225 Records
| Citation | Family Name |
| Abronia fragrans Nuttall ex Hooker |
NYCTAGINACEAE |
| Achnatherum hymenoides (Roemer & Schultes) Barkworth |
POACEAE |
| Agaloma marginata (Pursh) Löve & Löve |
EUPHORBIACEAE |
| Allium textile Nelson & Macbride |
ALLIACEAE |
| Amaranthus arenicola I. M. Johnston |
AMARANTHACEAE |
| Amaranthus blitoides S. Watson |
AMARANTHACEAE |
| Amaranthus retroflexus L. |
AMARANTHACEAE |
| Ambrosia artemisiifolia L. var elatior (L.) Descourtils |
ASTERACEAE |
| Ambrosia psilostachya De Candolle var coronopifolia (Torrey & Gray) Farwell |
ASTERACEAE |
| Ambrosia trifida L. |
ASTERACEAE |
| Amorpha canescens Pursh |
FABACEAE |
| Amorpha fruticosa L. |
FABACEAE |
| Andropogon hallii Hackel |
POACEAE |
| Anisantha tectorum (L.) Nevski |
POACEAE |
| Aphyllon fasciculatum (Nuttall) Torrey & Gray |
OROBANCHACEAE |
| Apocynum cannabinum L. |
APOCYNACEAE |
| Argemone polyanthemos (Fedde) G. Ownbey |
PAPAVERACEAE |
| Aristida purpurea Nuttall |
POACEAE |
| Artemisia frigida Willdenow |
ASTERACEAE |
| Artemisia ludoviciana Nuttall ssp ludoviciana |
ASTERACEAE |
| Asclepias arenaria Torrey |
ASCLEPIADACEAE |
| Asclepias engelmanniana Woodson |
ASCLEPIADACEAE |
| Asclepias incarnata L. |
ASCLEPIADACEAE |
| Asclepias pumila (A. Gray) Vail |
ASCLEPIADACEAE |
| Asclepias speciosa Torrey |
ASCLEPIADACEAE |
| Asclepias viridiflora Rafinesque |
ASCLEPIADACEAE |
| Asparagus officinalis L. |
ASPARAGACEAE |
| Astragalus adsurgens Pallas var robustior Hooker |
FABACEAE |
| Astragalus missouriensis Nuttall |
FABACEAE |
| Astragalus mollissimus Torrey |
FABACEAE |
| Azolla mexicana K. Presl |
SALVINIACEAE |
| Bassia sieversiana (Pallas) W. A. Weber |
CHENOPODIACEAE |
| Bidens comosa (A. Gray) Wiegand |
ASTERACEAE |
| Bidens frondosa L. |
ASTERACEAE |
| Bouteloua curtipendula (Michaux) Torrey |
POACEAE |
| Brickellia eupatorioides (L.) Shinners |
ASTERACEAE |
| Bromus japonicus Thunberg |
POACEAE |
| Buchloë dactyloides (Nuttall) Engelmann |
POACEAE |
| Calamovilfa longifolia (Hooker) Scribner in Hackel |
POACEAE |
| Calylophus lavandulifolius (Torrey & Gray) Raven |
ONAGRACEAE |
| Calylophus serrulatus (Nuttall) Raven |
ONAGRACEAE |
| Carex filifolia Nuttall |
CYPERACEAE |
| Carex pensylvanica Lamarck ssp heliophila (Mackenzie) W. A. Weber |
CYPERACEAE |
| Carex praegracilis F. Boott |
CYPERACEAE |
| Castilleja sessiliflora Pursh |
SCROPHULARIACEAE |
| Cenchrus longispinus (Hackel in Kneucker) Fernald |
POACEAE |
| Cerasus pumila (L.) Michaux ssp besseyi (L. H. Bailey) W. A. Weber |
ROSACEAE |
| Chamaesyce glyptosperma (Engelmann) Small |
EUPHORBIACEAE |
| Chamaesyce missurica (Rafinesque) Shinners |
EUPHORBIACEAE |
| Chenopodium berlandieri Moquin |
CHENOPODIACEAE |
| Chenopodium incanum (S. Watson) Heller |
CHENOPODIACEAE |
| Chenopodium pratericola Rydberg |
CHENOPODIACEAE |
| Chondrosum gracile Humboldt, Bonpland, & Kunth |
POACEAE |
| Chondrosum hirsutum (Lagasca) Sweet |
POACEAE |
| Chorispora tenella (Pallas) De Candolle |
BRASSICACEAE |
| Cirsium canescens Nuttall |
ASTERACEAE |
| Cirsium undulatum (Nuttall) Sprengel |
ASTERACEAE |
| Cleome serrulata Pursh |
CAPPARACEAE |
| Cleomella angustifolia Torrey |
CAPPARACEAE |
| 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 minima Rydberg |
BORAGINACEAE |
| Cucurbita foetidissima Humboldt, Bonpland, & Kunth |
CUCURBITACEAE |
| Cyclachaena xanthifolia (Nuttall) Fresenius |
ASTERACEAE |
| Cycloloma atriplicifolium (Sprengel) Coulter |
CHENOPODIACEAE |
| Cymopterus acaulis (Pursh) Rafinesque |
APIACEAE |
| Cyperus odoratus L. |
CYPERACEAE |
| Dalea aurea Nuttall ex Pursh |
FABACEAE |
| Dalea candida Willdenow var oligophylla (Torrey) Shinners |
FABACEAE |
| Dalea cylindriceps Barneby |
FABACEAE |
| Dalea purpurea Ventenat |
FABACEAE |
| Dalea villosa Sprengel |
FABACEAE |
| Delphinium carolinianum Walter ssp virescens (Nuttall) R. Brooks |
HELLEBORACEAE |
| Descurainia sophia (L.) Webb ex Prantl |
BRASSICACEAE |
| 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 |
| Ellisia nyctelea (L.) L. |
HYDROPHYLLACEAE |
| Elymus canadensis L. |
POACEAE |
| Elymus longifolius (J. G. Smith) Gould |
POACEAE |
| Elytrigia repens (L.) Nevski |
POACEAE |
| Eragrostis cilianensis (Allioni) F. T. Hubbard |
POACEAE |
| Erigeron bellidiastrum Nuttall |
ASTERACEAE |
| Erigeron canus A. Gray |
ASTERACEAE |
| Eriogonum annuum Nuttall |
POLYGONACEAE |
| Erysimum asperum (Nuttall) De Candolle |
BRASSICACEAE |
| Eustoma grandiflorum (Rafinesque) Shinners |
GENTIANACEAE |
| Euthamia gymnospermoides Greene |
ASTERACEAE |
| Euthamia occidentalis Nuttall |
ASTERACEAE |
| Evolvulus nuttallianus Schultes |
CONVOLVULACEAE |
| Froelichia floridana (Nuttall) Moquin var campestris (Small) Fernald |
AMARANTHACEAE |
| Gaura coccinea Nuttall ex Pursh |
ONAGRACEAE |
| Gaura mollis James |
ONAGRACEAE |
| Grammica indecora (Choisy) W. A. Weber var neuropetala (Engelmann) W. A. Weber |
CUSCUTACEAE |
| Grindelia squarrosa (Pursh) Dunal var serrulata (Rydberg) Steyermark |
ASTERACEAE |
| Gutierrezia sarothrae (Pursh) Britton & Rusby |
ASTERACEAE |
| Halerpestes cymbalaria (Pursh) Greene ssp saximontana (Fernald) Moldenke |
RANUNCULACEAE |
| Helianthus annuus L. |
ASTERACEAE |
| Helianthus maximilianii Schrader |
ASTERACEAE |
| Heliotropium curassavicum L. ssp oculatum (Heller) Thorne |
BORAGINACEAE |
| Hesperostipa comata (Trinius & Ruprecht) Barkworth |
POACEAE |
| Heterotheca canescens (De Candolle) Shinners |
ASTERACEAE |
| Heterotheca villosa (Pursh) Shinners |
ASTERACEAE |
| Hymenopappus filifolius Hooker var cinereus (Rydberg) I. M. Johnston |
ASTERACEAE |
| Hymenopappus tenuifolius Pursh |
ASTERACEAE |
| Ipomoea leptophylla Torrey |
CONVOLVULACEAE |
| Juncus torreyi Coville |
JUNCACEAE |
| Koeleria macrantha (Ledebour) Schultes |
POACEAE |
| Lappula marginata (Bieberstein) Guerke |
BORAGINACEAE |
| Lathyrus polymorphus Nuttall ssp incanus (Small & Rydberg) C. L. Hitchcock |
FABACEAE |
| Lemna turionifera Landolt |
LEMNACEAE |
| Lepidium densiflorum Schrader |
BRASSICACEAE |
| Lesquerella ludoviciana (Nuttall) S. Watson |
BRASSICACEAE |
| Leucocrinum montanum Nuttall ex A. Gray |
LILIACEAE |
| Liatris punctata Hooker |
ASTERACEAE |
| Lithospermum incisum Lehmann |
BORAGINACEAE |
| Lycopus americanus Mühlenberg ex W. Barton |
LAMIACEAE |
| Lygodesmia juncea (Pursh) D. Don |
ASTERACEAE |
| Machaeranthera pinnatifida (Hooker) Shinners |
ASTERACEAE |
| Maianthemum stellatum (L.) Link |
CONVALLARIACEAE |
| Mariscus schweinitzii (Torrey) Koyama |
CYPERACEAE |
| Melilotus officinale (L.) Pallas |
FABACEAE |
| Mesynium rigidum (Pursh) Löve & Löve |
LINACEAE |
| Monroa squarrosa (Nuttall) Torrey |
POACEAE |
| Muhlenbergia asperifolia (Nees & Meyen ex Trinius) Parodi |
POACEAE |
| Muhlenbergia pungens Thurber ex A. Gray |
POACEAE |
| Nassella viridula (Trinius) Barkworth |
POACEAE |
| Nasturtium officinale R. Brown |
BRASSICACEAE |
| Nothocalais cuspidata (Pursh) Greene |
ASTERACEAE |
| Nuttallia nuda (Pursh) Greene |
LOASACEAE |
| Oenothera albicaulis Pursh |
ONAGRACEAE |
| Oenothera coronopifolia Torrey & Gray |
ONAGRACEAE |
| Oenothera latifolia (Rydberg) Munz |
ONAGRACEAE |
| Oenothera villosa Thunberg ssp strigosa (Rydberg) Dietrich & Raven |
ONAGRACEAE |
| Oligosporus filifolius (Torrey) Poljakov |
ASTERACEAE |
| Opuntia macrorhiza Engelmann |
CACTACEAE |
| Oreocarya suffruticosa (Torrey) Greene |
BORAGINACEAE |
| Orophaca sericea (Nuttall) Britton |
FABACEAE |
| Oxybaphus linearis (Pursh) B. L. Robinson |
NYCTAGINACEAE |
| Oxybaphus nyctagineus (Michaux) T. C. Porter in Porter & Coulter |
NYCTAGINACEAE |
| Oxytropis lambertii Pursh |
FABACEAE |
| Oxytropis sericea Nuttall |
FABACEAE |
| Palafoxia sphacelata (Nuttall ex Torrey) Cory |
ASTERACEAE |
| Panicum capillare L. |
POACEAE |
| Panicum virgatum L. |
POACEAE |
| Paronychia jamesii Torrey & Gray |
ALSINACEAE |
| Pascopyrum smithii (Rydberg) Löve |
POACEAE |
| Paspalum setaceum Michaux var stramineum (Nash) D. Banks |
POACEAE |
| Penstemon albidus Nuttall |
SCROPHULARIACEAE |
| Penstemon angustifolius Nuttall ex Pursh ssp caudatus (Heller) Keck |
SCROPHULARIACEAE |
| Persicaria bicornis (Rafinesque) Nieuwland |
POLYGONACEAE |
| Persicaria lapathifolia (L.) S. Gray |
POLYGONACEAE |
| Phragmites australis (Cavanilles) Trinius ex Steudel |
POACEAE |
| Physalis pumila Nuttall ssp hispida (Waterfall) Hinton |
SOLANACEAE |
| Physalis virginiana P. Miller |
SOLANACEAE |
| Plantago eriopoda Torrey |
PLANTAGINACEAE |
| Plantago patagonica Jacquin |
PLANTAGINACEAE |
| Polanisia jamesii (Torrey & Gray) Iltis |
CAPPARACEAE |
| Polygala alba Nuttall |
POLYGALACEAE |
| Populus deltoides H. Marshall ssp monilifera (Aiton) Eckenwalder |
SALICACEAE |
| Psilochenia runcinata (James ex Torrey) Löve & Löve |
ASTERACEAE |
| Psoralidium argophyllum (Pursh) Rydberg |
FABACEAE |
| Psoralidium tenuiflorum (Pursh) Rydberg |
FABACEAE |
| Ratibida columnifera (Nuttall) Wooton & Standley |
ASTERACEAE |
| Rayjacksonia annua (Rydberg) R. L. Hartman & M. A. Lane |
ASTERACEAE |
| Redfieldia flexuosa (Thurber ex A. Gray) Vasey |
POACEAE |
| Rhus aromatica Aiton ssp trilobata (Nuttall ex Torrey & Gray) W. A. Weber |
ANACARDIACEAE |
| Ribes aureum Pursh |
GROSSULARIACEAE |
| Rorippa sinuata (Nuttall in Torrey & Gray) A. S. Hitchcock |
BRASSICACEAE |
| Rosa woodsii Lindley |
ROSACEAE |
| Rumex altissimus Wood |
POLYGONACEAE |
| Rumex crispus L. |
POLYGONACEAE |
| Rumex stenophyllus Ledebour |
POLYGONACEAE |
| Rumex venosus Pursh |
POLYGONACEAE |
| Salix amygdaloides Andersson |
SALICACEAE |
| Salix exigua Nuttall var pedicellata (Andersson) Cronquist |
SALICACEAE |
| Salsola australis R. Brown |
CHENOPODIACEAE |
| Salvia reflexa Hornemann |
LAMIACEAE |
| Schedonnardus paniculatus (Nuttall) Trelease |
POACEAE |
| Schizachyrium scoparium (Michaux) Nash |
POACEAE |
| Schoenoplectus acutus (Mühlenberg) Löve & Löve |
CYPERACEAE |
| Schoenoplectus pungens (M. Vahl) Palla |
CYPERACEAE |
| Setaria glauca (L.) P. Beauvois |
POACEAE |
| Shinnersoseris rostrata (A. Gray) Tomb |
ASTERACEAE |
| Sisymbrium altissimum L. |
BRASSICACEAE |
| Solanum americanum P. Miller |
SOLANACEAE |
| Solanum rostratum Dunal |
SOLANACEAE |
| Solanum triflorum Nuttall |
SOLANACEAE |
| Solidago canadensis L. |
ASTERACEAE |
| Solidago gigantea Aiton |
ASTERACEAE |
| Solidago missouriensis Nuttall |
ASTERACEAE |
| Solidago mollis Bartling |
ASTERACEAE |
| Sorghastrum avenaceum (Michaux) Nash |
POACEAE |
| Spartina pectinata Link |
POACEAE |
| Sphaeralcea coccinea (Pursh) Rydberg |
MALVACEAE |
| Sporobolus airoides (Torrey) Torrey |
POACEAE |
| Sporobolus cryptandrus (Torrey) A. Gray |
POACEAE |
| Suaeda nigra (Rafinesque) Macbride |
CHENOPODIACEAE |
| Symphoricarpos occidentalis Hooker |
CAPRIFOLIACEAE |
| Tetraneuris acaulis (Pursh) Greene |
ASTERACEAE |
| Thelesperma filifolium (Hooker) A. Gray var intermedium (Rydberg) Shinners |
ASTERACEAE |
| Thelesperma megapotamicum (Sprengel) Kuntze |
ASTERACEAE |
| Townsendia exscapa (Richardson) T. C. Porter |
ASTERACEAE |
| Toxicodendron rydbergii (Small ex Rydberg) Greene |
ANACARDIACEAE |
| Tradescantia occidentalis (Britton) Smyth var scopulorum (Rose) Anderson & Woodson |
COMMELINACEAE |
| Tribulus terrestris L. |
ZYGOPHYLLACEAE |
| Triplasis purpurea (Walter) Chapman |
POACEAE |
| Typha angustifolia L. |
TYPHACEAE |
| Typha latifolia L. |
TYPHACEAE |
| Verbena bracteata Lagasca & Rodriguez |
VERBENACEAE |
| Verbena stricta Ventenat |
VERBENACEAE |
| Vernonia fasciculata Michaux ssp corymbosa (Schweinitz) Löve & Löve |
ASTERACEAE |
| Veronica anagallis-aquatica L. |
SCROPHULARIACEAE |
| Vexibia nuttalliana (B. Turner) W. A. Weber |
FABACEAE |
| Vicia americana Mühlenberg |
FABACEAE |
| Viola nuttallii Pursh |
VIOLACEAE |
| Vulpia octoflora (Walter) Rydberg |
POACEAE |
| Xanthium strumarium L. |
ASTERACEAE |
| Yucca glauca Nuttall in Fraser |
AGAVACEAE |
| Zygophyllidium hexagonum (Nuttall) Small |
EUPHORBIACEAE |
