHACEAE |
| Ambrosia acanthicarpa Hooker |
ASTERACEAE |
| Ambrosia artemisiifolia L. var elatior (L.) Descourtils |
ASTERACEAE |
| Ambrosia linearis (Rydberg) Payne |
ASTERACEAE |
| Ambrosia psilostachya De Candolle var coronopifolia (Torrey & Gray) Farwell |
ASTERACEAE |
| Ambrosia tomentosa Nuttall |
ASTERACEAE |
| Ambrosia trifida L. |
ASTERACEAE |
| Amelanchier alnifolia Nuttall |
ROSACEAE |
| Amelanchier utahensis Koehne |
ROSACEAE |
| Amerosedum lanceolatum (Torrey) Löve & Löve |
CRASSULACEAE |
| Amorpha nana Nuttall |
FABACEAE |
| Anaphalis margaritacea (L.) Bentham & Hooker |
ASTERACEAE |
| Andropogon gerardii Vitman |
POACEAE |
| Andropogon hallii Hackel |
POACEAE |
| Androsace chamaejasme Host ssp carinata (Torrey) Hultén |
PRIMULACEAE |
| Androsace septentrionalis L. |
PRIMULACEAE |
| Anemone cylindrica A. Gray |
RANUNCULACEAE |
| Anemone multifida Poiret var globosa (Nuttall) Torrey & Gray |
RANUNCULACEAE |
| Anemonidium canadense (L.) Löve & Löve |
RANUNCULACEAE |
| Anisantha tectorum (L.) Nevski |
POACEAE |
| 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 |
| Anticlea elegans (Pursh) Rydberg |
MELANTHIACEAE |
| Aphyllon fasciculatum (Nuttall) Torrey & Gray |
OROBANCHACEAE |
| Apocynum androsaemifolium L. |
APOCYNACEAE |
| Apocynum medium Greene |
APOCYNACEAE |
| Aquilegia chrysantha A. Gray var rydbergii Munz |
HELLEBORACEAE |
| Aquilegia coerulea James ex Torrey |
HELLEBORACEAE |
| Aquilegia elegantula Greene |
HELLEBORACEAE |
| Aquilegia saximontana Rydberg ex B. L. Robinson in_A. Gray |
HELLEBORACEAE |
| Aralia nudicaulis L. |
ARALIACEAE |
| Arceuthobium cyanocarpum Coulter & Nelson |
VISCACEAE |
| Arceuthobium douglasii Engelmann |
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 |
| Argemone hispida A. Gray |
PAPAVERACEAE |
| Argemone polyanthemos (Fedde) G. Ownbey |
PAPAVERACEAE |
| Argyrochosma fendleri (Kunze) Windham |
PTERIDACEAE |
| Aristida adscensionis L. |
POACEAE |
| Aristida divaricata Humboldt & Bonpland ex Willdenow |
POACEAE |
| Aristida purpurea Nuttall |
POACEAE |
| Arnica fulgens Pursh |
ASTERACEAE |
| Arnica latifolia Bongard |
ASTERACEAE |
| Arrhenatherum elatius (L.) P. Beauvois ex J. & K. Presl |
POACEAE |
| Artemisia biennis Willdenow |
ASTERACEAE |
| Artemisia bigelovii A. Gray |
ASTERACEAE |
| Artemisia carruthii Wood {ex} Carruth |
ASTERACEAE |
| Artemisia franserioides Greene |
ASTERACEAE |
| Artemisia frigida Willdenow |
ASTERACEAE |
| Artemisia ludoviciana Nuttall ssp ludoviciana |
ASTERACEAE |
| Artemisia pattersonii A. Gray |
ASTERACEAE |
| Artemisia scopulorum A. Gray |
ASTERACEAE |
| Asclepias arenaria Torrey |
ASCLEPIADACEAE |
| Asclepias asperula (Decaisne) Woodson ssp asperula |
ASCLEPIADACEAE |
| Asclepias hallii A. Gray |
ASCLEPIADACEAE |
| Asclepias speciosa Torrey |
ASCLEPIADACEAE |
| Asclepias tuberosa L. ssp terminalis Woodson |
ASCLEPIADACEAE |
| Asparagus officinalis L. |
ASPARAGACEAE |
| Asplenium septentrionale (L.) Hoffman |
ASPLENIACEAE |
| Asplenium trichomanes-ramosum L. |
ASPLENIACEAE |
| Aster laevis L. |
ASTERACEAE |
| Aster lanceolatus Willdenow ssp hesperius (A. Gray) Semple & Chmielewski |
ASTERACEAE |
| Aster porteri A. Gray |
ASTERACEAE |
| Astragalus aboriginum Richardson |
FABACEAE |
| Astragalus adsurgens Pallas var robustior Hooker |
FABACEAE |
| Astragalus agrestis Douglas ex G. Don |
FABACEAE |
| Astragalus bisulcatus (Hooker) A. Gray |
FABACEAE |
| Astragalus ceramicus Sheldon var filifolius (A. Gray) F. J. Hermann |
FABACEAE |
| Astragalus crassicarpus Nuttall |
FABACEAE |
| Astragalus drummondii Douglas ex Hooker |
FABACEAE |
| Astragalus flexuosus (Hooker) G. Don |
FABACEAE |
| Astragalus gracilis Nuttall |
FABACEAE |
| Astragalus lonchocarpus Torrey |
FABACEAE |
| Astragalus lotiflorus Hooker |
FABACEAE |
| Astragalus miser Douglas in Hooker var oblongifolius (Rydberg) Cronquist |
FABACEAE |
| Astragalus missouriensis Nuttall |
FABACEAE |
| Astragalus mollissimus Torrey |
FABACEAE |
| Astragalus mollissimus Torrey var mollissimus |
FABACEAE |
| Astragalus parryi A. Gray |
FABACEAE |
| Astragalus scopulorum T. C. Porter in Porter & Coulter |
FABACEAE |
| Astragalus shortianus Nuttall in Torrey & Gray |
FABACEAE |
| Astragalus sparsiflorus A. Gray |
FABACEAE |
| Astragalus tenellus Pursh |
FABACEAE |
| Athyrium filix-femina (L.) Roth ex Mertens |
DRYOPTERIDACEAE |
| Athyrium filix-femina (L.) Roth ex Mertens ssp angustum (Willdenow) Hultén |
DRYOPTERIDACEAE |
| Atragene columbiana Nuttall |
RANUNCULACEAE |
| Bahia dissecta (A. Gray) Britton |
ASTERACEAE |
| Batrachium trichophyllum (Chaix) van den Bosch |
RANUNCULACEAE |
| Beckmannia syzigachne (Steudel) Fernald ssp baicalensis (Kuznetzow) Koyama & Kuwano |
POACEAE |
| Berteroa incana (L.) De Candolle |
BRASSICACEAE |
| Besseya plantaginea (Bentham in De Candolle) Rydberg |
SCROPHULARIACEAE |
| Betula fontinalis Sargent |
BETULACEAE |
| Betula papyrifera H. Marshall |
BETULACEAE |
| Betula x eastwoodiae Sarg. |
BETULACEAE |
| Bidens cernua L. |
ASTERACEAE |
| Bidens frondosa L. |
ASTERACEAE |
| Bidens tenuisecta A. Gray |
ASTERACEAE |
| Bistorta bistortoides (Pursh) Small |
POLYGONACEAE |
| Blepharoneuron tricholepis (Torrey) Nash |
POACEAE |
| Boechera drummondii (A. Gray) Löve & Löve |
BRASSICACEAE |
| Boechera retrofracta (R. Graham) Löve & Löve |
BRASSICACEAE |
| Bothriochloa bladhii (Retzius) S. T. Blake |
POACEAE |
| Botrychium echo W. H. Wagner |
OPHIOGLOSSACEAE |
| Botrychium lineare W. H. Wagner |
OPHIOGLOSSACEAE |
| Bouteloua curtipendula (Michaux) Torrey |
POACEAE |
| Bouteloua curtipendula (Michaux) Torrey var curtipendula |
POACEAE |
| Breea arvensis (L.) Lessing |
ASTERACEAE |
| Brickellia grandiflora (Hooker) Nuttall |
ASTERACEAE |
| Bromopsis canadensis (Michaux) Holub |
POACEAE |
| Bromopsis inermis (Leysser) Holub |
POACEAE |
| Bromopsis lanatipes (Shear) Holub |
POACEAE |
| Bromopsis porteri (Coulter) Holub |
POACEAE |
| Bromopsis pumpelliana (Scribner) Holub |
POACEAE |
| Bromus secalinus L. |
POACEAE |
| Buchloë dactyloides (Nuttall) Engelmann |
POACEAE |
| Caesalpinia jamesii (Torrey & Gray) Fisher |
FABACEAE |
| Calamagrostis canadensis (Michaux) P. Beauvois |
POACEAE |
| Calamagrostis purpurascens R. Brown in Richardson |
POACEAE |
| Calamovilfa longifolia (Hooker) Scribner in Hackel |
POACEAE |
| Callirhoë involucrata (Torrey & Gray) A. Gray |
MALVACEAE |
| Callitriche hermaphroditica L. |
CALLITRICHACEAE |
| Callitriche verna L. emend. Lönnroth |
CALLITRICHACEAE |
| Calochortus gunnisonii S. Watson |
CALOCHORTACEAE |
| Calylophus serrulatus (Nuttall) Raven |
ONAGRACEAE |
| Calypso bulbosa (L.) Oakes |
ORCHIDACEAE |
| Camelina microcarpa Andrzejowski ex De Candolle |
BRASSICACEAE |
| Campanula parryi A. Gray |
CAMPANULACEAE |
| Campanula rotundifolia L. |
CAMPANULACEAE |
| Campanula uniflora L. |
CAMPANULACEAE |
| Capsella bursa-pastoris (L.) Medicus |
BRASSICACEAE |
| Caragana arborescens Lamarck |
FABACEAE |
| Caragana aurantiaca Koehne |
FABACEAE |
| Carduus nutans L. ssp macrolepis (Peterman) Kazmi |
ASTERACEAE |
| Carex aurea Nuttall |
CYPERACEAE |
| Carex bella L. H. Bailey |
CYPERACEAE |
| Carex brevior (Dewey) Mackenzie |
CYPERACEAE |
| Carex capillaris L. |
CYPERACEAE |
| Carex chalciolepis Holm |
CYPERACEAE |
| Carex crawei Dewey |
CYPERACEAE |
| Carex disperma Dewey |
CYPERACEAE |
| Carex ebenea Rydberg |
CYPERACEAE |
| Carex emoryi Dewey in Torrey |
CYPERACEAE |
| Carex festivella Mackenzie |
CYPERACEAE |
| Carex filifolia Nuttall |
CYPERACEAE |
| Carex foenea Willdenow |
CYPERACEAE |
| Carex hassei L. H. Bailey |
CYPERACEAE |
| Carex haydeniana Olney |
CYPERACEAE |
| Carex interior L. H. Bailey |
CYPERACEAE |
| Carex lanuginosa Michaux |
CYPERACEAE |
| Carex leptalea Wahlenberg |
CYPERACEAE |
| Carex microptera Mackenzie |
CYPERACEAE |
| Carex nebrascensis Dewey |
CYPERACEAE |
| Carex nelsonii Mackenzie in Rydberg |
CYPERACEAE |
| Carex norvegica Retzius |
CYPERACEAE |
| Carex norvegica Retzius ssp stevenii (Holm) D. Murray |
CYPERACEAE |
| Carex occidentalis L. H. Bailey |
CYPERACEAE |
| Carex oreocharis Holm |
CYPERACEAE |
| Carex parryana Dewey ssp hallii (Olney) D. Murray |
CYPERACEAE |
| Carex pensylvanica Lamarck ssp heliophila (Mackenzie) W. A. Weber |
CYPERACEAE |
| Carex praegracilis F. Boott |
CYPERACEAE |
| Carex praticola Rydberg |
CYPERACEAE |
| Carex scoparia Schkuhr ex Willdenow |
CYPERACEAE |
| Carex stenophylla Wahlenberg ssp eleocharis (L. H. Bailey) Hultén |
CYPERACEAE |
| Castilleja integra A. Gray in Torrey |
SCROPHULARIACEAE |
| Castilleja occidentalis Torrey |
SCROPHULARIACEAE |
| Castilleja sessiliflora Pursh |
SCROPHULARIACEAE |
| Ceanothus fendleri A. Gray |
RHAMNACEAE |
| Ceanothus herbaceus Rafinesque |
RHAMNACEAE |
| Cerastium beeringianum Chamisso & Schlechtendal ssp earlei (Rydberg) Hultén |
ALSINACEAE |
| Cerastium nutans Rafinesque var brachypodum Engelmann ex A. Gray |
ALSINACEAE |
| Cerastium strictum L. {emend.} Haenke |
ALSINACEAE |
| Cerasus pensylvanica (L. f.) Loiseleur |
ROSACEAE |
| Cerasus pumila (L.) Michaux ssp besseyi (L. H. Bailey) W. A. Weber |
ROSACEAE |
| Cercocarpus montanus Rafinesque |
ROSACEAE |
| Chaetopappa ericoides (A. Gray) Nesom |
ASTERACEAE |
| Chamaepericlymenum canadense (L.) Ascherson & Graebner |
CORNACEAE |
| Chamaerhodos erecta (L.) Bunge ssp nuttallii (Pickering ex Rydberg) Hultén |
ROSACEAE |
| Chamaesyce fendleri (Torrey & Gray) Small |
EUPHORBIACEAE |
| Chamaesyce glyptosperma (Engelmann) Small |
EUPHORBIACEAE |
| Chamaesyce serpyllifolia (Persoon) Small |
EUPHORBIACEAE |
| Chamerion danielsii D. Löve |
ONAGRACEAE |
| Cheilanthes féei T. Moore |
PTERIDACEAE |
| Cheilanthes fendleri Hooker |
PTERIDACEAE |
| Chenopodium atrovirens Rydberg |
CHENOPODIACEAE |
| Chenopodium berlandieri Moquin |
CHENOPODIACEAE |
| Chenopodium cycloides A. Nelson |
CHENOPODIACEAE |
| Chenopodium fremontii S. Watson |
CHENOPODIACEAE |
| Chenopodium leptophyllum (Nuttall ex Moquin) S. Watson |
CHENOPODIACEAE |
| Chenopodium simplex (Torrey) Rafinesque |
CHENOPODIACEAE |
| Chenopodium subglabrum (S. Watson) A. Nelson |
CHENOPODIACEAE |
| Chimaphila umbellata (L.) W. Barton ssp occidentalis (Rydberg) Hultén |
PYROLACEAE |
| Chloris verticillata Nuttall |
POACEAE |
| Chlorocrepis fendleri (Schultz-Bipontinus) W. A. Weber |
ASTERACEAE |
| Chondrophylla prostrata (Haenke ex Jacquin) J. P. Anderson |
GENTIANACEAE |
| Chondrosum gracile Humboldt, Bonpland, & Kunth |
POACEAE |
| Chondrosum prostratum (Lagasca) Sweet |
POACEAE |
| Chorispora tenella (Pallas) De Candolle |
BRASSICACEAE |
| Chrysothamnus nauseosus (Pallas ex Pursh) Britton ssp nauseosus |
ASTERACEAE |
| Chrysothamnus parryi (A. Gray) Greene ssp howardii (Parry ex A. Gray) Hall & Clements |
ASTERACEAE |
| Cichorium intybus L. |
ASTERACEAE |
| Cicuta douglasii (De Candolle) Coulter & Rose |
APIACEAE |
| Ciliaria austromontana (Wiegand) W. A. Weber |
SAXIFRAGACEAE |
| Cirsium canescens Nuttall |
ASTERACEAE |
| Cirsium ochrocentrum A. Gray |
ASTERACEAE |
| Cirsium scopulorum (Greene) Cockerell |
ASTERACEAE |
| Cirsium undulatum (Nuttall) Sprengel |
ASTERACEAE |
| Claytonia megarhiza (Parry ex A. Gray) S. Watson |
PORTULACACEAE |
| Claytonia rosea Rydberg |
PORTULACACEAE |
| Clematis ligusticifolia Nuttall ex Torrey & Gray |
RANUNCULACEAE |
| Clementsia rhodantha (A. Gray) Rose |
CRASSULACEAE |
| Cleome serrulata Pursh |
CAPPARACEAE |
| 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 |
| Commelina dianthifolia Delile |
COMMELINACEAE |
| Conioselinum scopulorum (A. Gray) Coulter & Rose |
APIACEAE |
| Convolvulus arvensis L. |
CONVOLVULACEAE |
| Conyza canadensis (L.) Cronquist |
ASTERACEAE |
| Conyza schiedeana (Lessing) Cronquist |
ASTERACEAE |
| Corallorhiza maculata Rafinesque |
ORCHIDACEAE |
| Corispermum americanum (Nuttall) Nuttall |
CHENOPODIACEAE |
| Corispermum villosum Rydberg |
CHENOPODIACEAE |
| Corydalis aurea Willdenow |
FUMARIACEAE |
| Corydalis curvisiliqua Engelmann subsp. occidentalis (Engelmann ex A. Gray) W. A. Weber |
FUMARIACEAE |
| Coryphantha vivipara (Nuttall) Britton & Rose var vivipara |
CACTACEAE |
| Cosmos parviflorus (Jacquin) Humboldt, Bonpland, & Kunth |
ASTERACEAE |
| Cotoneaster lucida Schlecht |
ROSACEAE |
| Critesion jubatum (L.) Nevski |
POACEAE |
| Crocanthemum bicknellii (Fernald) Janchen |
CISTACEAE |
| Croton texensis (Klotsch) Müller-Argoviensis in De Candolle |
EUPHORBIACEAE |
| Crunocallis chamissoi (Ledebour ex Sprengel) Rydberg |
PORTULACACEAE |
| Cryptantha crassisepala (Torrey & Gray) Greene var crassisepala |
BORAGINACEAE |
| Cryptantha fendleri (A. Gray) Greene |
BORAGINACEAE |
| Cryptogramma acrostichoides R. Brown in Richardson |
PTERIDACEAE |
| Cucurbita foetidissima Humboldt, Bonpland, & Kunth |
CUCURBITACEAE |
| Cyclachaena xanthifolia (Nuttall) Fresenius |
ASTERACEAE |
| Cycloloma atriplicifolium (Sprengel) Coulter |
CHENOPODIACEAE |
| Cymopterus acaulis (Pursh) Rafinesque |
APIACEAE |
| Cymopterus montanus Torrey & Gray |
APIACEAE |
| Cypripedium calceolus L. ssp parviflorum (Salisbury) Hultén |
CYPRIPEDIACEAE |
| Cyrtorhyncha ranunculina Nuttall ex Torrey & Gray |
RANUNCULACEAE |
| Cystopteris fragilis (L.) Bernhardi |
DRYOPTERIDACEAE |
| Cystopteris reevesiana Lellinger |
DRYOPTERIDACEAE |
| Dactylis glomerata L. |
POACEAE |
| Dalea aurea Nuttall ex Pursh |
FABACEAE |
| Dalea candida Willdenow var oligophylla (Torrey) Shinners |
FABACEAE |
| Dalea cylindriceps Barneby |
FABACEAE |
| Dalea jamesii (Torrey) Torrey & Gray |
FABACEAE |
| Dalea multiflora (Nuttall) Shinners |
FABACEAE |
| Dalea purpurea Ventenat |
FABACEAE |
| Dalea villosa Sprengel |
FABACEAE |
| Danthonia parryi Scribner |
POACEAE |
| Danthonia spicata (L.) P. Beauvois ex Roemer & Schultes var pinetorum Piper |
POACEAE |
| Datura wrightii Regel |
SOLANACEAE |
| Delphinium nuttallianum Pritzel ex Walpers |
HELLEBORACEAE |
| Delphinium ramosum Rydberg |
HELLEBORACEAE |
| Deschampsia cespitosa (L.) P. Beauvois |
POACEAE |
| Descurainia sophia (L.) Webb ex Prantl |
BRASSICACEAE |
| Diplachne fascicularis (Lamarck) P. Beauvois |
POACEAE |
| Distegia involucrata (Banks ex Sprengel) Cockerell |
CAPRIFOLIACEAE |
| Dodecatheon pulchellum (Rafinesque) Merrill |
PRIMULACEAE |
| Draba aurea M. Vahl ex Hornemann |
BRASSICACEAE |
| Draba crassa Rydberg |
BRASSICACEAE |
| Draba nemorosa L. |
BRASSICACEAE |
| Draba streptocarpa A. Gray |
BRASSICACEAE |
| Dracocephalum parviflorum Nuttall |
LAMIACEAE |
| Dryas octopetala L. ssp hookeriana (Juzepczuk) Hultén |
ROSACEAE |
| Drymocallis arguta (Pursh) Rydberg |
ROSACEAE |
| Drymocallis fissa (Nuttall) Rydberg |
ROSACEAE |
| Dryopteris filix-mas (L.) Schott |
DRYOPTERIDACEAE |
| Dugaldia hoopesii (A. Gray) Rydberg |
ASTERACEAE |
| Dyssodia papposa (Ventenat) A. S. Hitchcock |
ASTERACEAE |
| Echinocereus triglochidiatus Engelmann var. triglochidiatus |
CACTACEAE |
| Eichhornia crassipes (Mart.) Solms |
ARACEAE |
| Elaeagnus angustifolia L. |
ELAEAGNACEAE |
| Elatine rubella Rydberg |
ELATINACEAE |
| Eleocharis acicularis (L.) Roemer & Schultes |
CYPERACEAE |
| Eleocharis elliptica Kunth var compressa (Sullivant) Drapalik & Mohlenbrock |
CYPERACEAE |
| Eleocharis obtusa (Willdenow) Schultes |
CYPERACEAE |
| Elymus canadensis L. |
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 andinus (Scribner & Smith) Löve & Löve |
POACEAE |
| Elymus trachycaulus (Link) Gould ex Shinners ssp bakeri (E. Nelson) Löve |
POACEAE |
| Elytrigia repens (L.) Nevski |
POACEAE |
| Engelmannia peristenia (Rafinesque) Goodman & Lawson |
ASTERACEAE |
| Epilobium brachycarpum K. Presl |
ONAGRACEAE |
| Epilobium ciliatum Rafinesque |
ONAGRACEAE |
| Epilobium saximontanum Haussknecht |
ONAGRACEAE |
| Equisetum arvense L. |
EQUISETACEAE |
| Eragrostis cilianensis (Allioni) F. T. Hubbard |
POACEAE |
| Eragrostis curvula (Schrader) Nees |
POACEAE |
| Eragrostis pilosa (L.) P. Beauvois |
POACEAE |
| Eragrostis trichodes (Nuttall) Wood |
POACEAE |
| Eremogone fendleri (A. Gray) Ikonnikov |
ALSINACEAE |
| Eremogone hookeri (Nuttall ex Torrey & Gray) W. A. Weber ssp hookeri |
ALSINACEAE |
| Eremogone hookeri (Nuttall ex Torrey & Gray) W. A. Weber ssp pinetorum (A. Nelson) W. A. Weber |
ALSINACEAE |
| Erigeron bellidiastrum Nuttall |
ASTERACEAE |
| Erigeron canus A. Gray |
ASTERACEAE |
| Erigeron colo-mexicanus A. Nelson |
ASTERACEAE |
| Erigeron compositus Pursh |
ASTERACEAE |
| Erigeron divergens Torrey & Gray |
ASTERACEAE |
| Erigeron elatior (A. Gray) Greene |
ASTERACEAE |
| Erigeron flagellaris A. Gray |
ASTERACEAE |
| Erigeron formosissimus Greene |
ASTERACEAE |
| Erigeron formosissimus Greene var viscidus (Rydberg) Cronquist |
ASTERACEAE |
| Erigeron glabellus Nuttall |
ASTERACEAE |
| Erigeron glabellus Nuttall ssp. pubescens (Hooker) Cronquist |
ASTERACEAE |
| Erigeron grandiflorus Hooker |
ASTERACEAE |
| Erigeron pinnatisectus (A. Gray) A. Nelson |
ASTERACEAE |
| Erigeron pumilus Nuttall |
ASTERACEAE |
| Erigeron simplex Greene |
ASTERACEAE |
| Erigeron speciosus (Lindley) De Candolle var macranthus (Nuttall) Cronquist |
ASTERACEAE |
| Erigeron subtrinervis Rydberg |
ASTERACEAE |
| Erigeron vetensis Rydberg |
ASTERACEAE |
| Eriogonum annuum Nuttall |
POLYGONACEAE |
| Eriogonum effusum Nuttall |
POLYGONACEAE |
| Eriogonum flavum Nuttall subsp. chloranthum (Greene) S. Stokes |
POLYGONACEAE |
| Eriogonum gordonii Bentham |
POLYGONACEAE |
| Eriogonum jamesii Bentham in A. De Candolle |
POLYGONACEAE |
| Eriogonum subalpinum Greene |
POLYGONACEAE |
| Eriogonum umbellatum Torrey var. umbellatum |
POLYGONACEAE |
| Erioneuron pilosum (Buckley) Nash |
POACEAE |
| Eriophorum angustifolium Honckeny |
CYPERACEAE |
| Eritrichum aretioides (Chamisso) De Candolle |
BORAGINACEAE |
| Erodium cicutarium (L.) L'Heritier |
GENTIANACEAE |
| Erysimum asperum (Nuttall) De Candolle |
BRASSICACEAE |
| Erysimum capitatum (Douglas) Greene |
BRASSICACEAE |
| Erythrocoma triflora (Pursh) Greene |
ROSACEAE |
| Eupatorium maculatum L. subsp. bruneri (A. Gray) G. W. Douglas |
ASTERACEAE |
| Euploca convolvulacea Nuttall |
BORAGINACEAE |
| Evolvulus nuttallianus Schultes |
CONVOLVULACEAE |
| Fallopia convolvulus (L.) Löve |
POLYGONACEAE |
| Festuca arizonica Vasey |
POACEAE |
| Festuca brachyphylla Schultes ssp coloradensis Fredriksen |
POACEAE |
| Festuca rubra L. |
POACEAE |
| Festuca saximontana Rydberg |
POACEAE |
| Festuca thurberi Vasey in Rothrock |
POACEAE |
| Forestiera pubescens Nuttall |
OLEACEAE |
| Fragaria vesca L. ssp bracteata (Heller) Staudt |
ROSACEAE |
| Fragaria virginiana P. Miller ssp glauca (S. Watson) Staudt |
ROSACEAE |
| Frangula alnus P. Miller |
RHAMNACEAE |
| Frankenia jamesii Torrey ex A. Gray |
FRANKENIACEAE |
| Frasera speciosa Douglas ex Grisebach |
GENTIANACEAE |
| Froelichia gracilis (Hooker) Moquin |
AMARANTHACEAE |
| Gaillardia aristata Pursh |
ASTERACEAE |
| Gaillardia pinnatifida Torrey |
ASTERACEAE |
| Galinsoga parviflora Cavanilles |
ASTERACEAE |
| Galium mexicanum Humboldt, Bonpland, & Kunth ssp asperrimum (A. Gray) Dempster |
RUBIACEAE |
| Galium septentrionale Roemer & Schultes |
RUBIACEAE |
| Galium triflorum Michaux |
RUBIACEAE |
| Gastrolychnis drummondii (Hooker) Löve & Löve |
CARYOPHYLLACEAE |
| Gaura coccinea Nuttall ex Pursh |
ONAGRACEAE |
| Gaura mollis James |
ONAGRACEAE |
| Gayophytum diffusum Torrey & Gray ssp parviflorum Lewis & Szweykowski |
ONAGRACEAE |
| Gayophytum ramosissimum Torrey & Gray |
ONAGRACEAE |
| Gentianella acuta (Michaux) Hiitonen |
GENTIANACEAE |
| Gentianella strictiflora (Rydberg) W. A. Weber |
GENTIANACEAE |
| Gentianodes algida (Pallas) Löve & Löve |
GENTIANACEAE |
| Gentianopsis procera (Holm) Iltis |
GENTIANACEAE |
| Geranium caespitosum James ex Torrey |
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 |
| Glandularia bipinnatifida (Nuttall) Nuttall |
VERBENACEAE |
| Glyceria grandis S. Watson in A. Gray |
POACEAE |
| Glycyrrhiza lepidota Pursh |
FABACEAE |
| Goodyera repens (L.) R. Brown |
ORCHIDACEAE |
| Grammica indecora (Choisy) W. A. Weber var neuropetala (Engelmann) W. A. Weber |
CUSCUTACEAE |
| Gratiola neglecta Torrey |
SCROPHULARIACEAE |
| Grindelia revoluta Steyermark |
ASTERACEAE |
| Grindelia squarrosa (Pursh) Dunal |
ASTERACEAE |
| Grindelia subalpina Greene |
ASTERACEAE |
| Gutierrezia sarothrae (Pursh) Britton & Rusby |
ASTERACEAE |
| Gymnocarpium dryopteris (L.) Newman |
DRYOPTERIDACEAE |
| Gypsophila elegans Bieberstein |
CARYOPHYLLACEAE |
| Gypsophila paniculata L. |
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 |
| Helenium autumnale L. |
ASTERACEAE |
| Helianthella parryi 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 |
| Heliomeris multiflora Nuttall var multiflora |
ASTERACEAE |
| Heliopsis helianthoides (L.) Sweet var scabra (Dunal) Fernald |
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 |
| Hesperostipa spartea (Trinius) Barkworth |
POACEAE |
| Heterotheca foliosa (Nutt.) Shinners |
ASTERACEAE |
| Heterotheca villosa (Pursh) Shinners |
ASTERACEAE |
| Heuchera bracteata (Torrey) Seringe |
SAXIFRAGACEAE |
| Heuchera hallii A. Gray |
SAXIFRAGACEAE |
| Heuchera parvifolia Nuttall ex Torrey & Gray |
SAXIFRAGACEAE |
| Heuchera richardsonii R. Brown |
SAXIFRAGACEAE |
| 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 |
| Holodiscus dumosus (Nuttall ex Hooker) Heller |
ROSACEAE |
| Hymenopappus filifolius Hooker var cinereus (Rydberg) I. M. Johnston |
ASTERACEAE |
| Hymenopappus tenuifolius Pursh |
ASTERACEAE |
| Hypericum formosum Humboldt, Bonpland, & Kunth |
HYPERICACEAE |
| Hypericum majus (A. Gray) Britton |
HYPERICACEAE |
| Ipomoea leptophylla Torrey |
CONVOLVULACEAE |
| Ipomopsis aggregata (Pursh) V. Grant |
POLEMONIACEAE |
| Ipomopsis aggregata (Pursh) V. Grant ssp candida (Rydberg) V. & A. Grant |
POLEMONIACEAE |
| Ipomopsis laxiflora (Coulter) V. Grant |
POLEMONIACEAE |
| Ipomopsis longiflora (Torrey) V. Grant |
POLEMONIACEAE |
| Iris missouriensis Nuttall |
IRIDACEAE |
| Iva axillaris Pursh |
ASTERACEAE |
| Jamesia americana Torrey & Gray |
HYDRANGEACEAE |
| Juncus alpino-articulatus Chaix in Villars |
JUNCACEAE |
| Juncus arcticus Willdenow ssp ater (Rydberg) Hultén |
JUNCACEAE |
| Juncus articulatus L. |
JUNCACEAE |
| Juncus brachycephalus (Engelmann) Buchenau |
JUNCACEAE |
| Juncus bufonius L. |
JUNCACEAE |
| Juncus comosa E. Meyer |
JUNCACEAE |
| Juncus confusus Coville |
JUNCACEAE |
| Juncus drummondii E. Meyer |
JUNCACEAE |
| Juncus dudleyi Wiegand |
JUNCACEAE |
| Juncus interior Wiegand |
JUNCACEAE |
| Juncus longistylis Torrey |
JUNCACEAE |
| Juncus nodosus L. |
JUNCACEAE |
| Juncus saximontanus A. Nelson |
JUNCACEAE |
| Juncus torreyi Coville |
JUNCACEAE |
| Juniperus communis L. ssp alpina (J. E. Smith) Celakovsky |
CUPRESSACEAE |
| Kobresia myosuroides (Villars) Fiori & Paoli |
CYPERACEAE |
| Koeleria macrantha (Ledebour) Schultes |
POACEAE |
| Koenigia islandica L. |
POLYGONACEAE |
| Krigia biflora (Walter) S. F. Blake |
ASTERACEAE |
| Lactuca canadensis L. |
ASTERACEAE |
| Lactuca serriola L. |
ASTERACEAE |
| Lactuca tatarica (L.) C. A. Meyer ssp pulchella (Pursh) Stebbins |
ASTERACEAE |
| Lappula redowskii (Hornemann) Greene |
BORAGINACEAE |
| Lapsana communis L. |
ASTERACEAE |
| Lathyrus eucosmus Butters & St. John |
FABACEAE |
| Lathyrus polymorphus Nuttall |
FABACEAE |
| Lathyrus polymorphus Nuttall ssp incanus (Small & Rydberg) C. L. Hitchcock |
FABACEAE |
| Leiostemon ambiguus (Torrey) Greene |
SCROPHULARIACEAE |
| Lemna minor L. |
LEMNACEAE |
| Lepidium densiflorum Schrader |
BRASSICACEAE |
| Lepidotheca suaveolens (Pursh) Nuttall |
ASTERACEAE |
| Lesquerella calcicola Rollins |
BRASSICACEAE |
| Lesquerella ludoviciana (Nuttall) S. Watson |
BRASSICACEAE |
| Lesquerella montana (A. Gray) S. Watson |
BRASSICACEAE |
| Leucanthemum vulgare Lamarck |
ASTERACEAE |
| Leucocrinum montanum Nuttall ex A. Gray |
LILIACEAE |
| 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 obtusiloba (Rydberg) Löve & Löve |
ALSINACEAE |
| Ligularia bigelovii (A. Gray) W. A. Weber var hallii (A. Gray) W. A. Weber |
ASTERACEAE |
| Ligularia pudica (Greene) W. A. Weber |
ASTERACEAE |
| Ligularia taraxacoides (A. Gray) W. A. Weber |
ASTERACEAE |
| Ligusticum porteri Coulter & Rose |
APIACEAE |
| Lilium philadelphicum L. |
LILIACEAE |
| 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 |
| Lithospermum incisum Lehmann |
BORAGINACEAE |
| Lithospermum multiflorum Torrey ex A. Gray |
BORAGINACEAE |
| Lloydia serotina (L.) Salisbury ex Reichenbach |
LILIACEAE |
| Lobelia cardinalis L. ssp graminea (Lamarck) McVaugh |
CAMPANULACEAE |
| Lobelia siphilitica L. var ludoviciana A. De Candolle |
CAMPANULACEAE |
| Lobularia maritima (L.) Desvaux |
BRASSICACEAE |
| 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 |
| Lupinus argenteus Pursh |
FABACEAE |
| Lupinus plattensis S. Watson |
FABACEAE |
| Lupinus pusillus Pursh |
FABACEAE |
| Luzula parviflora (Ehrhart) Desvaux |
JUNCACEAE |
| Luzula spicata (L.) De Candolle |
JUNCACEAE |
| Lycium barbarum L. |
SOLANACEAE |
| Lycopus americanus Mühlenberg ex W. Barton |
LAMIACEAE |
| Lycurus setosus (Nuttall) C. Reeder |
POACEAE |
| Lygodesmia juncea (Pursh) D. Don |
ASTERACEAE |
| Lysimachia ciliata L. |
PRIMULACEAE |
| Machaeranthera bigelovii (A. Gray) Greene |
ASTERACEAE |
| Machaeranthera canescens (Pursh) A. Gray |
ASTERACEAE |
| Machaeranthera pattersonii (A. Gray) Greene |
ASTERACEAE |
| Mahonia repens (Lindley) G. Don |
BERBERIDACEAE |
| Maianthemum amplexicaule (Nuttall) W. A. Weber |
CONVALLARIACEAE |
| Maianthemum stellatum (L.) Link |
CONVALLARIACEAE |
| Malus domestica Borkhausen |
ROSACEAE |
| Malva neglecta Wallroth |
MALVACEAE |
| Mariscus fendlerianus (Böckeler) Koyama |
CYPERACEAE |
| Mariscus schweinitzii (Torrey) Koyama |
CYPERACEAE |
| Marsilea vestita Hooker & Greville |
MARSILEACEAE |
| Medicago lupulina L. |
FABACEAE |
| Medicago sativa L. |
FABACEAE |
| Melampodium leucanthum Torrey & Gray |
ASTERACEAE |
| Melandrium dioicum (L.) Cosson & Germain |
CARYOPHYLLACEAE |
| Melica porteri Scribner |
POACEAE |
| Melilotus albus Medicus |
FABACEAE |
| Melilotus officinale (L.) Pallas |
FABACEAE |
| Menodora scabra (Engelmann) A. Gray |
OLEACEAE |
| Mentha arvensis L. |
LAMIACEAE |
| Mertensia alpina (Torrey) G. Don |
BORAGINACEAE |
| 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 |
| Micranthes rhomboidea (Greene) Small |
SAXIFRAGACEAE |
| Microsteris gracilis (Douglas ex Hooker) Greene ssp humilis (Greene) V. Grant |
POLEMONIACEAE |
| Mimulus glabratus Humboldt, Bonpland, & Kunth |
SCROPHULARIACEAE |
| Mirabilis oxybaphoides (A. Gray) A. Gray |
NYCTAGINACEAE |
| Monarda fistulosa L. var menthifolia (R. Graham) Fernald |
LAMIACEAE |
| Monolepis nuttalliana (Schultes) Greene |
CHENOPODIACEAE |
| Monroa squarrosa (Nuttall) Torrey |
POACEAE |
| Muhlenbergia montana (Nuttall) A. S. Hitchcock |
POACEAE |
| Muhlenbergia pungens Thurber ex A. Gray |
POACEAE |
| Muhlenbergia racemosa (Michaux) Britton, Sterns, & Poggenberg |
POACEAE |
| Muhlenbergia richardsonis (Trinius) Rydberg |
POACEAE |
| Muhlenbergia torreyi (Kunth) A. S. Hitchcock ex Bush |
POACEAE |
| Muhlenbergia wrightii Vasey ex Coulter |
POACEAE |
| Muscaria delicatula Small |
SAXIFRAGACEAE |
| Myosurus minimus L. ssp minimus |
RANUNCULACEAE |
| Myriophyllum sibiricum Komarov |
HALORAGACEAE |
| Nasturtium officinale R. Brown |
BRASSICACEAE |
| Nepeta cataria L. |
LAMIACEAE |
| Noccaea montana (L.) F. K. Meyer |
BRASSICACEAE |
| Nuttallia nuda (Pursh) Greene |
LOASACEAE |
| Nuttallia speciosa (Osterhout) Greene |
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 coronopifolia Torrey & Gray |
ONAGRACEAE |
| Oenothera flava (A. Nelson) Garrett |
ONAGRACEAE |
| Oenothera harringtonii W. L. Wagner et al in W. L. Wagner |
ONAGRACEAE |
| Oenothera latifolia (Rydberg) Munz |
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 pacificus (Nuttall) Poljakov |
ASTERACEAE |
| Onobrychis viciifolia Scopoli |
FABACEAE |
| Opuntia macrorhiza Engelmann |
CACTACEAE |
| Opuntia phaeacantha Engelmann |
CACTACEAE |
| Opuntia polyacantha Haworth var. polyacantha |
CACTACEAE |
| Oreobatus deliciosus (James ex Torrey) Rydberg |
ROSACEAE |
| Oreocarya suffruticosa (Torrey) Greene |
BORAGINACEAE |
| Oreocarya thyrsiflora Greene |
BORAGINACEAE |
| Oreocarya virgata (T. C. Porter) Greene |
BORAGINACEAE |
| Oreochrysum parryi (A. Gray) Rydberg |
ASTERACEAE |
| Oreoxis humilis Rafinesque |
APIACEAE |
| Orobanche ludoviciana Nuttall |
OROBANCHACEAE |
| Orthilia secunda (L.) House |
PYROLACEAE |
| Orthocarpus luteus Nuttall |
SCROPHULARIACEAE |
| Oryzopsis asperifolia Michaux |
POACEAE |
| Osmorhiza chilensis Hooker & Arnott |
APIACEAE |
| Osmorhiza depauperata Philippi |
APIACEAE |
| Oxalis dillenii Jacquin |
OXALIDACEAE |
| Oxybaphus glaber S. Watson |
NYCTAGINACEAE |
| Oxybaphus hirsutus (Pursh) Sweet in De Candolle |
NYCTAGINACEAE |
| Oxybaphus linearis (Pursh) B. L. Robinson |
NYCTAGINACEAE |
| Oxyria digyna (L.) J. Hill |
POLYGONACEAE |
| Oxytropis lambertii Pursh |
FABACEAE |
| Oxytropis multiceps Nuttall |
FABACEAE |
| Oxytropis sericea Nuttall |
FABACEAE |
| Packera fendleri (A. Gray) Weber & Löve |
ASTERACEAE |
| Packera neomexicana (A. Gray) 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 |
| Palafoxia sphacelata (Nuttall ex Torrey) Cory |
ASTERACEAE |
| Panicum capillare L. |
POACEAE |
| Panicum virgatum L. |
POACEAE |
| Papaver kluanense D. Löve |
PAPAVERACEAE |
| Parnassia parviflora De Candolle |
PARNASSIACEAE |
| Paronychia jamesii Torrey & Gray |
ALSINACEAE |
| Paronychia sessiliflora Nuttall |
ALSINACEAE |
| Parthenocissus vitacea (Knerr) A. S. Hitchcock |
VITACEAE |
| Pascopyrum smithii (Rydberg) Löve |
POACEAE |
| Pectis angustifolia Torrey |
ASTERACEAE |
| Pedicularis canadensis L. ssp fluviatilis (Heller) W. A. Weber |
SCROPHULARIACEAE |
| Pedicularis groenlandica Retzius |
SCROPHULARIACEAE |
| Pedicularis parryi A. Gray |
SCROPHULARIACEAE |
| Pedicularis parryi A. Gray ssp parryi |
SCROPHULARIACEAE |
| Pedicularis procera A. Gray |
SCROPHULARIACEAE |
| Pediomelum hypogaeum (Nuttall ex Torrey & Gray) Rydberg |
FABACEAE |
| Pellaea atropurpurea (L.) Link |
PTERIDACEAE |
| Penstemon albidus Nuttall |
SCROPHULARIACEAE |
| Penstemon angustifolius Nuttall ex Pursh |
SCROPHULARIACEAE |
| Penstemon angustifolius Nuttall ex Pursh ssp caudatus (Heller) Keck |
SCROPHULARIACEAE |
| Penstemon auriberbis Pennell |
SCROPHULARIACEAE |
| Penstemon barbatus (Cavanilles) Roth |
SCROPHULARIACEAE |
| Penstemon glaber Pursh |
SCROPHULARIACEAE |
| Penstemon glaber Pursh var glaber |
SCROPHULARIACEAE |
| Penstemon gracilis Nuttall |
SCROPHULARIACEAE |
| Penstemon hallii A. Gray |
SCROPHULARIACEAE |
| Penstemon procerus Douglas ex R. Graham var procerus |
SCROPHULARIACEAE |
| Penstemon secundiflorus 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 |
| Pericome caudata A. Gray var caudata |
ASTERACEAE |
| Persicaria hydropiper (L.) Opiz |
POLYGONACEAE |
| Persicaria maculata (L.) S. Gray |
POLYGONACEAE |
| Persicaria pensylvanica (L.) Gomez |
POLYGONACEAE |
| Phacelia denticulata Osterhout |
HYDROPHYLLACEAE |
| Phacelia hastata Douglas ex Lehmann |
HYDROPHYLLACEAE |
| Phacelia heterophylla Pursh |
HYDROPHYLLACEAE |
| Phacelia sericea (R. Graham) A. Gray ssp sericea |
HYDROPHYLLACEAE |
| Phleum commutatum Gaudin |
POACEAE |
| Phleum pratense L. |
POACEAE |
| 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 vitulifera Rydberg |
BRASSICACEAE |
| Physocarpus monogynus (Torrey) Coulter |
ROSACEAE |
| Physocarpus opulifolius (L.) Maximovicz |
ROSACEAE |
| Picradeniopsis oppositifolia (Nuttall) Rydberg |
ASTERACEAE |
| Pinus edulis Engelmann |
PINACEAE |
| Pinus flexilis James |
PINACEAE |
| Piptatherum micranthum (Trinius & Ruprecht) Barkworth |
POACEAE |
| Pistia stratiotes L. |
ARACEAE |
| Plantago major L. |
PLANTAGINACEAE |
| Plantago patagonica Jacquin |
PLANTAGINACEAE |
| Platanthera aquilonis Sheviak |
ORCHIDACEAE |
| Platanthera purpurascens (Rydberg) Sheviak & W.F. Jennings |
ORCHIDACEAE |
| Pneumonanthe affinis (Grisebach) Greene |
GENTIANACEAE |
| Pneumonanthe bigelovii (A. Gray) Greene |
GENTIANACEAE |
| Pneumonanthe parryi (Engelmann) Greene |
GENTIANACEAE |
| Poa annua L. |
POACEAE |
| Poa arida Vasey |
POACEAE |
| Poa bigelovii Vasey & Scribner |
POACEAE |
| Poa compressa L. |
POACEAE |
| Poa fendleriana (Steudel) Vasey |
POACEAE |
| Poa lettermanii Vasey |
POACEAE |
| Poa palustris L. |
POACEAE |
| Polanisia dodecandra (L.) De Candolle |
CAPPARACEAE |
| Polemonium caeruleum L. ssp amygdalinum (Wherry) Munz |
POLEMONIACEAE |
| Polemonium pulcherrimum Hooker ssp delicatum (Rydberg) Brand |
POLEMONIACEAE |
| Polemonium viscosum Nuttall |
POLEMONIACEAE |
| Polygonum arenastrum Boreau |
POLYGONACEAE |
| Polygonum douglasii Greene |
POLYGONACEAE |
| Polygonum ramosissimum Michaux |
POLYGONACEAE |
| Polypodium saximontanum Windham |
POLYPODIACEAE |
| Polypogon monspeliensis (L.) Desfontaines |
POACEAE |
| Populus acuminata Rydberg |
SALICACEAE |
| Populus angustifolia James |
SALICACEAE |
| Populus balsamifera L. |
SALICACEAE |
| Populus deltoides H. Marshall ssp monilifera (Aiton) Eckenwalder |
SALICACEAE |
| Populus tremuloides Michaux |
SALICACEAE |
| Portulaca halimoides L. |
PORTULACACEAE |
| Potamogeton foliosus Rafinesque |
POTAMOGETONACEAE |
| Potentilla ambigens Greene |
ROSACEAE |
| Potentilla anglica Laicharding |
ROSACEAE |
| Potentilla argentea L. |
ROSACEAE |
| Potentilla concinna Richardson var. concinna |
ROSACEAE |
| Potentilla hippiana Lehmann |
ROSACEAE |
| Potentilla norvegica L. |
ROSACEAE |
| Potentilla pensylvanica L. |
ROSACEAE |
| Potentilla pulcherrima Lehmann |
ROSACEAE |
| Potentilla subjuga Rydberg |
ROSACEAE |
| Prenanthes racemosa Michaux |
ASTERACEAE |
| Primula angustifolia Torrey |
PRIMULACEAE |
| Primula incana Jones |
PRIMULACEAE |
| Primula parryi A. Gray |
PRIMULACEAE |
| Prunella vulgaris L. |
LAMIACEAE |
| Prunus americana H. Marshall |
ROSACEAE |
| Pseudocymopterus montanus (A. Gray) Coulter & Rose |
APIACEAE |
| Pseudognaphalium stramineum (Humboldt, Bonpland & Kunth) W. A. Weber |
ASTERACEAE |
| Pseudognaphalium viscosum (HBK) W. A. Weber |
ASTERACEAE |
| Pseudotsuga menziesii (Mirbel) Franco |
PINACEAE |
| Psilochenia runcinata (James ex Torrey) Löve & Löve |
ASTERACEAE |
| Psoralidium lanceolatum (Pursh) Rydberg |
FABACEAE |
| Psoralidium tenuiflorum (Pursh) Rydberg |
FABACEAE |
| Psychrophila leptosepala (De Candolle) W. A. Weber |
HELLEBORACEAE |
| Ptelea trifoliata L. |
RUTACEAE |
| Pteridium aquilinum (L.) Kuhn |
DENNSTAEDTIACEAE |
| Pteridium aquilinum (L.) Kuhn ssp lanuginosum (Bongard) Hultén |
DENNSTAEDTIACEAE |
| Pterogonum alatum (Torrey) Gross |
POLYGONACEAE |
| Pterospora andromedea Nuttall |
MONOTROPACEAE |
| Ptilagrostis porteri (Rydberg) W. A. Weber |
POACEAE |
| Puccinellia airoides Watson & Coulter |
POACEAE |
| Pulsatilla patens (L.) P. Miller ssp multifida (Pritzel) Zamels |
RANUNCULACEAE |
| Pyrola chlorantha Swartz |
PYROLACEAE |
| Pyrola picta J. E. Smith |
PYROLACEAE |
| Pyrola rotundifolia L. ssp asarifolia (Michaux) Löve |
PYROLACEAE |
| Pyrrocoma lanceolata (Hooker) Greene |
ASTERACEAE |
| Quercus gambelii Nuttall |
FAGACEAE |
| Quercus grisea Liebmann |
FAGACEAE |
| Quercus undulata Torrey |
FAGACEAE |
| Quincula lobata (Torrey) Rafinesque |
SOLANACEAE |
| Ranunculus adoneus A. Gray |
RANUNCULACEAE |
| Ranunculus cardiophyllus Hooker |
RANUNCULACEAE |
| Ranunculus inamoenus Greene |
RANUNCULACEAE |
| Ranunculus macounii Britton |
RANUNCULACEAE |
| Ratibida tagetes (James) Barnhart |
ASTERACEAE |
| Redfieldia flexuosa (Thurber ex A. Gray) Vasey |
POACEAE |
| Reseda lutea L. |
RESEDACEAE |
| Rhamnus cathartica L. |
RHAMNACEAE |
| Rhodiola integrifolia Rafinesque |
CRASSULACEAE |
| Rhus aromatica Aiton ssp trilobata (Nuttall ex Torrey & Gray) W. A. Weber |
ANACARDIACEAE |
| Rhus glabra L. |
ANACARDIACEAE |
| Ribes americanum P. Miller |
GROSSULARIACEAE |
| Ribes aureum Pursh |
GROSSULARIACEAE |
| Ribes cereum Douglas |
GROSSULARIACEAE |
| Ribes inerme Rydberg |
GROSSULARIACEAE |
| Ribes leptanthum A. Gray |
GROSSULARIACEAE |
| Ribes montigenum McClatchie |
GROSSULARIACEAE |
| Robinia neomexicana A. Gray |
FABACEAE |
| Rorippa palustris (L.) Besser |
BRASSICACEAE |
| Rorippa sinuata (Nuttall in Torrey & Gray) A. S. Hitchcock |
BRASSICACEAE |
| Rorippa sphaerocarpa (A. Gray) Britton |
BRASSICACEAE |
| Rosa arkansana T. C. Porter |
ROSACEAE |
| Rosa sayi Schweinitz |
ROSACEAE |
| Rosa woodsii Lindley |
ROSACEAE |
| Rubacer parviflorum (Nuttall) Rydberg |
ROSACEAE |
| Rubus idaeus L. ssp melanolasius (Dieck) Focke |
ROSACEAE |
| Rudbeckia hirta L. |
ASTERACEAE |
| Rumex crispus L. |
POLYGONACEAE |
| Rumex triangulivalvis (Danser) Rechinger f. |
POLYGONACEAE |
| Rumex venosus Pursh |
POLYGONACEAE |
| Rydbergia grandiflora (Torrey & Gray) Greene |
ASTERACEAE |
| Sabina monosperma (Engelmann) Rydberg |
CUPRESSACEAE |
| Sabina scopulorum (Sargent) Rydberg |
CUPRESSACEAE |
| Salix amygdaloides Andersson |
SALICACEAE |
| Salix bebbiana Sargent |
SALICACEAE |
| Salix brachycarpa Nuttall |
SALICACEAE |
| Salix exigua Nuttall |
SALICACEAE |
| Salix exigua Nuttall ssp exigua |
SALICACEAE |
| Salix fragilis L. |
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 purpurea L. |
SALICACEAE |
| Salix reticulata L. ssp nivalis (Hooker) Löve et al. |
SALICACEAE |
| Salsola australis R. Brown |
CHENOPODIACEAE |
| Salsola collina Pallas |
CHENOPODIACEAE |
| Salvia reflexa Hornemann |
LAMIACEAE |
| Sambucus microbotrys Rydberg |
CAPRIFOLIACEAE |
| Sanicula marilandica L. |
APIACEAE |
| Saxifraga rivularis L. |
SAXIFRAGACEAE |
| Schedonnardus paniculatus (Nuttall) Trelease |
POACEAE |
| Schizachne purpurascens (Torrey) Swallen |
POACEAE |
| Schizachyrium scoparium (Michaux) Nash |
POACEAE |
| Schkuhria multiflora Hooker & Arnott |
ASTERACEAE |
| Schoenoplectus acutus (Mühlenberg) Löve & Löve |
CYPERACEAE |
| Schoenoplectus pungens (M. Vahl) Palla |
CYPERACEAE |
| Schoenoplectus validus (Vahl) Löve & Löve |
CYPERACEAE |
| Scirpus microcarpus J. & K. Presl |
CYPERACEAE |
| Scrophularia lanceolata Pursh |
SCROPHULARIACEAE |
| Scutellaria brittonii T. C. Porter |
LAMIACEAE |
| Scutellaria galericulata L. var epilobiifolia (Hamilton) Jordal |
LAMIACEAE |
| Securigera varia (L.) Lassen |
FABACEAE |
| Selaginella densa Rydberg |
SELAGINELLACEAE |
| Selaginella mutica D. C. Eaton |
SELAGINELLACEAE |
| Selaginella standleyi Maxon |
SELAGINELLACEAE |
| Selaginella underwoodii Hieronymus |
SELAGINELLACEAE |
| Selaginella weatherbiana Tryon |
SELAGINELLACEAE |
| Senecio eremophilus Richardson ssp kingii (Rydberg) Douglas & R.-Douglas |
ASTERACEAE |
| Senecio flaccidus Lessing var. douglasii (DeCandolle) Turner & Barkley |
ASTERACEAE |
| Senecio fremontii Torrey & Gray ssp blitoides (Greene) W. A. Weber |
ASTERACEAE |
| Senecio integerrimus Nuttall |
ASTERACEAE |
| Senecio spartioides Torrey & Gray |
ASTERACEAE |
| Senecio wootonii Greene |
ASTERACEAE |
| Setaria viridis (L.) P. Beauvois |
POACEAE |
| Shinnersoseris rostrata (A. Gray) Tomb |
ASTERACEAE |
| Sibbaldia procumbens L. |
ROSACEAE |
| Sidalcea neomexicana A. Gray |
MALVACEAE |
| Silene acaulis (L.) L. ssp subacaulescens (F. N. Williams) Hitchcock & Maguire |
CARYOPHYLLACEAE |
| Silene antirrhina L. |
CARYOPHYLLACEAE |
| Silene scouleri Hooker ssp hallii (S. Watson) Hitchcock & Maguire |
CARYOPHYLLACEAE |
| Silphium laciniatum L. |
ASTERACEAE |
| Sisymbrium altissimum L. |
BRASSICACEAE |
| Sisyrinchium montanum Greene |
IRIDACEAE |
| Sisyrinchium pallidum Cholewa & Henderson |
IRIDACEAE |
| Smilax lasioneuron Hooker |
SMILACACEAE |
| Solanum heterodoxum Dunal |
SOLANACEAE |
| Solanum triflorum Nuttall |
SOLANACEAE |
| Solidago canadensis L. |
ASTERACEAE |
| Solidago missouriensis Nuttall |
ASTERACEAE |
| Solidago mollis Bartling |
ASTERACEAE |
| Solidago multiradiata Aiton |
ASTERACEAE |
| Solidago nana Nuttall |
ASTERACEAE |
| Solidago nemoralis Aiton var longipetiolata (Mackenzie & Bush) Palmer & Steyermark |
ASTERACEAE |
| Solidago simplex Humboldt, Bonpland & Kunth var. simplex |
ASTERACEAE |
| Solidago speciosa Nuttall var pallida T. C. Porter |
ASTERACEAE |
| Solidago velutina De Candolle |
ASTERACEAE |
| Sorbus aucuparia L. |
ROSACEAE |
| Sorbus scopulina Greene |
ROSACEAE |
| Sparganium angustifolium Michaux |
SPARGANIACEAE |
| Sparganium eurycarpum Engelmann ex A. Gray |
SPARGANIACEAE |
| Sphaeralcea coccinea (Pursh) Rydberg |
MALVACEAE |
| Sporobolus airoides (Torrey) Torrey |
POACEAE |
| Sporobolus cryptandrus (Torrey) A. Gray |
POACEAE |
| Sporobolus giganteus Nash |
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 longifolia Mühlenberg ex Willdenow |
ALSINACEAE |
| Stellaria longipes Goldie |
ALSINACEAE |
| Streptopus fassettii Löve & Löve |
UVULARIACEAE |
| Swertia perennis L. |
GENTIANACEAE |
| Swida sericea (L.) Holub |
CORNACEAE |
| Symphoricarpos albus (L.) S. F. Blake |
CAPRIFOLIACEAE |
| Symphoricarpos occidentalis Hooker |
CAPRIFOLIACEAE |
| Talinum parviflorum Nuttall ex Torrey & Gray |
PORTULACACEAE |
| Taraxacum officinale G. H. Weber ex Wiggers |
ASTERACEAE |
| Telesonix jamesii (Torrey) Rafinesque |
SAXIFRAGACEAE |
| Teloxys botrys (L.) W. A. Weber |
CHENOPODIACEAE |
| Teloxys graveolens (Willdenow) W. A. Weber |
CHENOPODIACEAE |
| Tetraneuris acaulis (Pursh) Greene |
ASTERACEAE |
| Tetraneuris acaulis (Pursh) Greene var acaulis |
ASTERACEAE |
| Tetraneuris scaposa (De Candolle) Greene var scaposa |
ASTERACEAE |
| Thalictrum fendleri Engelmann ex A. Gray |
THALICTRACEAE |
| Thelesperma filifolium (Hooker) A. Gray |
ASTERACEAE |
| Thelesperma filifolium (Hooker) A. Gray var intermedium (Rydberg) Shinners |
ASTERACEAE |
| Thelesperma megapotamicum (Sprengel) Kuntze |
ASTERACEAE |
| Thermopsis divaricarpa A. Nelson |
FABACEAE |
| Thermopsis rhombifolia (Nuttall ex Pursh) Richardson |
FABACEAE |
| Thlaspi arvense L. |
BRASSICACEAE |
| Thymophylla aurea (A. Gray) Greene |
ASTERACEAE |
| Tithymalus brachyceras (Engelmann) Small |
EUPHORBIACEAE |
| Tithymalus uralensis (Fischer ex Link) Prokhanov |
EUPHORBIACEAE |
| Tonestus pygmaeus (Torrey & Gray) A. Nelson |
ASTERACEAE |
| Townsendia grandiflora Nuttall |
ASTERACEAE |
| Townsendia hookeri Beaman |
ASTERACEAE |
| 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 pratensis L. |
ASTERACEAE |
| Tribulus terrestris L. |
ZYGOPHYLLACEAE |
| Trifolium dasyphyllum Torrey & Gray |
FABACEAE |
| Trifolium hybridum L. |
FABACEAE |
| Trifolium nanum Torrey |
FABACEAE |
| Trifolium pratense L. |
FABACEAE |
| Trifolium repens L. |
FABACEAE |
| Triplasis purpurea (Walter) Chapman |
POACEAE |
| Trisetum montanum Vasey |
POACEAE |
| Trisetum spicatum (L.) Richter ssp congdonii (Scribner & Merrill) Hultén |
POACEAE |
| Typha latifolia L. |
TYPHACEAE |
| Ulmus pumila L. |
ULMACEAE |
| Unamia alba (Nuttall) Rydberg |
ASTERACEAE |
| 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 |
| Verbena stricta Ventenat |
VERBENACEAE |
| Vernonia marginata (Torrey) Rafinesque |
ASTERACEAE |
| 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 |
| Viburnum edule (Michaux) Rafinesque |
CAPRIFOLIACEAE |
| Vicia americana Mühlenberg |
FABACEAE |
| Vicia americana Mühlenberg var minor Hooker |
FABACEAE |
| Viola adunca J. E. Smith |
VIOLACEAE |
| Viola biflora L. |
VIOLACEAE |
| Viola nuttallii Pursh |
VIOLACEAE |
| Viola pedatifida G. Don |
VIOLACEAE |
| Viola rydbergii Greene |
VIOLACEAE |
| Viola scopulorum (A. Gray) Greene |
VIOLACEAE |
| Viola sororia Willdenow |
VIOLACEAE |
| Virgulaster ascendens (Lindley ex Hooker) Semple |
ASTERACEAE |
| Virgulus falcatus (Lindley) Reveal & Keener |
ASTERACEAE |
| Virgulus fendleri (A. Gray) Reveal & Keener |
ASTERACEAE |
| Virgulus novae-angliae (L.) Reveal & Keener |
ASTERACEAE |
| Vitis riparia Michaux ssp riparia |
VITACEAE |
| Woodsia oregana D.C. Eaton ssp cathcartiana (Robbinson) Windham |
DRYOPTERIDACEAE |
| Woodsia scopulina D. C. Eaton |
DRYOPTERIDACEAE |
| Xanthium strumarium L. |
ASTERACEAE |
| Ximenesia encelioides Cavanilles |
ASTERACEAE |
| Yucca glauca Nuttall in Fraser |
AGAVACEAE |
| Zinnia grandiflora Nuttall |
ASTERACEAE |
