142 Records
| Citation | Family Name |
| Abronia fragrans Nuttall ex Hooker |
NYCTAGINACEAE |
| Allium textile Nelson & Macbride |
ALLIACEAE |
| Amaranthus arenicola I. M. Johnston |
AMARANTHACEAE |
| Amaranthus palmeri S. Watson |
AMARANTHACEAE |
| Argemone squarrosa Greene |
PAPAVERACEAE |
| Asclepias speciosa Torrey |
ASCLEPIADACEAE |
| Asclepias subverticillata (A. Gray) Vail |
ASCLEPIADACEAE |
| Asclepias uncialis Greene |
ASCLEPIADACEAE |
| Astragalus missouriensis Nuttall |
FABACEAE |
| Astragalus pectinatus (Hooker) Douglas in Hooker |
FABACEAE |
| Astragalus racemosus Pursh |
FABACEAE |
| Bassia sieversiana (Pallas) W. A. Weber |
CHENOPODIACEAE |
| Bolboschoenus maritimus (L.) Palla ssp paludosus (A. Nelson) Löve & Löve |
CYPERACEAE |
| Brickellia eupatorioides (L.) Shinners |
ASTERACEAE |
| Bromus japonicus Thunberg |
POACEAE |
| Buchloë dactyloides (Nuttall) Engelmann |
POACEAE |
| Caesalpinia jamesii (Torrey & Gray) Fisher |
FABACEAE |
| Callirhoë involucrata (Torrey & Gray) A. Gray |
MALVACEAE |
| Calylophus lavandulifolius (Torrey & Gray) Raven |
ONAGRACEAE |
| Calylophus serrulatus (Nuttall) Raven |
ONAGRACEAE |
| Carex emoryi Dewey in Torrey |
CYPERACEAE |
| Chamaesaracha conioides (Moricand) Britton |
SOLANACEAE |
| Chamaesaracha coronopus (Dunal) A. Gray |
SOLANACEAE |
| Chamaesyce missurica (Rafinesque) Shinners |
EUPHORBIACEAE |
| Cheilanthes féei T. Moore |
PTERIDACEAE |
| Cheilanthes wootonii Maxon |
PTERIDACEAE |
| Chenopodium incanum (S. Watson) Heller |
CHENOPODIACEAE |
| Chondrosum barbatum (Lagasca) Clayton |
POACEAE |
| Cirsium undulatum (Nuttall) Sprengel |
ASTERACEAE |
| Cladothrix lanuginosa (Nuttall ex Moquin) Bentham & Hooker |
AMARANTHACEAE |
| Comandra umbellata (L.) Nuttall ssp pallida (A. De Candolle) Piehl |
SANTALACEAE |
| Convolvulus equitans Bentham |
CONVOLVULACEAE |
| Corydalis curvisiliqua Engelmann subsp. occidentalis (Engelmann ex A. Gray) W. A. Weber |
FUMARIACEAE |
| Coryphantha vivipara (Nuttall) Britton & Rose var vivipara |
CACTACEAE |
| Critesion jubatum (L.) Nevski |
POACEAE |
| Critesion pusillum (Nuttall) Löve |
POACEAE |
| Croton texensis (Klotsch) Müller-Argoviensis in De Candolle |
EUPHORBIACEAE |
| Cryptantha minima Rydberg |
BORAGINACEAE |
| Cucurbita foetidissima Humboldt, Bonpland, & Kunth |
CUCURBITACEAE |
| Cymopterus acaulis (Pursh) Rafinesque |
APIACEAE |
| Cymopterus montanus Torrey & Gray |
APIACEAE |
| Dalea cylindriceps Barneby |
FABACEAE |
| Dalea enneandra Nuttall |
FABACEAE |
| Dalea jamesii (Torrey) Torrey & Gray |
FABACEAE |
| Dalea lanata Sprengel |
FABACEAE |
| Dalea tenuifolia (A. Gray) Shinners |
FABACEAE |
| Delphinium carolinianum Walter ssp virescens (Nuttall) R. Brooks |
HELLEBORACEAE |
| Echinocereus viridiflorus Engelmann |
CACTACEAE |
| Elymus elymoides (Rafinesque) Swezey |
POACEAE |
| Engelmannia peristenia (Rafinesque) Goodman & Lawson |
ASTERACEAE |
| Erigeron bellidiastrum Nuttall |
ASTERACEAE |
| Eriochloa contracta A. S. Hitchcock |
POACEAE |
| Eriogonum annuum Nuttall |
POLYGONACEAE |
| Eriogonum lachnogynum Torrey ex Bentham in A. De Candolle |
POLYGONACEAE |
| Erioneuron pilosum (Buckley) Nash |
POACEAE |
| Erysimum asperum (Nuttall) De Candolle |
BRASSICACEAE |
| Euploca convolvulacea Nuttall ssp convolvulacea |
BORAGINACEAE |
| Evax prolifera Nuttall ex De Candolle |
ASTERACEAE |
| Evolvulus nuttallianus Schultes |
CONVOLVULACEAE |
| Flaveria campestris J. R. Johnston |
ASTERACEAE |
| Frasera coloradensis (C. M. Rogers) D. Post |
GENTIANACEAE |
| Gaillardia pulchella Fougeroux |
ASTERACEAE |
| Gaura coccinea Nuttall ex Pursh |
ONAGRACEAE |
| Grammica umbellata (Humboldt, Bonpland, & Kunth) Hadaç & Chrtek |
CUSCUTACEAE |
| Grindelia inornata Greene |
ASTERACEAE |
| Halerpestes cymbalaria (Pursh) Greene ssp saximontana (Fernald) Moldenke |
RANUNCULACEAE |
| Hecatonia scelerata (L.) Fourreau |
RANUNCULACEAE |
| Helianthus annuus L. |
ASTERACEAE |
| Helianthus maximilianii Schrader |
ASTERACEAE |
| Hilaria jamesii (Torrey) Bentham |
POACEAE |
| Hippochaete laevigata (A. Braun) Farwell |
EQUISETACEAE |
| Hybanthus verticillatus (Ortega) Baillon |
VIOLACEAE |
| Hymenopappus tenuifolius Pursh |
ASTERACEAE |
| Ipomopsis laxiflora (Coulter) V. Grant |
POLEMONIACEAE |
| Leiostemon ambiguus (Torrey) Greene |
SCROPHULARIACEAE |
| Lepidium densiflorum Schrader |
BRASSICACEAE |
| Lesquerella ovalifolia Rydberg |
BRASSICACEAE |
| Leucelene ericoides (Torrey & Gray) Greene |
ASTERACEAE |
| Lithospermum incisum Lehmann |
BORAGINACEAE |
| Lupinus pusillus Pursh |
FABACEAE |
| Lygodesmia juncea (Pursh) D. Don |
ASTERACEAE |
| Lysimachia ciliata L. |
PRIMULACEAE |
| Machaeranthera pinnatifida (Hooker) Shinners |
ASTERACEAE |
| Machaeranthera tanacetifolia (Humboldt, Bonpland, & Kunth) Nees |
ASTERACEAE |
| Melampodium leucanthum Torrey & Gray |
ASTERACEAE |
| Mesynium puberulum (Engelmann in A. Gray) W. A. Weber |
LINACEAE |
| Monroa squarrosa (Nuttall) Torrey |
POACEAE |
| Muhlenbergia arenicola Buckley |
POACEAE |
| Muhlenbergia asperifolia (Nees & Meyen ex Trinius) Parodi |
POACEAE |
| Muhlenbergia racemosa (Michaux) Britton, Sterns, & Poggenberg |
POACEAE |
| Nuttallia reverchonii (Urban & Gilg) W. A. Weber |
LOASACEAE |
| Oenothera albicaulis Pursh |
ONAGRACEAE |
| Oenothera latifolia (Rydberg) Munz |
ONAGRACEAE |
| Oligosporus filifolius (Torrey) Poljakov |
ASTERACEAE |
| Oreocarya thyrsiflora Greene |
BORAGINACEAE |
| Orobanche ludoviciana Nuttall |
OROBANCHACEAE |
| Oxybaphus glaber S. Watson |
NYCTAGINACEAE |
| Oxybaphus linearis (Pursh) B. L. Robinson |
NYCTAGINACEAE |
| Oxybaphus nyctagineus (Michaux) T. C. Porter in Porter & Coulter |
NYCTAGINACEAE |
| Packera plattensis (Nuttall) Weber & Löve |
ASTERACEAE |
| Packera tridenticulata (Rydberg) Weber & Löve |
ASTERACEAE |
| Palafoxia sphacelata (Nuttall ex Torrey) Cory |
ASTERACEAE |
| Panicum capillare L. |
POACEAE |
| Panicum hillmanii Chase |
POACEAE |
| Paronychia jamesii Torrey & Gray |
ALSINACEAE |
| Paronychia sessiliflora Nuttall |
ALSINACEAE |
| Pascopyrum smithii (Rydberg) Löve |
POACEAE |
| Penstemon albidus Nuttall |
SCROPHULARIACEAE |
| Penstemon angustifolius Nuttall ex Pursh |
SCROPHULARIACEAE |
| Penstemon angustifolius Nuttall ex Pursh ssp caudatus (Heller) Keck |
SCROPHULARIACEAE |
| Phyla cuneifolia (Torrey) Greene |
VERBENACEAE |
| Picradenia odorata (De Candolle) Britton |
ASTERACEAE |
| Picradeniopsis oppositifolia (Nuttall) Rydberg |
ASTERACEAE |
| Plantago patagonica Jacquin |
PLANTAGINACEAE |
| Poa trivialis L. |
POACEAE |
| Poinsettia dentata (Michaux) Klotsch & Garcke |
EUPHORBIACEAE |
| Polanisia dodecandra (L.) De Candolle |
CAPPARACEAE |
| Polygala alba Nuttall |
POLYGALACEAE |
| Psoralidium tenuiflorum (Pursh) Rydberg |
FABACEAE |
| Quincula lobata (Torrey) Rafinesque |
SOLANACEAE |
| Ratibida columnifera (Nuttall) Wooton & Standley |
ASTERACEAE |
| Rhus aromatica Aiton ssp trilobata (Nuttall ex Torrey & Gray) W. A. Weber |
ANACARDIACEAE |
| Ribes aureum Pursh |
GROSSULARIACEAE |
| Sabina monosperma (Engelmann) Rydberg |
CUPRESSACEAE |
| Salix amygdaloides Andersson |
SALICACEAE |
| Senecio riddellii Torrey & Gray |
ASTERACEAE |
| Solanum rostratum Dunal |
SOLANACEAE |
| Solanum triflorum Nuttall |
SOLANACEAE |
| Solidago velutina De Candolle |
ASTERACEAE |
| Sphaeralcea angustifolia (Cavanilles) G. Don var cuspidata A. Gray |
MALVACEAE |
| Sphaeralcea coccinea (Pursh) Rydberg |
MALVACEAE |
| Sporobolus cryptandrus (Torrey) A. Gray |
POACEAE |
| Stephanomeria pauciflora (Torrey) A. Nelson |
ASTERACEAE |
| Talinum parviflorum Nuttall ex Torrey & Gray |
PORTULACACEAE |
| Tamarix ramosissima Ledebour |
TAMARICACEAE |
| Tetraneuris acaulis (Pursh) Greene |
ASTERACEAE |
| Thelesperma megapotamicum (Sprengel) Kuntze |
ASTERACEAE |
| Tradescantia occidentalis (Britton) Smyth var scopulorum (Rose) Anderson & Woodson |
COMMELINACEAE |
| Tragopogon dubius Scopoli ssp major (Jacquin) Vollmann |
ASTERACEAE |
| Tribulus terrestris L. |
ZYGOPHYLLACEAE |
| Vexibia nuttalliana (B. Turner) W. A. Weber |
FABACEAE |
| Vulpia octoflora (Walter) Rydberg |
POACEAE |
