275 Records
| Citation | Family Name |
| Abronia fragrans Nuttall ex Hooker |
NYCTAGINACEAE |
| Achillea lanulosa Nuttall |
ASTERACEAE |
| Achnatherum hymenoides (Roemer & Schultes) Barkworth |
POACEAE |
| Acroptilon repens (L.) De Candolle |
ASTERACEAE |
| Agaloma marginata (Pursh) Löve & Löve |
EUPHORBIACEAE |
| Agropyron desertorum Fischer ex Link |
POACEAE |
| Aliciella pinnatifida (Nuttall ex A. Gray) J.M. Porter |
POLEMONIACEAE |
| Allium textile Nelson & Macbride |
ALLIACEAE |
| Amaranthus albus L. |
AMARANTHACEAE |
| Amaranthus arenicola I. M. Johnston |
AMARANTHACEAE |
| Amaranthus blitoides S. Watson |
AMARANTHACEAE |
| Amaranthus palmeri S. Watson |
AMARANTHACEAE |
| Amaranthus retroflexus L. |
AMARANTHACEAE |
| Ambrosia acanthicarpa Hooker |
ASTERACEAE |
| Ambrosia grayi (A. Nelson) Shinners |
ASTERACEAE |
| Ambrosia linearis (Rydberg) Payne |
ASTERACEAE |
| Ambrosia psilostachya De Candolle var coronopifolia (Torrey & Gray) Farwell |
ASTERACEAE |
| Ambrosia tomentosa Nuttall |
ASTERACEAE |
| Andropogon gerardii Vitman |
POACEAE |
| Andropogon hallii Hackel |
POACEAE |
| Anisantha tectorum (L.) Nevski |
POACEAE |
| Argemone polyanthemos (Fedde) G. Ownbey |
PAPAVERACEAE |
| Aristida adscensionis L. |
POACEAE |
| Aristida divaricata Humboldt & Bonpland ex Willdenow |
POACEAE |
| Aristida purpurea Nuttall |
POACEAE |
| Aristida purpurea Nuttall var longiseta (Steudel) Vasey |
POACEAE |
| Artemisia ludoviciana Nuttall ssp ludoviciana |
ASTERACEAE |
| Asclepias arenaria Torrey |
ASCLEPIADACEAE |
| Asclepias engelmanniana Woodson |
ASCLEPIADACEAE |
| Asclepias latifolia (Torrey) Rafinesque |
ASCLEPIADACEAE |
| Asclepias pumila (A. Gray) Vail |
ASCLEPIADACEAE |
| Asclepias speciosa Torrey |
ASCLEPIADACEAE |
| Asclepias subverticillata (A. Gray) Vail |
ASCLEPIADACEAE |
| Astragalus ceramicus Sheldon |
FABACEAE |
| Astragalus ceramicus Sheldon var filifolius (A. Gray) F. J. Hermann |
FABACEAE |
| Astragalus gracilis Nuttall |
FABACEAE |
| Astragalus lotiflorus Hooker |
FABACEAE |
| Astragalus missouriensis Nuttall |
FABACEAE |
| Astragalus mollissimus Torrey var mollissimus |
FABACEAE |
| Astragalus pectinatus (Hooker) Douglas in Hooker |
FABACEAE |
| Bassia sieversiana (Pallas) W. A. Weber |
CHENOPODIACEAE |
| Bothriochloa ischaemum (L.) Keng var songarica (Ruprecht ex Fischer & Meyer) Celarier & Harlan |
POACEAE |
| Bothriochloa laguroides (De Candolle) Herter ssp torreyana (Steudel) Allred & Gould |
POACEAE |
| Bouteloua curtipendula (Michaux) Torrey |
POACEAE |
| Bouteloua curtipendula (Michaux) Torrey var curtipendula |
POACEAE |
| Brickellia eupatorioides (L.) Shinners |
ASTERACEAE |
| Bromopsis inermis (Leysser) Holub |
POACEAE |
| Bromus japonicus Thunberg |
POACEAE |
| Buchloë dactyloides (Nuttall) Engelmann |
POACEAE |
| Caesalpinia jamesii (Torrey & Gray) Fisher |
FABACEAE |
| Calamovilfa gigantea (Nuttall) Scribner & Merrill |
POACEAE |
| Calamovilfa longifolia (Hooker) Scribner in Hackel |
POACEAE |
| Callirhoë involucrata (Torrey & Gray) A. Gray |
MALVACEAE |
| Calylophus serrulatus (Nuttall) Raven |
ONAGRACEAE |
| Capsella bursa-pastoris (L.) Medicus |
BRASSICACEAE |
| Cardaria draba (L.) Desvaux |
BRASSICACEAE |
| Carex nebrascensis Dewey |
CYPERACEAE |
| Carex praegracilis F. Boott |
CYPERACEAE |
| Cenchrus longispinus (Hackel in Kneucker) Fernald |
POACEAE |
| Ceratocephala orthoceras De Candolle |
RANUNCULACEAE |
| Chaetopappa ericoides (A. Gray) Nesom |
ASTERACEAE |
| Chamaesyce geyeri (Engelmann) Small |
EUPHORBIACEAE |
| Chamaesyce glyptosperma (Engelmann) Small |
EUPHORBIACEAE |
| Chamaesyce missurica (Rafinesque) Shinners |
EUPHORBIACEAE |
| Chamaesyce stictospora (Engelmann) Small |
EUPHORBIACEAE |
| Chenopodium berlandieri Moquin |
CHENOPODIACEAE |
| Chenopodium cycloides A. Nelson |
CHENOPODIACEAE |
| Chenopodium desiccatum A. Nelson |
CHENOPODIACEAE |
| Chenopodium leptophyllum (Nuttall ex Moquin) S. Watson |
CHENOPODIACEAE |
| Chenopodium pratericola Rydberg |
CHENOPODIACEAE |
| Chenopodium subglabrum (S. Watson) A. Nelson |
CHENOPODIACEAE |
| Chloris verticillata Nuttall |
POACEAE |
| Chloris virgata Swartz |
POACEAE |
| Chondrosum gracile Humboldt, Bonpland, & Kunth |
POACEAE |
| Chondrosum hirsutum (Lagasca) Sweet |
POACEAE |
| Chondrosum prostratum (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 ochrocentrum A. Gray |
ASTERACEAE |
| Cirsium undulatum (Nuttall) Sprengel |
ASTERACEAE |
| Cleome serrulata Pursh |
CAPPARACEAE |
| Convolvulus arvensis L. |
CONVOLVULACEAE |
| Conyza canadensis (L.) Cronquist |
ASTERACEAE |
| 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 fendleri (A. Gray) Greene |
BORAGINACEAE |
| Cryptantha minima Rydberg |
BORAGINACEAE |
| 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 |
| Cynodon dactylon (L.) Persoon |
POACEAE |
| Dactylis glomerata L. |
POACEAE |
| Dalea candida Willdenow var oligophylla (Torrey) Shinners |
FABACEAE |
| Dalea cylindriceps Barneby |
FABACEAE |
| Dalea enneandra Nuttall |
FABACEAE |
| Dalea nana Torrey var nana |
FABACEAE |
| Dalea purpurea Ventenat |
FABACEAE |
| Dalea villosa Sprengel |
FABACEAE |
| Delphinium carolinianum Walter ssp virescens (Nuttall) R. Brooks |
HELLEBORACEAE |
| Desmanthus illinoensis (Michaux) MacMillan ex Robinson & Fernald |
FABACEAE |
| Dichanthelium oligosanthes (Schultes) Gould var scribnerianum (Nash) Gould |
POACEAE |
| Diplachne fascicularis (Lamarck) P. Beauvois |
POACEAE |
| Distichlis stricta (Torrey) Rydberg |
POACEAE |
| Dyssodia papposa (Ventenat) A. S. Hitchcock |
ASTERACEAE |
| Echinocereus viridiflorus Engelmann |
CACTACEAE |
| Echinochloa crus-galli (L.) P. Beauvois |
POACEAE |
| Eleocharis palustris (L.) Roemer & Schultes |
CYPERACEAE |
| Eleocharis xyridiformis Fernald & Brackett |
CYPERACEAE |
| Elymus longifolius (J. G. Smith) Gould |
POACEAE |
| Eragrostis barrelieri Daveau in Morot |
POACEAE |
| Eragrostis cilianensis (Allioni) F. T. Hubbard |
POACEAE |
| Eragrostis trichodes (Nuttall) Wood |
POACEAE |
| Erigeron bellidiastrum Nuttall |
ASTERACEAE |
| Erigeron pumilus Nuttall |
ASTERACEAE |
| Eriogonum annuum Nuttall |
POLYGONACEAE |
| Eriogonum effusum Nuttall |
POLYGONACEAE |
| Erodium cicutarium (L.) L'Heritier |
GENTIANACEAE |
| Erysimum asperum (Nuttall) De Candolle |
BRASSICACEAE |
| Euploca convolvulacea Nuttall |
BORAGINACEAE |
| Eustoma grandiflorum (Rafinesque) Shinners |
GENTIANACEAE |
| Evolvulus nuttallianus Schultes |
CONVOLVULACEAE |
| Festuca arundinacea Schreber |
POACEAE |
| Froelichia gracilis (Hooker) Moquin |
AMARANTHACEAE |
| Gaura coccinea Nuttall ex Pursh |
ONAGRACEAE |
| Gaura mollis James |
ONAGRACEAE |
| Glycyrrhiza lepidota Pursh |
FABACEAE |
| Grammica cuspidata (Engelmann) Hadaç & Chrtek |
CUSCUTACEAE |
| Grammica indecora (Choisy) W. A. Weber |
CUSCUTACEAE |
| Grammica indecora (Choisy) W. A. Weber var neuropetala (Engelmann) W. A. Weber |
CUSCUTACEAE |
| Grindelia squarrosa (Pursh) Dunal |
ASTERACEAE |
| Gutierrezia sarothrae (Pursh) Britton & Rusby |
ASTERACEAE |
| Halerpestes cymbalaria (Pursh) Greene ssp saximontana (Fernald) Moldenke |
RANUNCULACEAE |
| Helianthus annuus L. |
ASTERACEAE |
| Helianthus petiolaris Nuttall |
ASTERACEAE |
| Hesperostipa comata (Trinius & Ruprecht) Barkworth |
POACEAE |
| Heterotheca villosa (Pursh) Shinners |
ASTERACEAE |
| Hilaria jamesii (Torrey) Bentham |
POACEAE |
| Hymenopappus filifolius Hooker var cinereus (Rydberg) I. M. Johnston |
ASTERACEAE |
| Ipomoea leptophylla Torrey |
CONVOLVULACEAE |
| Ipomopsis longiflora (Torrey) V. Grant |
POLEMONIACEAE |
| Iva axillaris Pursh |
ASTERACEAE |
| Juncus arcticus Willdenow ssp ater (Rydberg) Hultén |
JUNCACEAE |
| Lactuca serriola L. |
ASTERACEAE |
| Lappula redowskii (Hornemann) Greene |
BORAGINACEAE |
| Leiostemon ambiguus (Torrey) Greene |
SCROPHULARIACEAE |
| Liatris punctata Hooker |
ASTERACEAE |
| Lithospermum incisum Lehmann |
BORAGINACEAE |
| Lupinus pusillus Pursh |
FABACEAE |
| Lupinus pusillus Pursh ssp pusillus |
FABACEAE |
| Lygodesmia juncea (Pursh) D. Don |
ASTERACEAE |
| Machaeranthera canescens (Pursh) A. Gray |
ASTERACEAE |
| Machaeranthera pinnatifida (Hooker) Shinners |
ASTERACEAE |
| Machaeranthera pinnatifida (Hooker) Shinners var. pinnatifida |
ASTERACEAE |
| Mariscus schweinitzii (Torrey) Koyama |
CYPERACEAE |
| Marsilea vestita Hooker & Greville |
MARSILEACEAE |
| Medicago lupulina L. |
FABACEAE |
| Medicago sativa L. |
FABACEAE |
| Melilotus albus Medicus |
FABACEAE |
| Melilotus officinale (L.) Pallas |
FABACEAE |
| Mesynium rigidum (Pursh) Löve & Löve |
LINACEAE |
| Monroa squarrosa (Nuttall) Torrey |
POACEAE |
| Morus alba L. |
MORACEAE |
| Muhlenbergia arenicola Buckley |
POACEAE |
| Muhlenbergia torreyi (Kunth) A. S. Hitchcock ex Bush |
POACEAE |
| Nuttallia nuda (Pursh) Greene |
LOASACEAE |
| Oenothera coronopifolia Torrey & Gray |
ONAGRACEAE |
| Oenothera latifolia (Rydberg) Munz |
ONAGRACEAE |
| Oenothera villosa Thunberg ssp strigosa (Rydberg) Dietrich & Raven |
ONAGRACEAE |
| Oligosporus caudatus (Michaux) Poljakov |
ASTERACEAE |
| Oligosporus dracunculus (L.) Poljakov |
ASTERACEAE |
| Oligosporus filifolius (Torrey) Poljakov |
ASTERACEAE |
| Opuntia macrorhiza Engelmann |
CACTACEAE |
| Opuntia polyacantha Haworth var. polyacantha |
CACTACEAE |
| Oreocarya suffruticosa (Torrey) Greene |
BORAGINACEAE |
| Orobanche multiflora Nuttall |
OROBANCHACEAE |
| Oxybaphus decumbens (Nuttall) Sweet |
NYCTAGINACEAE |
| Oxybaphus glaber S. Watson |
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 tridenticulata (Rydberg) Weber & Löve |
ASTERACEAE |
| Palafoxia sphacelata (Nuttall ex Torrey) Cory |
ASTERACEAE |
| Panicum capillare L. |
POACEAE |
| Panicum hallii Vasey |
POACEAE |
| Panicum miliaceum L. |
POACEAE |
| Panicum virgatum L. |
POACEAE |
| Pascopyrum smithii (Rydberg) Löve |
POACEAE |
| Paspalum setaceum Michaux var stramineum (Nash) D. Banks |
POACEAE |
| Pediomelum hypogaeum (Nuttall ex Torrey & Gray) Rydberg |
FABACEAE |
| Penstemon albidus Nuttall |
SCROPHULARIACEAE |
| Penstemon buckleyi Pennell |
SCROPHULARIACEAE |
| Persicaria bicornis (Rafinesque) Nieuwland |
POLYGONACEAE |
| Persicaria lapathifolia (L.) S. Gray |
POLYGONACEAE |
| Persicaria pensylvanica (L.) Gomez |
POLYGONACEAE |
| Phyla cuneifolia (Torrey) Greene |
VERBENACEAE |
| Physalis hederifolia A. Gray var. comata (Rydberg) Waterfall |
SOLANACEAE |
| Physalis pumila Nuttall ssp hispida (Waterfall) Hinton |
SOLANACEAE |
| Physalis virginiana P. Miller |
SOLANACEAE |
| Picradeniopsis oppositifolia (Nuttall) Rydberg |
ASTERACEAE |
| Poa annua L. |
POACEAE |
| Poa pratensis L. |
POACEAE |
| Pocilla polita (E. Fries) Fourreau |
SCROPHULARIACEAE |
| Podospermum laciniatum (L.) De Candolle |
ASTERACEAE |
| Poinsettia dentata (Michaux) Klotsch & Garcke |
EUPHORBIACEAE |
| Polanisia dodecandra (L.) De Candolle |
CAPPARACEAE |
| Polanisia jamesii (Torrey & Gray) Iltis |
CAPPARACEAE |
| Polygonum arenastrum Boreau |
POLYGONACEAE |
| Polygonum ramosissimum Michaux |
POLYGONACEAE |
| Polypogon monspeliensis (L.) Desfontaines |
POACEAE |
| Populus alba L. |
SALICACEAE |
| Populus deltoides H. Marshall ssp monilifera (Aiton) Eckenwalder |
SALICACEAE |
| Proboscidea louisianica (P. Miller) Thellung |
MARTYNIACEAE |
| Psathyrostachys juncea (Fischer) Nevski |
POACEAE |
| Psoralidium digitatum (Nuttall) Rydberg |
FABACEAE |
| Psoralidium lanceolatum (Pursh) Rydberg |
FABACEAE |
| Psoralidium tenuiflorum (Pursh) Rydberg |
FABACEAE |
| Quincula lobata (Torrey) Rafinesque |
SOLANACEAE |
| Ratibida columnifera (Nuttall) Wooton & Standley |
ASTERACEAE |
| Ratibida tagetes (James) Barnhart |
ASTERACEAE |
| Rorippa sinuata (Nuttall in Torrey & Gray) A. S. Hitchcock |
BRASSICACEAE |
| Rumex crispus L. |
POLYGONACEAE |
| Salix amygdaloides Andersson |
SALICACEAE |
| Salix exigua Nuttall |
SALICACEAE |
| Salsola collina Pallas |
CHENOPODIACEAE |
| Salvia reflexa Hornemann |
LAMIACEAE |
| Sanguisorba minor Scopoli |
ROSACEAE |
| Schedonnardus paniculatus (Nuttall) Trelease |
POACEAE |
| Schizachyrium scoparium (Michaux) Nash |
POACEAE |
| Schoenoplectus lacustris (L.) Palla ssp acutus (Mühlenberg ex Bigelow) Löve & Löve |
CYPERACEAE |
| Schoenoplectus lacustris (L.) Palla ssp creber (Fernald) Löve & Löve |
CYPERACEAE |
| Schoenoplectus pungens (M. Vahl) Palla |
CYPERACEAE |
| Senecio riddellii Torrey & Gray |
ASTERACEAE |
| Setaria glauca (L.) P. Beauvois |
POACEAE |
| Setaria viridis (L.) P. Beauvois |
POACEAE |
| Shinnersoseris rostrata (A. Gray) Tomb |
ASTERACEAE |
| Solanum rostratum Dunal |
SOLANACEAE |
| Solidago gigantea Aiton |
ASTERACEAE |
| Solidago mollis Bartling |
ASTERACEAE |
| Sorghastrum avenaceum (Michaux) Nash |
POACEAE |
| Sphaeralcea coccinea (Pursh) Rydberg |
MALVACEAE |
| Sphaeralcea coccinea (Pursh) Rydberg ssp coccinea |
MALVACEAE |
| Sphenopholis obtusata (Michaux) Scribner |
POACEAE |
| Sporobolus airoides (Torrey) Torrey |
POACEAE |
| Sporobolus asper (Michaux) Kunth |
POACEAE |
| Sporobolus cryptandrus (Torrey) A. Gray |
POACEAE |
| Strophostyles leiosperma (Torrey & Gray) Piper |
FABACEAE |
| Suckleya suckleyana (Torrey) Rydberg |
CHENOPODIACEAE |
| Tamarix ramosissima Ledebour |
TAMARICACEAE |
| Thelesperma megapotamicum (Sprengel) Kuntze |
ASTERACEAE |
| Thinopyrum ponticum (Podpera) Barkworth & Dewey |
POACEAE |
| Thymophylla aurea (A. Gray) Greene |
ASTERACEAE |
| Tradescantia occidentalis (Britton) Smyth var scopulorum (Rose) Anderson & Woodson |
COMMELINACEAE |
| Tragopogon dubius Scopoli |
ASTERACEAE |
| Tribulus terrestris L. |
ZYGOPHYLLACEAE |
| Triodanis perfoliata (L.) Nieuwland |
CAMPANULACEAE |
| Triplasis purpurea (Walter) Chapman |
POACEAE |
| Tripterocalyx micranthus (Torrey) Hooker |
NYCTAGINACEAE |
| Typha angustifolia L. |
TYPHACEAE |
| Ulmus pumila L. |
ULMACEAE |
| Verbena bracteata Lagasca & Rodriguez |
VERBENACEAE |
| Verbena stricta Ventenat |
VERBENACEAE |
| Vernonia marginata (Torrey) Rafinesque |
ASTERACEAE |
| Vexibia nuttalliana (B. Turner) W. A. Weber |
FABACEAE |
| Virgulus ericoides (L.) Reveal & Keener |
ASTERACEAE |
| Virgulus falcatus (Lindley) Reveal & Keener |
ASTERACEAE |
| Xanthium strumarium L. |
ASTERACEAE |
| Ximenesia encelioides Cavanilles |
ASTERACEAE |
| Yucca glauca Nuttall in Fraser |
AGAVACEAE |
| Zinnia grandiflora Nuttall |
ASTERACEAE |
