302 Records
| Citation | Family Name |
| Abronia fragrans Nuttall ex Hooker |
NYCTAGINACEAE |
| Achillea lanulosa Nuttall |
ASTERACEAE |
| Achnatherum hymenoides (Roemer & Schultes) Barkworth |
POACEAE |
| Acosta diffusa (Lamarck) Sojak |
ASTERACEAE |
| Agrostis gigantea Roth |
POACEAE |
| Agrostis scabra Willdenow |
POACEAE |
| Aliciella pinnatifida (Nuttall ex A. Gray) J.M. Porter |
POLEMONIACEAE |
| Allium textile Nelson & Macbride |
ALLIACEAE |
| 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 blitoides S. Watson |
AMARANTHACEAE |
| Amaranthus retroflexus L. |
AMARANTHACEAE |
| Ambrosia acanthicarpa Hooker |
ASTERACEAE |
| Ambrosia psilostachya De Candolle var coronopifolia (Torrey & Gray) Farwell |
ASTERACEAE |
| Ambrosia trifida L. |
ASTERACEAE |
| Andropogon gerardii Vitman |
POACEAE |
| Antennaria parvifolia Nuttall |
ASTERACEAE |
| Aphyllon fasciculatum (Nuttall) Torrey & Gray |
OROBANCHACEAE |
| Argemone polyanthemos (Fedde) G. Ownbey |
PAPAVERACEAE |
| Aristida purpurea Nuttall |
POACEAE |
| Artemisia carruthii Wood {ex} Carruth |
ASTERACEAE |
| Artemisia frigida Willdenow |
ASTERACEAE |
| Artemisia ludoviciana Nuttall |
ASTERACEAE |
| Asclepias speciosa Torrey |
ASCLEPIADACEAE |
| Asparagus officinalis L. |
ASPARAGACEAE |
| Astragalus adsurgens Pallas var robustior Hooker |
FABACEAE |
| Astragalus bisulcatus (Hooker) A. Gray |
FABACEAE |
| Astragalus ceramicus Sheldon |
FABACEAE |
| Astragalus drummondii Douglas ex Hooker |
FABACEAE |
| Astragalus gracilis Nuttall |
FABACEAE |
| Astragalus missouriensis Nuttall |
FABACEAE |
| Astragalus parryi A. Gray |
FABACEAE |
| Astragalus pectinatus (Hooker) Douglas in Hooker |
FABACEAE |
| Astragalus racemosus Pursh |
FABACEAE |
| Astragalus shortianus Nuttall in Torrey & Gray |
FABACEAE |
| Astragalus tenellus Pursh |
FABACEAE |
| Atriplex saccaria S. Watson |
CHENOPODIACEAE |
| Bouteloua curtipendula (Michaux) Torrey |
POACEAE |
| Brachyactis ciliata Ledebour ssp angusta (Lindley) A. Jones |
ASTERACEAE |
| Breea arvensis (L.) Lessing |
ASTERACEAE |
| Brickellia eupatorioides (L.) Shinners |
ASTERACEAE |
| Bromopsis inermis (Leysser) Holub |
POACEAE |
| Bromus japonicus Thunberg |
POACEAE |
| Bromus squarrosus L. |
POACEAE |
| Buchloë dactyloides (Nuttall) Engelmann |
POACEAE |
| Calamovilfa longifolia (Hooker) Scribner in Hackel |
POACEAE |
| Calylophus serrulatus (Nuttall) Raven |
ONAGRACEAE |
| Capsella bursa-pastoris (L.) Medicus |
BRASSICACEAE |
| Carduus nutans L. ssp macrolepis (Peterman) Kazmi |
ASTERACEAE |
| Carex filifolia Nuttall |
CYPERACEAE |
| Carex lanuginosa Michaux |
CYPERACEAE |
| Carex nebrascensis Dewey |
CYPERACEAE |
| Carex pensylvanica Lamarck ssp heliophila (Mackenzie) W. A. Weber |
CYPERACEAE |
| Carex stenophylla Wahlenberg ssp eleocharis (L. H. Bailey) Hultén |
CYPERACEAE |
| Carex utriculata F. Boott |
CYPERACEAE |
| Castilleja integra A. Gray in Torrey |
SCROPHULARIACEAE |
| Castilleja sessiliflora Pursh |
SCROPHULARIACEAE |
| Ceanothus herbaceus Rafinesque |
RHAMNACEAE |
| Centaurium pulchellum (Swartz) Druce |
GENTIANACEAE |
| Chamaesyce glyptosperma (Engelmann) Small |
EUPHORBIACEAE |
| Chamaesyce missurica (Rafinesque) Shinners |
EUPHORBIACEAE |
| Cheilanthes féei T. Moore |
PTERIDACEAE |
| Cheilanthes fendleri Hooker |
PTERIDACEAE |
| Chenopodium glaucum L. |
CHENOPODIACEAE |
| Chenopodium incanum (S. Watson) Heller |
CHENOPODIACEAE |
| Chenopodium leptophyllum (Nuttall ex Moquin) S. Watson |
CHENOPODIACEAE |
| Chenopodium subglabrum (S. Watson) A. Nelson |
CHENOPODIACEAE |
| Chenopodium watsonii A. Nelson |
CHENOPODIACEAE |
| Chondrosum gracile Humboldt, Bonpland, & Kunth |
POACEAE |
| Chondrosum hirsutum (Lagasca) Sweet |
POACEAE |
| Chorispora tenella (Pallas) De Candolle |
BRASSICACEAE |
| Chrysothamnus nauseosus (Pallas ex Pursh) Britton ssp graveolens (Nuttall) Piper |
ASTERACEAE |
| Chrysothamnus nauseosus (Pallas ex Pursh) Britton ssp nauseosus |
ASTERACEAE |
| Cirsium canescens Nuttall |
ASTERACEAE |
| Cirsium undulatum (Nuttall) Sprengel |
ASTERACEAE |
| Cleome serrulata Pursh |
CAPPARACEAE |
| Comandra umbellata (L.) Nuttall ssp pallida (A. De Candolle) Piehl |
SANTALACEAE |
| Conringia orientalis (L.) Dumont de Cours |
BRASSICACEAE |
| Convolvulus arvensis L. |
CONVOLVULACEAE |
| Conyza canadensis (L.) Cronquist |
ASTERACEAE |
| Coreopsis tinctoria Nuttall |
ASTERACEAE |
| Critesion jubatum (L.) Nevski |
POACEAE |
| Critesion pusillum (Nuttall) Löve |
POACEAE |
| Croton texensis (Klotsch) Müller-Argoviensis in De Candolle |
EUPHORBIACEAE |
| Cryptantha fendleri (A. Gray) Greene |
BORAGINACEAE |
| Cryptantha minima Rydberg |
BORAGINACEAE |
| Cucurbita foetidissima Humboldt, Bonpland, & Kunth |
CUCURBITACEAE |
| Cycloloma atriplicifolium (Sprengel) Coulter |
CHENOPODIACEAE |
| Cymopterus acaulis (Pursh) Rafinesque |
APIACEAE |
| Cymopterus montanus Torrey & Gray |
APIACEAE |
| Cynoglossum officinale L. |
BORAGINACEAE |
| Dalea candida Willdenow var oligophylla (Torrey) Shinners |
FABACEAE |
| Danthonia spicata (L.) P. Beauvois ex Roemer & Schultes var pinetorum Piper |
POACEAE |
| Delphinium nuttallianum Pritzel ex Walpers |
HELLEBORACEAE |
| Descurainia sophia (L.) Webb ex Prantl |
BRASSICACEAE |
| Dichanthelium wilcoxianum (Vasey) Freckmann |
POACEAE |
| Distichlis stricta (Torrey) Rydberg |
POACEAE |
| Dyssodia papposa (Ventenat) A. S. Hitchcock |
ASTERACEAE |
| Echinocereus viridiflorus Engelmann |
CACTACEAE |
| Echinochloa crus-galli (L.) P. Beauvois |
POACEAE |
| Elaeagnus angustifolia L. |
ELAEAGNACEAE |
| Eleocharis palustris (L.) Roemer & Schultes |
CYPERACEAE |
| Eleocharis parvula (Roemer & Schultes) Link var anachaeta (Torrey) Svenson |
CYPERACEAE |
| Ellisia nyctelea (L.) L. |
HYDROPHYLLACEAE |
| Elymus canadensis L. |
POACEAE |
| Elymus elymoides (Rafinesque) Swezey |
POACEAE |
| Elymus macounii Vasey |
POACEAE |
| Elymus trachycaulus (Link) Gould |
POACEAE |
| Eragrostis barrelieri Daveau in Morot |
POACEAE |
| Eragrostis cilianensis (Allioni) F. T. Hubbard |
POACEAE |
| Eremogone hookeri (Nuttall ex Torrey & Gray) W. A. Weber |
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 canus A. Gray |
ASTERACEAE |
| Erigeron divergens Torrey & Gray |
ASTERACEAE |
| Erigeron pumilus Nuttall |
ASTERACEAE |
| Erigeron vetensis Rydberg |
ASTERACEAE |
| Eriogonum annuum Nuttall |
POLYGONACEAE |
| Eriogonum effusum Nuttall |
POLYGONACEAE |
| Erodium cicutarium (L.) L'Heritier |
GENTIANACEAE |
| Erysimum asperum (Nuttall) De Candolle |
BRASSICACEAE |
| Erysimum capitatum (Douglas) Greene |
BRASSICACEAE |
| Evolvulus nuttallianus Schultes |
CONVOLVULACEAE |
| Fallopia convolvulus (L.) Löve |
POLYGONACEAE |
| Festuca pratensis Hudson |
POACEAE |
| Froelichia gracilis (Hooker) Moquin |
AMARANTHACEAE |
| Gaura coccinea Nuttall ex Pursh |
ONAGRACEAE |
| Gaura mollis James |
ONAGRACEAE |
| Glycyrrhiza lepidota Pursh |
FABACEAE |
| Hedeoma hispidum Pursh |
LAMIACEAE |
| Helianthus annuus L. |
ASTERACEAE |
| Helianthus petiolaris Nuttall |
ASTERACEAE |
| Hesperostipa comata (Trinius & Ruprecht) Barkworth |
POACEAE |
| Heterotheca villosa (Pursh) Shinners |
ASTERACEAE |
| Hippochaete laevigata (A. Braun) Farwell |
EQUISETACEAE |
| Hymenopappus filifolius Hooker var cinereus (Rydberg) I. M. Johnston |
ASTERACEAE |
| Hymenopappus tenuifolius Pursh |
ASTERACEAE |
| Ipomopsis aggregata (Pursh) V. Grant ssp candida (Rydberg) V. & A. Grant |
POLEMONIACEAE |
| Ipomopsis laxiflora (Coulter) V. Grant |
POLEMONIACEAE |
| Ipomopsis spicata (Nuttall) V. Grant |
POLEMONIACEAE |
| Juncus arcticus Willdenow ssp ater (Rydberg) Hultén |
JUNCACEAE |
| Juncus bufonius L. |
JUNCACEAE |
| Juncus torreyi Coville |
JUNCACEAE |
| Koeleria macrantha (Ledebour) Schultes |
POACEAE |
| Krascheninnikovia lanata (Pursh) Meeuse & Smit |
CHENOPODIACEAE |
| Lactuca serriola L. |
ASTERACEAE |
| Lappula marginata (Bieberstein) Guerke |
BORAGINACEAE |
| Lathyrus eucosmus Butters & St. John |
FABACEAE |
| Lathyrus polymorphus Nuttall |
FABACEAE |
| Lathyrus polymorphus Nuttall ssp incanus (Small & Rydberg) C. L. Hitchcock |
FABACEAE |
| Lemna minor L. |
LEMNACEAE |
| Lemna turionifera Landolt |
LEMNACEAE |
| Lepidium densiflorum Schrader |
BRASSICACEAE |
| Lesquerella ludoviciana (Nuttall) S. Watson |
BRASSICACEAE |
| Lesquerella montana (A. Gray) S. Watson |
BRASSICACEAE |
| Leucocrinum montanum Nuttall ex A. Gray |
LILIACEAE |
| Liatris punctata Hooker |
ASTERACEAE |
| Lithospermum multiflorum Torrey ex A. Gray |
BORAGINACEAE |
| Lomatium orientale Coulter & Rose |
APIACEAE |
| Lupinus argenteus Pursh |
FABACEAE |
| Lupinus caudatus Kellogg |
FABACEAE |
| Lupinus plattensis S. Watson |
FABACEAE |
| Lupinus pusillus Pursh |
FABACEAE |
| Lygodesmia juncea (Pursh) D. Don |
ASTERACEAE |
| Machaeranthera canescens (Pursh) A. Gray |
ASTERACEAE |
| Machaeranthera pinnatifida (Hooker) Shinners |
ASTERACEAE |
| Machaeranthera tanacetifolia (Humboldt, Bonpland, & Kunth) Nees |
ASTERACEAE |
| Malva neglecta Wallroth |
MALVACEAE |
| Mariscus schweinitzii (Torrey) Koyama |
CYPERACEAE |
| Medicago lupulina L. |
FABACEAE |
| Medicago sativa L. |
FABACEAE |
| Melilotus albus Medicus |
FABACEAE |
| Melilotus officinale (L.) Pallas |
FABACEAE |
| Mertensia lanceolata (Pursh) A. De Candolle |
BORAGINACEAE |
| Monolepis nuttalliana (Schultes) Greene |
CHENOPODIACEAE |
| Monroa squarrosa (Nuttall) Torrey |
POACEAE |
| Muhlenbergia asperifolia (Nees & Meyen ex Trinius) Parodi |
POACEAE |
| Muhlenbergia montana (Nuttall) A. S. Hitchcock |
POACEAE |
| Muhlenbergia torreyi (Kunth) A. S. Hitchcock ex Bush |
POACEAE |
| Musineon divaricatum (Pursh) Rafinesque var divaricatum |
APIACEAE |
| Nassella viridula (Trinius) Barkworth |
POACEAE |
| Nothocalais cuspidata (Pursh) Greene |
ASTERACEAE |
| Nuttallia multiflora (Nuttall) Greene |
LOASACEAE |
| Nuttallia nuda (Pursh) Greene |
LOASACEAE |
| Oenothera albicaulis Pursh |
ONAGRACEAE |
| Oenothera caespitosa Nuttall ex Fraser |
ONAGRACEAE |
| Oenothera caespitosa Nuttall ex Fraser ssp caespitosa |
ONAGRACEAE |
| Oenothera canescens Torrey & Frémont |
ONAGRACEAE |
| Oenothera coronopifolia Torrey & Gray |
ONAGRACEAE |
| Oenothera latifolia (Rydberg) Munz |
ONAGRACEAE |
| Oenothera villosa Thunberg ssp strigosa (Rydberg) Dietrich & Raven |
ONAGRACEAE |
| Oligosporus caudatus (Michaux) Poljakov |
ASTERACEAE |
| Onopordum acanthium L. |
ASTERACEAE |
| Onosmodium molle Michaux ssp occidentale (Mackenzie) Cochrane |
BORAGINACEAE |
| Opuntia macrorhiza Engelmann |
CACTACEAE |
| Opuntia polyacantha Haworth |
CACTACEAE |
| Oreobatus deliciosus (James ex Torrey) Rydberg |
ROSACEAE |
| Oreocarya suffruticosa (Torrey) Greene |
BORAGINACEAE |
| Oxybaphus glaber S. Watson |
NYCTAGINACEAE |
| Oxybaphus hirsutus (Pursh) Sweet in De Candolle |
NYCTAGINACEAE |
| Oxybaphus linearis (Pursh) B. L. Robinson |
NYCTAGINACEAE |
| Oxybaphus nyctagineus (Michaux) T. C. Porter in Porter & Coulter |
NYCTAGINACEAE |
| Oxytropis sericea Nuttall |
FABACEAE |
| Oönopsis engelmannii (A. Gray) Greene |
ASTERACEAE |
| Packera plattensis (Nuttall) Weber & Löve |
ASTERACEAE |
| Packera tridenticulata (Rydberg) Weber & Löve |
ASTERACEAE |
| Panicum virgatum L. |
POACEAE |
| Pascopyrum smithii (Rydberg) Löve |
POACEAE |
| Penstemon albidus Nuttall |
SCROPHULARIACEAE |
| Penstemon angustifolius Nuttall ex Pursh |
SCROPHULARIACEAE |
| Penstemon angustifolius Nuttall ex Pursh ssp angustifolius |
SCROPHULARIACEAE |
| Penstemon angustifolius Nuttall ex Pursh ssp caudatus (Heller) Keck |
SCROPHULARIACEAE |
| Penstemon secundiflorus Bentham in De Candolle |
SCROPHULARIACEAE |
| Penstemon virens Pennell ex Rydberg |
SCROPHULARIACEAE |
| Penstemon virgatus A. Gray ssp asa-grayi Crosswhite |
SCROPHULARIACEAE |
| Persicaria lapathifolia (L.) S. Gray |
POLYGONACEAE |
| Persicaria pensylvanica (L.) Gomez |
POLYGONACEAE |
| Phlox hoodii Richardson |
POLEMONIACEAE |
| Physalis hederifolia A. Gray var. comata (Rydberg) Waterfall |
SOLANACEAE |
| Physalis heterophylla Nees |
SOLANACEAE |
| Physalis virginiana P. Miller |
SOLANACEAE |
| Picradenia richardsonii Hooker var. floribunda (Gray) Weber |
ASTERACEAE |
| Picradeniopsis oppositifolia (Nuttall) Rydberg |
ASTERACEAE |
| Picradeniopsis woodhousei (A. Gray) Rydberg |
ASTERACEAE |
| Pinus ponderosa Douglas ex P. & C. Lawson ssp scopulorum (S. Watson) W. A. Weber |
PINACEAE |
| Plantago patagonica Jacquin |
PLANTAGINACEAE |
| Poa secunda J. Presl in K. Presl |
POACEAE |
| Podospermum laciniatum (L.) De Candolle |
ASTERACEAE |
| Polanisia dodecandra (L.) De Candolle |
CAPPARACEAE |
| Polygonum arenastrum Boreau |
POLYGONACEAE |
| Polygonum ramosissimum Michaux |
POLYGONACEAE |
| Polypogon monspeliensis (L.) Desfontaines |
POACEAE |
| Populus deltoides H. Marshall ssp monilifera (Aiton) Eckenwalder |
SALICACEAE |
| Psoralidium argophyllum (Pursh) Rydberg |
FABACEAE |
| Psoralidium lanceolatum (Pursh) Rydberg |
FABACEAE |
| Psoralidium tenuiflorum (Pursh) Rydberg |
FABACEAE |
| Pterogonum alatum (Torrey) Gross |
POLYGONACEAE |
| Puccinellia airoides Watson & Coulter |
POACEAE |
| Quincula lobata (Torrey) Rafinesque |
SOLANACEAE |
| Ratibida columnifera (Nuttall) Wooton & Standley |
ASTERACEAE |
| Rorippa sinuata (Nuttall in Torrey & Gray) A. S. Hitchcock |
BRASSICACEAE |
| Rosa arkansana T. C. Porter |
ROSACEAE |
| Rumex altissimus Wood |
POLYGONACEAE |
| Rumex crispus L. |
POLYGONACEAE |
| Rumex venosus Pursh |
POLYGONACEAE |
| Sabina scopulorum (Sargent) Rydberg |
CUPRESSACEAE |
| Salix amygdaloides Andersson |
SALICACEAE |
| Salix exigua Nuttall |
SALICACEAE |
| Salsola australis R. Brown |
CHENOPODIACEAE |
| Salvia reflexa Hornemann |
LAMIACEAE |
| Schedonnardus paniculatus (Nuttall) Trelease |
POACEAE |
| Schizachyrium scoparium (Michaux) Nash |
POACEAE |
| Schoenoplectus lacustris (L.) Palla |
CYPERACEAE |
| Schoenoplectus pungens (M. Vahl) Palla |
CYPERACEAE |
| Scutellaria brittonii T. C. Porter |
LAMIACEAE |
| Secale cereale L. |
POACEAE |
| Senecio integerrimus Nuttall |
ASTERACEAE |
| Senecio spartioides Torrey & Gray |
ASTERACEAE |
| Shinnersoseris rostrata (A. Gray) Tomb |
ASTERACEAE |
| Solanum rostratum Dunal |
SOLANACEAE |
| Solidago mollis Bartling |
ASTERACEAE |
| Sphaeralcea coccinea (Pursh) Rydberg |
MALVACEAE |
| Sporobolus airoides (Torrey) Torrey |
POACEAE |
| Sporobolus cryptandrus (Torrey) A. Gray |
POACEAE |
| Stephanomeria pauciflora (Torrey) A. Nelson |
ASTERACEAE |
| Suckleya suckleyana (Torrey) Rydberg |
CHENOPODIACEAE |
| Symphoricarpos occidentalis Hooker |
CAPRIFOLIACEAE |
| Talinum parviflorum Nuttall ex Torrey & Gray |
PORTULACACEAE |
| Tamarix ramosissima Ledebour |
TAMARICACEAE |
| Taraxacum officinale G. H. Weber ex Wiggers |
ASTERACEAE |
| Tetraneuris acaulis (Pursh) Greene |
ASTERACEAE |
| Thelesperma filifolium (Hooker) A. Gray |
ASTERACEAE |
| Thelesperma filifolium (Hooker) A. Gray var intermedium (Rydberg) Shinners |
ASTERACEAE |
| Thelesperma megapotamicum (Sprengel) Kuntze |
ASTERACEAE |
| Thermopsis rhombifolia (Nuttall ex Pursh) Richardson |
FABACEAE |
| Tithymalus uralensis (Fischer ex Link) Prokhanov |
EUPHORBIACEAE |
| Townsendia exscapa (Richardson) T. C. Porter |
ASTERACEAE |
| Tradescantia occidentalis (Britton) Smyth var scopulorum (Rose) Anderson & Woodson |
COMMELINACEAE |
| Tragopogon dubius Scopoli |
ASTERACEAE |
| Tragopogon porrifolius L. |
ASTERACEAE |
| Tribulus terrestris L. |
ZYGOPHYLLACEAE |
| Trifolium fragiferum L. |
FABACEAE |
| Trifolium repens L. |
FABACEAE |
| Triplasis purpurea (Walter) Chapman |
POACEAE |
| Triticum aestivum L. |
POACEAE |
| Typha angustifolia L. |
TYPHACEAE |
| Ulmus pumila L. |
ULMACEAE |
| Verbascum thapsus L. |
SCROPHULARIACEAE |
| Verbena bracteata Lagasca & Rodriguez |
VERBENACEAE |
| 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 |
| Vicia americana Mühlenberg var minor Hooker |
FABACEAE |
| Virgulus ericoides (L.) Reveal & Keener |
ASTERACEAE |
| Virgulus falcatus (Lindley) Reveal & Keener |
ASTERACEAE |
| Vulpia octoflora (Walter) Rydberg |
POACEAE |
| Xanthium strumarium L. |
ASTERACEAE |
| Ximenesia encelioides Cavanilles |
ASTERACEAE |
| Yucca glauca Nuttall in Fraser |
AGAVACEAE |
