405 Records
| Citation | Family Name |
| Abronia fragrans Nuttall ex Hooker |
NYCTAGINACEAE |
| Achnatherum hymenoides (Roemer & Schultes) Barkworth |
POACEAE |
| Acosta diffusa (Lamarck) Sojak |
ASTERACEAE |
| Adenolinum lewisii (Pursh) Löve & Löve |
LINACEAE |
| Agaloma marginata (Pursh) Löve & Löve |
EUPHORBIACEAE |
| Agropyron desertorum Fischer ex Link |
POACEAE |
| Agrostis gigantea Roth |
POACEAE |
| Alcea rosea L. |
MALVACEAE |
| Aliciella pinnatifida (Nuttall ex A. Gray) J.M. Porter |
POLEMONIACEAE |
| Allium textile Nelson & Macbride |
ALLIACEAE |
| Alopecurus arundinaceus Poir. |
POACEAE |
| Alyssum parviflorum M. Bieberstein var. micranthum (C. A. Meyer in Fisher & Meyer) Dorn |
BRASSICACEAE |
| Amaranthus arenicola I. M. Johnston |
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 |
| Andropogon gerardii Vitman |
POACEAE |
| Andropogon hallii Hackel |
POACEAE |
| Anisantha tectorum (L.) Nevski |
POACEAE |
| Antennaria parvifolia Nuttall |
ASTERACEAE |
| Apocynum cannabinum L. |
APOCYNACEAE |
| 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 carruthii Wood {ex} Carruth |
ASTERACEAE |
| Artemisia ludoviciana Nuttall |
ASTERACEAE |
| Artemisia ludoviciana Nuttall ssp ludoviciana |
ASTERACEAE |
| Asclepias arenaria Torrey |
ASCLEPIADACEAE |
| Asclepias engelmanniana Woodson |
ASCLEPIADACEAE |
| Asclepias incarnata L. |
ASCLEPIADACEAE |
| Asclepias latifolia (Torrey) Rafinesque |
ASCLEPIADACEAE |
| Asclepias pumila (A. Gray) Vail |
ASCLEPIADACEAE |
| Asclepias speciosa Torrey |
ASCLEPIADACEAE |
| Asclepias subverticillata (A. Gray) Vail |
ASCLEPIADACEAE |
| Asclepias viridiflora Rafinesque |
ASCLEPIADACEAE |
| Astragalus bisulcatus (Hooker) A. Gray |
FABACEAE |
| Astragalus ceramicus Sheldon |
FABACEAE |
| Astragalus ceramicus Sheldon var filifolius (A. Gray) F. J. Hermann |
FABACEAE |
| Astragalus crassicarpus Nuttall |
FABACEAE |
| Astragalus crassicarpus Nuttall var crassicarpus |
FABACEAE |
| Astragalus drummondii Douglas ex Hooker |
FABACEAE |
| Astragalus gracilis Nuttall |
FABACEAE |
| Astragalus missouriensis Nuttall |
FABACEAE |
| Astragalus missouriensis Nuttall var missouriensis |
FABACEAE |
| Astragalus mollissimus Torrey var mollissimus |
FABACEAE |
| Astragalus pectinatus (Hooker) Douglas in Hooker |
FABACEAE |
| Astragalus racemosus Pursh |
FABACEAE |
| Astragalus racemosus Pursh var. racemosus |
FABACEAE |
| Atriplex argentea Nuttall |
CHENOPODIACEAE |
| Atriplex canescens (Pursh) Nuttall |
CHENOPODIACEAE |
| Atriplex heterosperma Bunge |
CHENOPODIACEAE |
| Atriplex patula L. |
CHENOPODIACEAE |
| Bassia sieversiana (Pallas) W. A. Weber |
CHENOPODIACEAE |
| Batrachium longirostre (Godron) F. Schultz |
RANUNCULACEAE |
| Batrachium sp. |
RANUNCULACEAE |
| Berula erecta (Hudson) Coville |
APIACEAE |
| Bidens cernua L. |
ASTERACEAE |
| Bidens comosa (A. Gray) Wiegand |
ASTERACEAE |
| Bidens frondosa L. |
ASTERACEAE |
| Bolboschoenus maritimus (L.) Palla |
CYPERACEAE |
| Bolboschoenus maritimus (L.) Palla ssp paludosus (A. Nelson) Löve & Löve |
CYPERACEAE |
| Bouteloua curtipendula (Michaux) Torrey |
POACEAE |
| Bouteloua curtipendula (Michaux) Torrey var curtipendula |
POACEAE |
| Breea arvensis (L.) Lessing |
ASTERACEAE |
| Brickellia eupatorioides (L.) Shinners |
ASTERACEAE |
| Bromopsis inermis (Leysser) Holub |
POACEAE |
| Bromus japonicus Thunberg |
POACEAE |
| Buchloë dactyloides (Nuttall) Engelmann |
POACEAE |
| Calamovilfa longifolia (Hooker) Scribner in Hackel |
POACEAE |
| Calylophus serrulatus (Nuttall) Raven |
ONAGRACEAE |
| Camelina microcarpa Andrzejowski ex De Candolle |
BRASSICACEAE |
| Caragana arborescens Lamarck |
FABACEAE |
| Cardaria draba (L.) Desvaux |
BRASSICACEAE |
| Carex brevior (Dewey) Mackenzie |
CYPERACEAE |
| Carex filifolia Nuttall |
CYPERACEAE |
| Carex lanuginosa Michaux |
CYPERACEAE |
| Carex nebrascensis Dewey |
CYPERACEAE |
| Carex pensylvanica Lamarck ssp heliophila (Mackenzie) W. A. Weber |
CYPERACEAE |
| Carex praegracilis F. Boott |
CYPERACEAE |
| Carex stenophylla Wahlenberg ssp eleocharis (L. H. Bailey) Hultén |
CYPERACEAE |
| Castilleja sessiliflora Pursh |
SCROPHULARIACEAE |
| Cenchrus longispinus (Hackel in Kneucker) Fernald |
POACEAE |
| Cerastium nutans Rafinesque var brachypodum Engelmann ex A. Gray |
ALSINACEAE |
| Chamaesaracha coronopus (Dunal) A. Gray |
SOLANACEAE |
| Chamaesyce fendleri (Torrey & Gray) Small |
EUPHORBIACEAE |
| Chamaesyce geyeri (Engelmann) Small |
EUPHORBIACEAE |
| Chamaesyce missurica (Rafinesque) Shinners |
EUPHORBIACEAE |
| Chamaesyce serpens (Humboldt, Bonpland, & Kunth) Small |
EUPHORBIACEAE |
| Chenopodium berlandieri Moquin |
CHENOPODIACEAE |
| Chenopodium cycloides A. Nelson |
CHENOPODIACEAE |
| Chenopodium fremontii S. Watson |
CHENOPODIACEAE |
| Chenopodium glaucum L. |
CHENOPODIACEAE |
| Chenopodium incanum (S. Watson) Heller |
CHENOPODIACEAE |
| Chenopodium leptophyllum (Nuttall ex Moquin) S. Watson |
CHENOPODIACEAE |
| Chenopodium pratericola Rydberg |
CHENOPODIACEAE |
| Chenopodium subglabrum (S. Watson) A. Nelson |
CHENOPODIACEAE |
| 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 canescens Nuttall |
ASTERACEAE |
| Cirsium ochrocentrum A. Gray |
ASTERACEAE |
| Cirsium undulatum (Nuttall) Sprengel |
ASTERACEAE |
| Cirsium vulgare (Savi) Tenore |
ASTERACEAE |
| Cleome serrulata Pursh |
CAPPARACEAE |
| Comandra umbellata (L.) Nuttall ssp pallida (A. De Candolle) Piehl |
SANTALACEAE |
| Conium maculatum L. |
APIACEAE |
| Convolvulus arvensis L. |
CONVOLVULACEAE |
| Conyza canadensis (L.) Cronquist |
ASTERACEAE |
| 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 |
| 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 |
| Cylindropuntia imbricata (Haworth) Knuth |
CACTACEAE |
| Cymopterus montanus Torrey & Gray |
APIACEAE |
| Cyperus aristatus Rottboel |
CYPERACEAE |
| Dalea candida Willdenow var oligophylla (Torrey) Shinners |
FABACEAE |
| Dalea cylindriceps Barneby |
FABACEAE |
| Dalea purpurea Ventenat |
FABACEAE |
| Delphinium carolinianum Walter ssp virescens (Nuttall) R. Brooks |
HELLEBORACEAE |
| 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 |
| Elaeagnus angustifolia L. |
ELAEAGNACEAE |
| Eleocharis acicularis (L.) Roemer & Schultes |
CYPERACEAE |
| Eleocharis palustris (L.) Roemer & Schultes |
CYPERACEAE |
| Ellisia nyctelea (L.) L. |
HYDROPHYLLACEAE |
| Elymus canadensis L. |
POACEAE |
| Elymus elymoides (Rafinesque) Swezey |
POACEAE |
| Elymus trachycaulus (Link) Gould |
POACEAE |
| Elymus trachycaulus (Link) Gould ex Shinners ssp trachycaulus |
POACEAE |
| Epilobium ciliatum Rafinesque |
ONAGRACEAE |
| Epilobium ciliatum Rafinesque ssp glandulosum (Lehmann) Hoch & Raven |
ONAGRACEAE |
| Eragrostis cilianensis (Allioni) F. T. Hubbard |
POACEAE |
| Eragrostis minor Host |
POACEAE |
| Eragrostis pectinacea (Michaux) Nees |
POACEAE |
| Eragrostis trichodes (Nuttall) Wood |
POACEAE |
| Erigeron divergens Torrey & Gray |
ASTERACEAE |
| Erigeron flagellaris A. Gray |
ASTERACEAE |
| Erigeron pumilus Nuttall |
ASTERACEAE |
| Eriogonum acaule Nuttall |
POLYGONACEAE |
| Eriogonum annuum Nuttall |
POLYGONACEAE |
| Eriogonum effusum Nuttall |
POLYGONACEAE |
| Erodium cicutarium (L.) L'Heritier |
GENTIANACEAE |
| Erysimum asperum (Nuttall) De Candolle |
BRASSICACEAE |
| Erysimum repandum L. |
BRASSICACEAE |
| Euploca convolvulacea Nuttall |
BORAGINACEAE |
| Euploca convolvulacea Nuttall ssp convolvulacea |
BORAGINACEAE |
| Evolvulus nuttallianus Schultes |
CONVOLVULACEAE |
| Fraxinus pennsylvanica H. Marshall var lanceolata (Borkhausen) Sargent |
OLEACEAE |
| Froelichia gracilis (Hooker) Moquin |
AMARANTHACEAE |
| Gaillardia pinnatifida Torrey |
ASTERACEAE |
| 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 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 |
| Hecatonia scelerata (L.) Fourreau |
RANUNCULACEAE |
| Helianthus annuus L. |
ASTERACEAE |
| Helianthus nuttallii Torrey & Gray |
ASTERACEAE |
| Helianthus petiolaris Nuttall |
ASTERACEAE |
| Hesperostipa comata (Trinius & Ruprecht) Barkworth |
POACEAE |
| Heterotheca canescens (De Candolle) Shinners |
ASTERACEAE |
| Heterotheca villosa (Pursh) Shinners |
ASTERACEAE |
| Hilaria jamesii (Torrey) Bentham |
POACEAE |
| Hippochaete laevigata (A. Braun) Farwell |
EQUISETACEAE |
| Hymenopappus flavescens A. Gray |
ASTERACEAE |
| Hymenopappus tenuifolius Pursh |
ASTERACEAE |
| Ipomoea leptophylla Torrey |
CONVOLVULACEAE |
| Ipomopsis laxiflora (Coulter) V. Grant |
POLEMONIACEAE |
| Ipomopsis longiflora (Torrey) V. Grant |
POLEMONIACEAE |
| Ipomopsis spicata (Nuttall) V. Grant |
POLEMONIACEAE |
| Iva axillaris Pursh |
ASTERACEAE |
| Juncus arcticus Willdenow ssp ater (Rydberg) Hultén |
JUNCACEAE |
| Juncus bufonius L. |
JUNCACEAE |
| Juncus compressus Jacquin |
JUNCACEAE |
| Juncus interior Wiegand |
JUNCACEAE |
| Juncus torreyi Coville |
JUNCACEAE |
| Koeleria macrantha (Ledebour) Schultes |
POACEAE |
| Krascheninnikovia lanata (Pursh) Meeuse & Smit |
CHENOPODIACEAE |
| Lactuca serriola L. |
ASTERACEAE |
| Lactuca tatarica (L.) C. A. Meyer ssp pulchella (Pursh) Stebbins |
ASTERACEAE |
| Lappula marginata (Bieberstein) Guerke |
BORAGINACEAE |
| Lappula redowskii (Hornemann) Greene |
BORAGINACEAE |
| Lathyrus eucosmus Butters & St. John |
FABACEAE |
| Lathyrus polymorphus Nuttall ssp incanus (Small & Rydberg) C. L. Hitchcock |
FABACEAE |
| Leersia oryzoides (L.) Swartz |
POACEAE |
| Leiostemon ambiguus (Torrey) Greene |
SCROPHULARIACEAE |
| Lemna minor L. |
LEMNACEAE |
| Lemna minuscula Herter |
LEMNACEAE |
| Lepidium densiflorum Schrader |
BRASSICACEAE |
| Lepidium perfoliatum L. |
BRASSICACEAE |
| Lesquerella ludoviciana (Nuttall) S. Watson |
BRASSICACEAE |
| Leucocrinum montanum Nuttall ex A. Gray |
LILIACEAE |
| Liatris punctata Hooker |
ASTERACEAE |
| Lithospermum incisum Lehmann |
BORAGINACEAE |
| Lupinus caudatus Kellogg |
FABACEAE |
| Lupinus plattensis S. Watson |
FABACEAE |
| Lupinus pusillus Pursh |
FABACEAE |
| Lupinus pusillus Pursh ssp pusillus |
FABACEAE |
| Lycopus americanus Mühlenberg ex W. Barton |
LAMIACEAE |
| Lygodesmia juncea (Pursh) D. Don |
ASTERACEAE |
| Machaeranthera canescens (Pursh) A. Gray |
ASTERACEAE |
| Machaeranthera canescens (Pursh) A. Gray var glabra A. Gray |
ASTERACEAE |
| Machaeranthera pinnatifida (Hooker) Shinners |
ASTERACEAE |
| Machaeranthera pinnatifida (Hooker) Shinners var. pinnatifida |
ASTERACEAE |
| Machaeranthera tanacetifolia (Humboldt, Bonpland, & Kunth) Nees |
ASTERACEAE |
| Malva neglecta Wallroth |
MALVACEAE |
| Mariscus schweinitzii (Torrey) Koyama |
CYPERACEAE |
| Marsilea mucronata A. Braun |
MARSILEACEAE |
| Marsilea vestita Hooker & Greville |
MARSILEACEAE |
| Medicago lupulina L. |
FABACEAE |
| Medicago sativa L. |
FABACEAE |
| Melilotus albus Medicus |
FABACEAE |
| Melilotus officinale (L.) Pallas |
FABACEAE |
| Mentha arvensis L. |
LAMIACEAE |
| 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 |
| Monroa squarrosa (Nuttall) Torrey |
POACEAE |
| Muhlenbergia asperifolia (Nees & Meyen ex Trinius) Parodi |
POACEAE |
| Muhlenbergia cuspidata (Torrey) Rydberg |
POACEAE |
| Muhlenbergia racemosa (Michaux) Britton, Sterns, & Poggenberg |
POACEAE |
| Muhlenbergia torreyi (Kunth) A. S. Hitchcock ex Bush |
POACEAE |
| Muhlenbergia wrightii Vasey ex Coulter |
POACEAE |
| Musineon divaricatum (Pursh) Nuttal ex Torrey & Gray |
APIACEAE |
| Musineon divaricatum (Pursh) Rafinesque var divaricatum |
APIACEAE |
| Myriophyllum sibiricum Komarov |
HALORAGACEAE |
| Nassella viridula (Trinius) Barkworth |
POACEAE |
| Nuttallia decapetala (Pursh ex Sims) Greene |
LOASACEAE |
| Nuttallia nuda (Pursh) Greene |
LOASACEAE |
| Oenothera albicaulis Pursh |
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 |
| Oligosporus dracunculus (L.) Poljakov |
ASTERACEAE |
| Oligosporus filifolius (Torrey) Poljakov |
ASTERACEAE |
| Oligosporus pacificus (Nuttall) Poljakov |
ASTERACEAE |
| Opuntia macrorhiza Engelmann |
CACTACEAE |
| Opuntia polyacantha Haworth var. polyacantha |
CACTACEAE |
| Oreocarya suffruticosa (Torrey) Greene |
BORAGINACEAE |
| Oreocarya thyrsiflora Greene |
BORAGINACEAE |
| Orobanche ludoviciana Nuttall |
OROBANCHACEAE |
| Orobanche multiflora Nuttall |
OROBANCHACEAE |
| Orophaca sericea (Nuttall) Britton |
FABACEAE |
| Oxybaphus decumbens (Nuttall) Sweet |
NYCTAGINACEAE |
| 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 tridenticulata (Rydberg) Weber & Löve |
ASTERACEAE |
| Palafoxia sphacelata (Nuttall ex Torrey) Cory |
ASTERACEAE |
| Panicum capillare L. |
POACEAE |
| Panicum obtusum Humboldt, Bonpland, & Kunth |
POACEAE |
| Panicum virgatum L. |
POACEAE |
| Parthenocissus vitacea (Knerr) A. S. Hitchcock |
VITACEAE |
| Pascopyrum smithii (Rydberg) Löve |
POACEAE |
| Paspalum setaceum Michaux var stramineum (Nash) D. Banks |
POACEAE |
| Pectis angustifolia Torrey |
ASTERACEAE |
| Penstemon albidus Nuttall |
SCROPHULARIACEAE |
| Penstemon angustifolius Nuttall ex Pursh |
SCROPHULARIACEAE |
| Penstemon angustifolius Nuttall ex Pursh ssp caudatus (Heller) Keck |
SCROPHULARIACEAE |
| Penstemon buckleyi Pennell |
SCROPHULARIACEAE |
| Persicaria bicornis (Rafinesque) Nieuwland |
POLYGONACEAE |
| Persicaria lapathifolia (L.) S. Gray |
POLYGONACEAE |
| Persicaria punctata (Elliott) Small |
POLYGONACEAE |
| Phalaroides arundinacea (L.) Rauschert |
POACEAE |
| Phlox andicola (Nuttall ex Torrey & Gray) E. Nelson |
POLEMONIACEAE |
| Phlox hoodii Richardson |
POLEMONIACEAE |
| Phyla cuneifolia (Torrey) Greene |
VERBENACEAE |
| Physalis hederifolia A. Gray var. comata (Rydberg) Waterfall |
SOLANACEAE |
| Physalis pumila Nuttall ssp hispida (Waterfall) Hinton |
SOLANACEAE |
| Picradenia odorata (De Candolle) Britton |
ASTERACEAE |
| Picradeniopsis oppositifolia (Nuttall) Rydberg |
ASTERACEAE |
| Picradeniopsis woodhousei (A. Gray) Rydberg |
ASTERACEAE |
| Plantago lanceolata L. |
PLANTAGINACEAE |
| Plantago patagonica Jacquin |
PLANTAGINACEAE |
| Poa arida Vasey |
POACEAE |
| Poa compressa L. |
POACEAE |
| Poa pratensis L. |
POACEAE |
| Podospermum laciniatum (L.) De Candolle |
ASTERACEAE |
| Poinsettia dentata (Michaux) Klotsch & Garcke |
EUPHORBIACEAE |
| 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 |
| Portulaca oleracea L. |
PORTULACACEAE |
| Potamogeton foliosus Rafinesque |
POTAMOGETONACEAE |
| Psilostrophe tagetinae (Nuttall) Greene |
ASTERACEAE |
| Psoralidium lanceolatum (Pursh) Rydberg |
FABACEAE |
| Psoralidium tenuiflorum (Pursh) Rydberg |
FABACEAE |
| Puccinellia distans (L.) Parlatore |
POACEAE |
| Quincula lobata (Torrey) Rafinesque |
SOLANACEAE |
| Ratibida columnifera (Nuttall) Wooton & Standley |
ASTERACEAE |
| Ratibida tagetes (James) Barnhart |
ASTERACEAE |
| Rayjacksonia annua (Rydberg) R. L. Hartman & M. A. Lane |
ASTERACEAE |
| Rhus aromatica Aiton ssp trilobata (Nuttall ex Torrey & Gray) W. A. Weber |
ANACARDIACEAE |
| Ribes aureum Pursh |
GROSSULARIACEAE |
| Ribes cereum Douglas |
GROSSULARIACEAE |
| Rorippa sinuata (Nuttall in Torrey & Gray) A. S. Hitchcock |
BRASSICACEAE |
| Rosa arkansana T. C. Porter |
ROSACEAE |
| Rosa woodsii Lindley |
ROSACEAE |
| Rumex altissimus Wood |
POLYGONACEAE |
| Rumex crispus L. |
POLYGONACEAE |
| Rumex maritimus L. ssp fueginus (Philippi) Hultén |
POLYGONACEAE |
| Rumex stenophyllus Ledebour |
POLYGONACEAE |
| Rumex venosus Pursh |
POLYGONACEAE |
| Sabina scopulorum (Sargent) Rydberg |
CUPRESSACEAE |
| Sagittaria cuneata Sheldon |
ALISMATACEAE |
| Salix amygdaloides Andersson |
SALICACEAE |
| Salix exigua Nuttall |
SALICACEAE |
| Salix exigua Nuttall ssp exigua |
SALICACEAE |
| Salix exigua Nuttall ssp interior (Rowlee) Cronquist |
SALICACEAE |
| Salix exigua Nuttall var pedicellata (Andersson) Cronquist |
SALICACEAE |
| Salsola australis R. Brown |
CHENOPODIACEAE |
| Salsola collina Pallas |
CHENOPODIACEAE |
| Salvia reflexa Hornemann |
LAMIACEAE |
| 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 |
| Scutellaria lateriflora L. |
LAMIACEAE |
| Senecio integerrimus Nuttall |
ASTERACEAE |
| Senecio riddellii Torrey & Gray |
ASTERACEAE |
| Setaria viridis (L.) P. Beauvois |
POACEAE |
| Shinnersoseris rostrata (A. Gray) Tomb |
ASTERACEAE |
| Sisymbrium altissimum L. |
BRASSICACEAE |
| Solanum rostratum Dunal |
SOLANACEAE |
| Solidago canadensis L. |
ASTERACEAE |
| Solidago gigantea Aiton |
ASTERACEAE |
| Solidago mollis Bartling |
ASTERACEAE |
| Sonchus asper (L.) J. Hill |
ASTERACEAE |
| Sorghastrum avenaceum (Michaux) Nash |
POACEAE |
| Sparganium eurycarpum Engelmann ex A. Gray |
SPARGANIACEAE |
| Spartina pectinata Link |
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 |
| Stephanomeria pauciflora (Torrey) A. Nelson |
ASTERACEAE |
| Stuckenia pectinata (L.) Börner |
POTAMOGETONACEAE |
| Suaeda calceoliformis (Hooker) Moquin |
CHENOPODIACEAE |
| Suckleya suckleyana (Torrey) Rydberg |
CHENOPODIACEAE |
| Talinum parviflorum Nuttall ex Torrey & Gray |
PORTULACACEAE |
| Tamarix ramosissima Ledebour |
TAMARICACEAE |
| Taraxacum officinale G. H. Weber ex Wiggers |
ASTERACEAE |
| Tetraneuris acaulis (Pursh) Greene |
ASTERACEAE |
| Tetraneuris acaulis (Pursh) Greene var acaulis |
ASTERACEAE |
| Thelesperma filifolium (Hooker) A. Gray |
ASTERACEAE |
| Thelesperma megapotamicum (Sprengel) Kuntze |
ASTERACEAE |
| Thermopsis rhombifolia (Nuttall ex Pursh) Richardson |
FABACEAE |
| Thlaspi arvense L. |
BRASSICACEAE |
| Thymophylla aurea (A. Gray) Greene |
ASTERACEAE |
| Townsendia exscapa (Richardson) T. C. Porter |
ASTERACEAE |
| Tradescantia occidentalis (Britton) Smyth |
COMMELINACEAE |
| Tradescantia occidentalis (Britton) Smyth var scopulorum (Rose) Anderson & Woodson |
COMMELINACEAE |
| Trifolium fragiferum L. |
FABACEAE |
| Triglochin maritima L. |
JUNCAGINACEAE |
| Triplasis purpurea (Walter) Chapman |
POACEAE |
| Tripterocalyx micranthus (Torrey) Hooker |
NYCTAGINACEAE |
| Typha angustifolia L. |
TYPHACEAE |
| Typha domingensis Persoon |
TYPHACEAE |
| Typha latifolia L. |
TYPHACEAE |
| Ulmus pumila L. |
ULMACEAE |
| Verbena bracteata Lagasca & Rodriguez |
VERBENACEAE |
| Verbena hastata L. |
VERBENACEAE |
| Veronica anagallis-aquatica L. |
SCROPHULARIACEAE |
| Veronica catenata Pennell |
SCROPHULARIACEAE |
| Vexibia nuttalliana (B. Turner) W. A. Weber |
FABACEAE |
| Vicia americana Mühlenberg var minor Hooker |
FABACEAE |
| Virgulus ericoides (L.) Reveal & Keener |
ASTERACEAE |
| Virgulus falcatus (Lindley) Reveal & Keener |
ASTERACEAE |
| Virgulus fendleri (A. Gray) Reveal & Keener |
ASTERACEAE |
| Vulpia octoflora (Walter) Rydberg |
POACEAE |
| Xanthium strumarium L. |
ASTERACEAE |
| Ximenesia encelioides Cavanilles |
ASTERACEAE |
| Yucca glauca Nuttall in Fraser |
AGAVACEAE |
| Zannichellia palustris L. |
ZANNICHELLIACEAE |
| Zinnia grandiflora Nuttall |
ASTERACEAE |
