Lists of Nebraska Species
The species outlined here include all of Nebraska’s native and naturalized species of vascular plants-ferns, fern allies, conifers and flowering plant presented a list, browsable by family, genus and common name. We’ve added a few species that appear to have escaped cultivation and are persisting or potentially could do so.
Also present are some commonly cultivated plants that do not escape and become established as part of the flora, but tend to re-seed easily in gardens (petunias or bachelor buttons, e.g.) or persist as abandoned plantings around old home sites (lilac and mock-orange, e.g.) These are sometimes mistaken for naturalized species. Also included on the list are a few native species that occur in adjacent states and are expected in Nebraska.
The species list was developed during preparation of "The Flora of Nebraska" (Kaul, Sutherland, and Rolfsmeier, 2011) manual. Nearly all entries were confirmed by field collections or examination of herbarium voucher specimens
List by Family
Phylum: Lycopodiophyta
| Isoetaceae | Selaginellaceae |
Pylum: Psilotophyta
| Ophioglossaceae |
Phylum: Equisetophyta (Horsetails)
| Equisetaceae |
Phylum: Polypodiophyta (Ferns)
| HETEROSPOROUS FERNS Azollaceae Marsileaceae |
Phylum: Coniferophyta (Gymnosperms)
| Cupressaceae | Pinaceae |
Phylum: Magnoliophyta (Angiosperms)
| Acanthaceae Aceraceae Acoraceae Adoxaceae Agavaceae Alismataceae Amaranthaceae Anacardiaceae Annonaceae Apiaceae (Umbelliferae, alternate name) Apocynaceae (including Asclepiadaceae) Araceae Araliaceae Aristolochiaceae Asclepiadaceae (see Apocynaceae) Asteraceae (Compositae, alternate name) Balsaminaceae Berberidaceae Betulaceae Bignoniaceae Boraginaceae Brassicaceae (Cruciferae, alternate name) Butomaceae Cabombaceae Cactaceae Caesalpiniaceae Callitrichaceae Campanulaceae Cannabaceae Caprifoliaceae (see also Adoxaceae) Caryophyllaceae Celastraceae Celtidaceae Ceratophyllaceae Chenopodiaceae Cistaceae Cleomaceae (Capparaceae, in part) Commelinaceae Convolvulaceae (including Cuscutaceae) Cornaceae Crassulaceae Cucurbitaceae Cuscutaceae (see Convolvulaceae) Cyperaceae Dioscoreaceae Dipsacaceae Ebenaceae Elaeagnaceae Elatinaceae Ericaceae (including Monotropaceae & Pyrolaceae) Euphorbiaceae Fabaceae (Leguminosae, alternate name) Fagaceae Fumariaceae Gentianaceae Geraniaceae Grossulariaceae Haloragaceae Hippocastanaceae Hippuridaceae Hydrangeaceae Hydrocharitaceae (including Najadaceae) Hydrophyllaceae Hypericaceae Iridaceae | Juglandaceae Juncaceae Juncaginaceae Lamiaceae (Labiatae, alternate name) Lemnaceae Lentibulariaceae Liliaceae (sensu lato) Linaceae Loasaceae Lythraceae Malvaceae Martyniaceae Menispermaceae Menyanthaceae Mimosaceae Molluginaceae Moraceae Nelumbonaceae Nyctaginaceae Nymphaeaceae Oleaceae Onagraceae Orchidaceae Oxalidaceae Papaveraceae (see also Fumariaceae) Phrymaceae Phytolaccaceae Plantaginaceae (sensu stricto) Platanaceae Poaceae (Gramineae, alternate name) Polemoniaceae Polygalaceae Polygonaceae Pontederiaceae Portulacaceae Potamogetonaceae Primulaceae Ranunculaceae Resedaceae Rhamnaceae Rosaceae Rubiaceae Ruppiaceae Rutaceae Salicaceae Santalaceae Saururaceae Saxifragaceae Scrophulariaceae (sensu lato) Simaroubaceae Smilacaceae Solanaceae Sparganiaceae Staphyleaceae Tamaricaceae Thymelaeaceae Tiliaceae Typhaceae Ulmaceae (see also Celtidaceae) Urticaceae Verbenaceae Violaceae Vitaceae Xyridaceae Zannichelliaceae Zygophyllaceae |
List by Genus
A
Abronia fragrans
Abutilon theophrasti, 1886
Acalypha ostryifolia
Acalypha rhomboidea
Acalypha virginica
Acer ginnala
Acer glabrum
Acer negundo
Acer platanoides
Acer saccharinum
Achillea millefolium
Acorus americanus
Acorus calamus, 1974
Actaea pachypoda
Actaea rubra
Adiantum pedatum
Aegilops cylindrica, 1966
Aesculus glabra v. arguta
Agalinis aspera
Agalinis purpurea
Agalinis skinneriana
Agalinis tenuifolia v. macrophylla
Agalinis tenuifolia v. parvifolia
Agastache foeniculum
Agastache nepetoides
Agastache scrophulariifolia
Ageratina altissima
Agoseris glauca
Agrimonia gryposepala
Agrimonia parviflora
Agrimonia pubescens
Agrimonia striata
Agropyron cristatum, 1961
Agrostemma githago, 1909
Agrostis exarata ssp. minor
Agrostis hyemalis
Agrostis scabra
Agrostis stolonifera, 1886
Ailanthus altissima, 1911
Alcea rosea
Alisma gramineum
Alisma triviale
Alliaria petiolata, 1975
Allium canadense v. canadense
Allium canadense v. fraseri
Allium canadense v. lavendulare
Allium cepa
Allium cernuum
Allium drummondii
Allium perdulce
Allium sativum
Allium schoenoprasum
Allium textile
Allium tricoccum v. burdickii
Allium tuberosum
Allium vineale, 1967
Alopecurus aequalis
Alopecurus arundinaceus, 1989
Alopecurus carolinianus
Alopecurus geniculatus
Alopecurus pratensis, 1968
Althaea officinalis
Alyssum alyssoides, 1890
Alyssum desertorum, 1950
Alyssum simplex, 1995
Amaranthus albus
Amaranthus arenicola
Amaranthus blitoides
Amaranthus californicus
Amaranthus cruentus, 1907
Amaranthus hybridus
Amaranthus hypochondriacus
Amaranthus palmeri
Amaranthus powellii, 1977
Amaranthus retroflexus
Amaranthus spinosus, 1881
Amaranthus tuberculatus
Ambrosia acanthicarpa
Ambrosia artemisiifolia
Ambrosia grayi
Ambrosia psilostachya
Ambrosia tomentosa
Ambrosia trifida
Amelanchier alnifolia
Amelanchier arborea
Amelanchier humilis
Ammannia auriculata
Ammannia coccinea
Ammannia robusta
Amorpha canescens
Amorpha fruticosa
Amorpha nana
Ampelopsis cordata
Amphicarpaea bracteata
Amphiscirpus nevadensis
Amsinckia intermedia, 1914
Amsinckia lycopsoides, 1906
Anagallis arvensis, 1898
Anagallis minima
Anaphalis margaritacea
Andropogon gerardii ssp. gerardii
Andropogon gerardii ssp. hallii
Andropogon x chrysocomis
Androsace occidentalis
Anemone canadensis
Anemone caroliniana
Anemone cylindrica
Anemone multifida
Anemone patens v. multifida
Anemone virginiana
Anemopsis californica, 1991
Anethum graveolens
Antennaria dimorpha
Antennaria howellii ssp. neodioica
Antennaria microphylla
Antennaria neglecta
Antennaria parlinii ssp. fallax
Antennaria parvifolia
Anthemis arvensis, 1914
Anthemis cotula, 1877
Anthriscus caucalis, 1999
Apios americana
Apocynum androsaemifolium
Apocynum cannabinum
Apocynum x floribundum
Aquilegia canadensis
Arabidopsis thaliana
Arabis canadensis
Arabis glabraArabis hirsuta v. pycnocarpa
Arabis holboellii v. collinsii
Arabis holboellii v. pinetorum
Arabis shortii
Aralia nudicaulis
Aralia racemosa
Arctium minus, 1885
Arctium tomentosum, 1978
Arctostaphylos uva-ursi
Arenaria lateriflora
Arenaria serpyllifolia, 1885
Argemone hispida, 1975
Argemone polyanthemos
Argyrochosma dealbata
Arisaema dracontium
Arisaema triphyllum
Aristida basiramea
Aristida curtissii
Aristida desmantha, 1892
Aristida longespica v. geniculata
Aristida oligantha
Aristida purpurascens
Aristida purpurea v. longiseta
Aristida purpurea v. robusta
Aristida tuberculosa, 1974
Armoracia rusticana,1958
Arnoglossum atriplicifolium
Arnoglossum plantagineum
Artemisia absinthium, 1995
Artemisia annua, 1990
Artemisia biennis
Artemisia campestris ssp. borealis
Artemisia campestris ssp. caudata
Artemisia cana
Artemisia carruthii
Artemisia dracunculus ssp. dracunculus
Artemisia dracunculus ssp. glauca
Artemisia filifolia
Artemisia frigida
Artemisia ludoviciana v. ludoviciana
Artemisia ludoviciana v. mexicana
Artemisia tridentata v. wyomingensis
Asarum canadense, 1950s
Asclepias amplexicaulis
Asclepias arenaria
Asclepias asperula ssp. capricornu
Asclepias engelmanniana
Asclepias incarnata
Asclepias lanuginosa
Asclepias latifolia
Asclepias pumila
Asclepias purpurascens
Asclepias speciosa
Asclepias speciosa x syriaca
Asclepias stenophylla
Asclepias sullivantii
Asclepias syriaca
Asclepias tuberosa ssp. interior
Asclepias verticillata
Asclepias viridiflora
Asclepias viridis
Asimina triloba
Asparagus officinalis
Asperugo procumbens, 1961
Asplenium platyneuron
Aster ascendens
Aster borealis
Aster brachyactis
Aster drummondii
Aster ericoides ssp. ericoides
Aster ericoides ssp. pansus
Aster falcatus ssp. commutatus
Aster fendleri
Aster laevis v. geyeri
Aster laevis v. laevis
Aster lanceolatus ssp. hesperius
Aster lanceolatus ssp. lanceolatus
Aster lateriflorus
Aster novae-angliae
Aster oblongifolius
Aster ontarionis
Aster oolentangiensis
Aster pilosus
Aster praealtus v. nebraskensis
Aster sagittifolius
Aster sericeus
Aster subulatus v. ligulatus
Aster subulatus v. subulatus
Aster urophyllus
Astragalus agrestis
Astragalus barrii
Astragalus bisulcatus
Astragalus bodinii
Astragalus canadensis
Astragalus ceramicus v. filifolius
Astragalus cicer, 1977
Astragalus crassicarpus
Astragalus drummondii
Astragalus flexuosus
Astragalus gilviflorus
Astragalus gracilis
Astragalus hyalinus
Astragalus kentrophyta
Astragalus laxmanii v. robustior
Astragalus lotiflorus
Astragalus missouriensis
Astragalus mollissimus
Astragalus pectinatus
Astragalus plattensis
Astragalus racemosus
Astragalus sericoleucus
Astragalus shortianus
Astragalus spatulatus
Astragalus tenellus
Athyrium filix-femina ssp. cyclosorum
Atriplex argentea
Atriplex canescens v. aptera
Atriplex canescens v. canescens
Atriplex dioica Raf.
Atriplex heterosperma, 1970
Atriplex hortensis, 1890s
Atriplex patula, 1934
Atriplex powellii
Atriplex prostrata, 1990s
Atriplex rosea, 1912
Atriplex suckleyi
Avena fatua v. fatua, 1962
Avena fatua v. sativa, 1886
Azolla mexicana
B
Bacopa rotundifolia
Ballota nigra, 1983
Baptisia alba v. macrophylla
Baptisia australis v. australis
Baptisia australis v. minor
Baptisia bracteata v. leucophaea
Barbarea vulgaris, 1907
Beckmannia syzigachne
Belamcanda chinensis, 1907
Berberis repens
Berberis thunbergii, 1991
Berberis vulgaris; 1880s
Bergia texana
Berteroa incana, 1909
Berula erecta v. incisa
Besseya wyomingensis
Betula occidentalis
Betula papyrifera
Bidens aristosa v. retrorsa
Bidens bipinnata
Bidens cernua
Bidens comosa
Bidens connata v. gracilipes
Bidens connata v. petiolata
Bidens coronata
Bidens frondosa
Bidens polylepis
Bidens vulgata
Blephilia hirsuta
Boehmeria cylindrica
Bolboschoenus fluviatilis
Bolboschoenus maritimus ssp. paludosus
Boltonia asteroides v. latisquama
Boltonia asteroides v. recognita
Bothriochloa bladhii
Bothriochloa ischaemum
Bothriochloa laguroides ssp. torreyana
Botrychium campestre
Botrychium simplex
Botrychium virginianum
Bouteloua curtipendula
Bouteloua gracilis
Bouteloua hirsuta
Bouteloua simplex, 1992
Brachyelytrum erectum
Brasenia schreberi
Brassica juncea, 1890
Brassica nigra, 1875
Brassica rapa ssp. campestris, 1897
Brickellia eupatorioides v. corymbulosa
Brickellia grandiflora
Bromus biebersteinii
Bromus briziformis, 1911
Bromus carinatus
Bromus ciliatus
Bromus hordeaceus, 1892
Bromus inermis, 1902
Bromus japonicus, 1900
Bromus latiglumis
Bromus porteri
Bromus pubescens
Bromus secalinus, 1889
Bromus squarrosus, 1909
Bromus tectorum,1897
Buchloe dactyloides
Bulbostylis capillaris
Butomus umbellatus,1999
C
Calamagrostis canadensis
Calamagrostis stricta
Calamovilfa gigantea
Calamovilfa longifolia
Callirhoe alcaeoides
Callirhoe involucrata
Callitriche hermaphroditica
Callitriche palustris
Calochortus gunnisonii
Calochortus nuttallii
Caltha palustris
Calylophus lavandulifolius
Calylophus serrulatus
Calystegia macounii
Calystegia sepium ssp. angulata
Camelina microcarpa
Camelina sativa, 1889
Campanula americana
Campanula aparinoides
Campanula rapunculoides
Campanula rotundifolia
Campsis radicans
Cannabis sativa, 1877
Capsella bursa-pastoris, 1884
Caragana arborescens
Cardamine bulbosa
Cardamine concatenata
Cardamine flexuosa
Cardamine pensylvanica
Carduus acanthoides, 1930
Carduus nutans, 1932
Carex aggregata
Carex albicans v. albicans
Carex albursina
Carex aquatilis v. substricta
Carex atherodes
Carex aurea
Carex aureolensis
Carex austrina
Carex bebbii
Carex bicknellii
Carex blanda
Carex brachyglossa
Carex brevior
Carex bushii
Carex buxbaumii
Carex cephalophora
Carex comosa
Carex conjuncta
Carex crawei
Carex crinita
Carex cristatella
Carex crus-corvi
Carex davisii
Carex diandra
Carex douglasii
Carex eburnea
Carex eleocharis
Carex emoryi
Carex filifolia
Carex frankii
Carex granularis v. haleana
Carex gravida
Carex grisea
Carex heliophila
Carex hirtifolia
Carex hitchcockiana
Carex hyalinolepis
Carex hystericina
Carex interior
Carex jamesii
Carex lacustris
Carex laeviconica
Carex laeviconica x trichocarpa
Carex lasiocarpa
Carex leavenworthii
Carex limosa
Carex lupulina
Carex meadii
Carex melanostachya, 1989
Carex mesochorea
Carex missouriensis
Carex molesta
Carex nebrascensis
Carex normalis
Carex oligocarpa
Carex parryana v. unica
Carex peckii
Carex pellita
Carex praegracilis
Carex prairea
Carex radiata
Carex rosea
Carex rossii
Carex sartwellii
Carex saximontana
Carex scoparia
Carex sparganioides
Carex sprengelii
Carex squarrosa
Carex stipata
Carex tenera v. echinodes
Carex tetanica
Carex texensis, 1991
Carex tribuloides
Carex umbellata
Carex utriculata
Carex vesicaria
Carex vulpinoidea
Carex xerantica
Carthamus tinctorius
Carya cordiformis
Carya ovata
Castilleja sessiliflora
Catabrosa aquatica
Catalpa bignonioides
Catalpa speciosa
Caulophyllum thalictroides
Ceanothus americanus v. pitcheri
Ceanothus herbaceus v. pubescens
Celastrus scandens
Celtis occidentalis
Cenchrus longispinus
Centaurea cyanus, 1892
Centaurea diffusa, 1990
Centaurea nigra, 1992
Centaurea repens, 1931
Centaurea solstitialis, 1908
Centaurea stoebe ssp. micranthos, 1917
Centaurium exaltatum
Centaurium pulchellum, 1981
Cephalanthus occidentalis
Cerastium arvense ssp. strictum
Cerastium brachypodum
Cerastium fontanum ssp. vulgare, 1890
Cerastium nutans
Cerastium semidecandrum, 1987
Ceratophyllum demersum
Cercis canadensis
Cercocarpus montanus
Chaenactis douglasii
Chaenorrhinum minus
Chaerophyllum procumbens
Chaerophyllum tainturieri
Chaetopappa ericoides
Chamaecrista fasciculata
Chamerion angustifolium
Chasmanthium latifolium, 1999
Cheilanthes feei
Chelidonium majus
Chenopodium album
Chenopodium ambrosioides, 1898
Chenopodium berlandieri
Chenopodium botrys, 1891
Chenopodium capitatum, 1891
Chenopodium cycloides
Chenopodium desiccatum
Chenopodium fremontii
Chenopodium glaucum v. glaucum, 1897
Chenopodium glaucum v. salinum
Chenopodium incanum
Chenopodium missouriense
Chenopodium pallescens
Chenopodium pratericola
Chenopodium rubrum
Chenopodium simplex
Chenopodium standleyanum
Chenopodium strictum
Chenopodium subglabrum
Chenopodium urbicum, 1889
Chloris verticillata
Chloris virgata, 1972
Chorispora tenella, 1914
Chrysothamnus viscidiflorus
Cichorium intybus, 1880
Cicuta bulbifera
Cicuta maculata v. angustifolia
Cicuta maculata v. bolanderi
Cicuta maculata v. maculata
Cinna arundinacea
Circaea lutetiana ssp. canadensis
Cirsium altissimum
Cirsium arvense, 1886
Cirsium canescens
Cirsium discolor
Cirsium flodmanii
Cirsium ochrocentrum
Cirsium undulatum
Cirsium vulgare, 1890
Claytonia virginica
Clematis fremontii
Clematis hirsutissima
Clematis ligusticifolia
Clematis pitcheri
Clematis terniflora
Clematis virginiana
Cleome hassleriana
Cleome serrulata
Cleomella angustifolia
Coeloglossum viride v. virescens
Collinsia parviflora
Collomia linearis
Comandra umbellata ssp. pallida
Comandra umbellata ssp. umbellata
Commelina communis, 1914
Commelina erecta v. angustifolia
Conioselinum chinense, 1905
Conium maculatum, 1936
Conringia orientalis, 1908
Consolida ajacis
Convallaria majalis
Convolvulus arvensis, 1889
Conyza canadensis
Conyza ramosissima
Corallorhiza maculata v. occidentalis
Corallorhiza odontorhiza
Corallorhiza striata v. flavida
Corallorhiza wisteriana
Coreopsis lanceolata
Coreopsis palmata
Coreopsis tinctoria
Corispermum americanum
Corispermum villosum
Corispermum welshii
Cornus alternifolia
Cornus amomum ssp. obliqua
Cornus drummondii
Cornus sericea
Corydalis aurea
Corydalis curvisiliqua ssp. occidentalis
Corydalis flavula
Corydalis micrantha
Corylus americana
Coryphantha missouriensis
Coryphantha vivipara
Crataegus chrysocarpa
Crataegus macracantha v. occidentalis
Crataegus mollis
Crepis atribarba
Crepis occidentalis ssp. costata
Crepis runcinata
Crepis tectorum, 1891
Crotalaria sagittalis, 1873
Croton capitatus
Croton glandulosus v. septentrionalis
Croton monanthogynus
Croton texensis
Cryptantha cana
Cryptantha celosioides
Cryptantha cinerea v. jamesii
Cryptantha fendleri
Cryptantha minima
Cryptantha thyrsiflora
Cryptotaenia canadensis
Cucurbita foetidissima
Cuphea viscosissima
Cuscuta approximata
Cuscuta campestris
Cuscuta cephalanthi
Cuscuta coryli
Cuscuta cuspidata
Cuscuta epithymum, 1903
Cuscuta glomerata
Cuscuta gronovii
Cuscuta indecora
Cuscuta polygonorum
Cuscuta umbrosa
Cyclanthera dissecta
Cycloloma atriplicifolium
Cymbalaria muralis
Cymopterus acaulis
Cymopterus montanus
Cynanchum laeve
Cynodon dactylon
Cynodon transvaalensis, 1968
Cynoglossum officinale, 1873
Cyperus acuminatus
Cyperus bipartitus
Cyperus diandrus
Cyperus difformis, 1968
Cyperus engelmannii
Cyperus erythrorhizos
Cyperus esculentus v. leptostachyus
Cyperus fuscus, 1968
Cyperus lupulinus ssp. lupulinus
Cyperus lupulinus ssp. macilentus
Cyperus lupulinus x schweinitzii
Cyperus odoratus
Cyperus schweinitzii
Cyperus squarrosus
Cyperus strigosus
Cypripedium candidum
Cypripedium parviflorum
Cystopteris bulbifera
Cystopteris fragilis
Cystopteris protrusa
Cystopteris tenuis
D
Dactylis glomerata, 1885
Dalea aurea
Dalea candida v. candida
Dalea candida v. oligophylla
Dalea cylindriceps
Dalea enneandra
Dalea leporina
Dalea multiflora
Dalea purpurea v. arenicola
Dalea purpurea v. purpurea
Dalea villosa
Danthonia spicata
Dasistoma macrophylla
Datura stramonium, 1872
Datura wrightii
Daucus carota, 1894
Delphinium geyeri
Delphinium nuttallianum
Delphinium tricorne
Delphinium virescens
Deschampsia cespitosa, 2005
Descurainea pinnata
Descurainia sophia, 1897
Desmanthus illinoensis
Desmodium canadense
Desmodium canescens
Desmodium cuspidatum
Desmodium glutinosum
Desmodium illinoense
Desmodium paniculatum
Desmodium perplexum
Desmodium sessilifolium
Dianthus armeria, 1935
Dianthus barbatus, 1978
Diarrhena obovata
Dicentra cucullaria
Dieteria canescens v. canescens
Dieteria canescens v. glabra
Dieteria canescens v. nebraskana
Digitalis lanata, 1991
Digitaria ciliaris, 1967
Digitaria cognata
Digitaria ischaemum, 1898
Digitaria sanguinalis, 1884
Diodia teres
Dioscorea villosa
Diospyros virginiana, 1979
Diplotaxis muralis, 1916
Dipsacus fullonum, 1974
Dipsacus laciniatus, 1972
Distichlis spicata
Dodecatheon pulchellum
Doellingeria umbellata v. pubens
Draba brachycarpa
Draba cuneifolia
Draba nemorosa
Draba reptans
Dracocephalum moldavica, 1889
Dracocephalum parviflorum
Drymocallis arguta
Dryopteris carthusiana
Dryopteris cristata
Dulichium arundinaceum
Dyssodia papposa
E
Echinacea angustifolia
Echinacea pallida
Echinacea purpurea
Echinocereus viridiflorus
Echinochloa crus-galli, 1891
Echinochloa muricata v. microstachya
Echinochloa muricata v. muricata
Echinocystis lobata
Echinodorus berteroi
Echinops sphaerocephalus, 1960s
Echium vulgare, 1888
Eclipta prostrata
Elaeagnus angustifolia
Elaeagnus umbellata, 1986
Elatine brachysperma
Elatine rubella
Eleocharis acicularis
Eleocharis atropurpurea
Eleocharis coloradoensis
Eleocharis compressa
Eleocharis elliptica
Eleocharis engelmannii
Eleocharis erythropoda
Eleocharis geniculata
Eleocharis obtusa
Eleocharis palustris
Eleocharis quinqueflora
Eleocharis rostellata
Eleocharis wolfii
Eleusine indica, 1907
Ellisia nyctelea
Elodea bifoliata
Elodea canadensis
Elodea nuttallii
Elyhordeum iowense
Elyhordeum macounii
Elyhordeum montanense
Elymus canadensis
Elymus cinereus
Elymus curvatus [disc. with E. virginicus]
Elymus elongatus, 1961
Elymus elymoides ssp. brevifolius
Elymus elymoides ssp. elymoides
Elymus hispidus, 1968
Elymus hystrix
Elymus junceus, 1973
Elymus lanceolatus ssp. albicans
Elymus lanceolatus ssp. lanceolatus
Elymus macgregorii
Elymus repens, 1905
Elymus smithii
Elymus spicatus
Elymus trachycaulus ssp. subsecundus
Elymus trachycaulus ssp. trachycaulus
Elymus villosus
Elymus virginicus
Engelmannia pinnatifida
Epilobium brachycarpum
Epilobium ciliatum
Epilobium coloratum
Epilobium leptophyllum
Equisetum arvense
Equisetum fluviatile
Equisetum hyemale v. affine
Equisetum laevigatum
Equisetum x ferrissii
Eragrostis barrelieri, 1983
Eragrostis capillaris
Eragrostis cilianensis, 1874
Eragrostis curvula, 1984
Eragrostis hypnoides
Eragrostis minor, 1969
Eragrostis pectinacea
Eragrostis pilosa v. perplexa
Eragrostis reptans
Eragrostis secundiflora ssp. oxylepis
Eragrostis spectabilis
Eragrostis trichodes
Erechtites hieraciifolius
Eremogone hookeri
Eremopyrum triticeum, 1995
Ericameria nauseosa v. graveolens
Ericameria nauseosa v. nauseosa
Ericameria nauseosa v. oreophila
Ericameria parryi v. howardii
Erigeron annuus
Erigeron bellidiastrum
Erigeron caespitosus
Erigeron canus
Erigeron divergens
Erigeron flagellaris
Erigeron lonchophyllus
Erigeron ochroleucus var. scribneri
Erigeron philadelphicus
Erigeron pumilis
Erigeron strigosus
Erigeron subtrinervis
Erigeron vetensis
Eriochloa contracta
Eriochloa villosa, 1989
Eriogonum alatum
Eriogonum annuum
Eriogonum brevicaule
Eriogonum cernuum
Eriogonum effusum
Eriogonum flavum
Eriogonum gordonii
Eriogonum pauciflorum
Eriogonum x nebraskense
Eriophorum angustifolium
Eriophorum gracile
Erodium cicutarium, 1914
Eruca vesicaria ssp. sativa, 1910
Erucastrum gallicum
Eryngium yuccifolium
Erysimum asperum
Erysimum cheiranthoides
Erysimum inconspicuum
Erysimum repandum, 1897
Erythronium albidum
Erythronium mesochoreum
Eschscholzia californica, 1980s
Euclidium syriacum, 1991
Euonymus atropurpurea
Euonymus europaea
Euonymus fortunei
Eupatorium altissimum
Eupatorium maculatum ssp. bruneri
Eupatorium perfoliatum
Eupatorium purpureum v. holzingeri
Eupatorium purpureum v. purpureum
Eupatorium serotinum
Euphorbia corollata
Euphorbia cyathophora
Euphorbia cyparissias, 1878
Euphorbia davidii
Euphorbia dentata
Euphorbia esula v. esula, 1929
Euphorbia esula v. uralensis, 1980
Euphorbia fendleri
Euphorbia geyeri
Euphorbia glyptosperma
Euphorbia hexagona
Euphorbia maculata
Euphorbia marginata
Euphorbia missurica v. missurica
Euphorbia missurica v. petaloidea
Euphorbia nutans
Euphorbia prostrata
Euphorbia robusta
Euphorbia serpens
Euphorbia serpyllifolia
Euphorbia spathulata
Euphorbia stictospora
Eustoma grandiflorum
Euthamia gymnospermoides
Euthamia occidentalis
Evax prolifera
Evolvulus nuttallianus
F
Fagopyrum esculentum
Falcaria vulgaris, 1946
Festuca rubra
Festuca saximontana
Festuca subverticillata
Festuca trachyphylla
Filago arvensis, 1995
Fimbristylis autumnalis
Fimbristylis puberula v. interior
Fimbristylis puberula v. puberula
Fimbristylis vahlii
Foeniculum vulgare, 1892
Fragaria vesca ssp. americana
Fragaria virginiana ssp. glauca
Fragaria virginiana ssp. virginiana
Fraxinus americana
Fraxinus pennsylvanica
Fritillaria atropurpurea
Froelichia floridana
Froelichia gracilis
Fuirena simplex v. aristulata
Fumaria officinalis ssp. wirtgenii, 1980s
Fumaria vaillantii, 1995
G
Gaillardia pulchella
Galearis spectabilis
Galega officinalis, 1935
Galeopsis bifida, 1952
Galinsoga parviflora, 1942
Galinsoga quadriradiata, 1927
Galium aparine
Galium boreale
Galium circaezans v. hypomalacum
Galium concinnum
Galium obtusum
Galium tinctorium
Galium trifidum
Galium triflorum
Galium verum, 1974
Gaura coccinea
Gaura longiflora
Gaura neomexicana ssp. coloradoensis
Gaura parviflora
Gentiana andrewsii v. dakotica
Gentiana flavida
Gentiana puberulenta
Geranium carolinianum
Geranium maculatum
Geranium pusillum, 1891
Geranium viscosissimum
Geum aleppicum
Geum canadense
Geum laciniatum v. trichocarpum
Geum vernum
Gilia pinnatifida
Glaux maritima
Glechoma hederacea, 1889
Gleditsia triacanthos
Glyceria borealis
Glyceria grandis
Glyceria striata
Glycine max
Glycyrrhiza lepidota
Gnaphalium jaliscense, 1968
Gnaphalium obtusifolium
Gnaphalium palustre
Gnaphalium purpureum
Gnaphalium stramineum, 1983
Goodyera oblongifolia
Gratiola neglecta
Grindelia ciliata, 1934
Grindelia squarrosa v. quasiperennis
Grindelia squarrosa v. serrulata
Grindelia squarrosa v. squarrosa
Gutierrezia dracunculoides
Gutierrezia sarothrae
Gymnocladus dioica
Gypsophila paniculata, 1895
Gypsophila scorzonerifolia, 1995
H
Hackelia deflexa v. americana
Hackelia floribunda
Hackelia virginiana
Halogeton glomeratus, 1995
Hedeoma drummondii
Hedeoma hispida
Hedeoma pulegioides
Hedera helix
Helenium autumnale
Helianthemum bicknellii
Helianthus annuus
Helianthus grosseserratus
Helianthus hirsutus
Helianthus maximiliani
Helianthus mollis
Helianthus nuttallii
Helianthus pauciflorus ssp. pauciflorus
Helianthus pauciflorus ssp. subrhomboideus
Helianthus petiolaris
Helianthus tuberosus
Heliopsis helianthoides v. occidentalis
Heliotropium curassavicum v. curassavicum
Heliotropium curassavicum v. obovatum
Hemerocallis fulva
Heracleum lanatum
Hesperis matronalis, 1887
Heteranthera limosa
Heteranthera multiflora
Heterotheca latifolia, 1988
Heterotheca stenophylla v. angustifolia
Heterotheca stenophylla v. stenophylla
Heterotheca villosa v. ballardii
Heterotheca villosa v. nana
Heterotheca villosa v. villosa
Heuchera richardsonii
Hibiscus laevis
Hibiscus trionum, 1873
Hieracium kalmii v. canadense
Hieracium longipilum
Hieracium umbellatum
Hippuris vulgaris
Holosteum umbellatum, 1971
Hordeum jubatum
Hordeum murinum, 2005
Hordeum pusillum
Hordeum vulgare
Houstonia nigricans
Houstonia purpurea v. calycosa
Houstonia pusilla
Humulus japonicus, 1959
Humulus lupulus v. lupuloides
Humulus lupulus v. neomexicana
Humulus lupulus v. pubescens
Hydrophyllum appendiculatum
Hydrophyllum virginianum
Hymenopappus filifolius v. polycephalus
Hymenopappus scabiosaeus v. corymbosus
Hymenopappus tenuifolius
Hymenoxys richardsonii
Hyoscyamus niger, 1991
Hypericum majus
Hypericum mutilum
Hypericum perforatum, 1885
Hypericum punctatum
Hypericum pyramidatum
Hypericum sphaerocarpum
Hypoxis hirsuta
I
Impatiens capensis
Impatiens pallida
Ipomoea hederacea v. hederacea, 1877
Ipomoea hederacea v. integriuscula, 2001
Ipomoea leptophylla
Ipomoea pandurata
Ipomoea purpurea
Ipomopsis congesta ssp. congesta
Ipomopsis congesta ssp. pseudotypica
Ipomopsis longiflora
Ipomopsis rubra
Ipomopsis spicata
Iris germanica group
Iris missouriensis
Iris pseudacorus, 1968
Iris versicolor
Iris virginica v. shrevei
Isoetes melanopoda
Iva annua
Iva axillaris v. axillaris
Iva axillaris v. robustior
Iva xanthiifolia
J
Juglans nigra
Juncus acuminatus
Juncus alpinoarticulatus
Juncus arcticus v. balticus
Juncus articulatus
Juncus brachyphyllus
Juncus bufonius
Juncus canadensis
Juncus compressus, 1989
Juncus dudleyi
Juncus effusus
Juncus interior
Juncus longistylis
Juncus marginatus
Juncus nodosus
Juncus scirpoides
Juncus tenuis
Juncus torreyi
Juniperus communis v. depressa
Juniperus horizontalis
Juniperus scopulorum
Juniperus virginiana
Justicia americana, 2003
K
Kochia scoparia, 1905
Koeleria macrantha
Krascheninnikovia lanata
Krigia caespitosa
Kummerowia stipulacea, 1969
L
Lactuca canadensis
Lactuca floridana
Lactuca ludoviciana
Lactuca pulchella
Lactuca saligna, 1971
Lactuca seriola v. integrata
Lactuca serriola v. serriola, 1889
Lamium amplexicaule, 1878
Lamium purpureum, 1974
Laportea canadensis
Lappula cenchrusoides
Lappula redowskii v. cupulata
Lappula redowskii v. redowskii
Lappula squarrosa
Lathyrus latifolius, 1895
Lathyrus ochroleucus
Lathyrus palustris
Lathyrus polymorphus v. incanus
Lathyrus polymorphus v. polymorphus
Lathyrus tuberosus, 1967
Lechea mucronata
Lechea stricta
Lechea tenuifolia
Leersia oryzoides
Leersia virginica
Lemna gibba
Lemna minor
Lemna minuta
Lemna perpusilla
Lemna trisulca
Lemna valdiviana
Leonurus cardiaca, 1892
Leonurus marrubiastrum, 1974
Leonurus sibiricus, 1966
Lepidium appelianum, 1927
Lepidium campestre, 1974
Lepidium chalepensis, 1940
Lepidium densiflorum
Lepidium draba, 1908
Lepidium latifolium, 1961
Lepidium oblongum
Lepidium perfoliatum, 1933
Lepidium sativum, 1893
Lepidium virginicum
Leptochloa fusca ssp. fascicularis
Leptodactylon caespitosum
Lespedeza capitata
Lespedeza cuneata, 1974
Lespedeza violacea
Leucanthemum vulgare, 1887
Leucocrinum montanum
Leucopoa kingii
Leucospora multifida
Liatris aspera
Liatris lancifolia
Liatris ligulistylis
Liatris punctata
Liatris pycnostachya
Liatris squarrosa v. glabrata
Liatris squarrosa v. hirsuta
Ligustrum obtusifolium, 1991
Ligustrum vulgare, 1983
Lilium canadense ssp. michiganense
Lilium philadelphicum
Limosella aquatica
Linaria dalmatica, 1971
Linaria vulgaris, 1883
Lindernia dubia
Linum berlandieri
Linum compactum
Linum grandiflorum
Linum perenne ssp. lewisii
Linum perenne ssp. perenne
Linum puberulum
Linum rigidum v. rigidum
Linum rigidum v. simulans
Linum sulcatum
Linum usitatissimum
Liparis loeselii
Lipocarpha aristulata
Lipocarpha drummondii
Lipocarpha micrantha
Lippia cuneifolia
Lippia lanceolata
Lithophragma parviflorum
Lithospermum arvense
Lithospermum canescens
Lithospermum caroliniense
Lithospermum incisum
Lobelia cardinalis
Lobelia inflata
Lobelia siphilitica
Lobelia spicata
Lobularia maritima
Loeflingia squarrosa var. texana, 1889
Lolium arundinaceum, 1973
Lolium perenne ssp. italicum, 1886
Lolium perenne v. perenne, 1891
Lolium pratense, 1886
Lomatium foeniculaceum v. daucifolium
Lomatium foeniculaceum v. foeniculaceum
Lomatium nuttallii
Lomatium orientale
Lonicera dioica v. glaucescens
Lonicera japonica, 1980s
Lonicera maackii, 1995
Lonicera morrowii, 1998
Lonicera tatarica, 1880s
Lonicera x bella
Lonicera x xylosteoides
Lonicera xylosteum, 1991
Lotus corniculatus, 1974
Lotus purshianus
Lotus tenuis, 1971
Ludwigia alternifolia
Ludwigia palustris
Ludwigia peploides ssp. glabrescens
Ludwigia polycarpa
Lunaria annua
Lupinus argenteus v. argenteus
Lupinus argenteus v. argophyllus
Lupinus plattensis
Lupinus pusillus
Lycium barbarum, ca 1900
Lycopus americanus
Lycopus asper
Lycopus uniflorus
Lycopus virginicus
Lygodesmia juncea
Lysimachia ciliata
Lysimachia hybrida
Lysimachia nummularia, 1996
Lysimachia punctata, 1971
Lysimachia thyrsiflora
Lythrum alatum
Lythrum salicaria, 1972
M
Machaeranthera tanacetifolia
Maclura pomifera, 1907; cult. 1870s
Maianthemum canadense v. interius
Malva neglecta, 1889
Malva parviflora, 1902
Malva pusilla, 1889
Malva sylvestris, 1894
Marrubium vulgare, 1898
Marsilea vestita
Matricaria chamomilla
Matricaria inodora, 1905
Matricaria matricarioides, 1974
Matteuccia struthiopteris v. pensylvanica
Medicago lupulina, 1873
Medicago sativa ssp. falcata
Medicago sativa ssp. sativa
Melica nitens
Melilotus albus, 1888
Melilotus officinalis, 1885
Menispermum canadense
Mentha arvensis
Mentha spicata
Mentha x gracilis
Mentha x piperita
Mentzelia albicaulis
Mentzelia decapetala
Mentzelia multiflora
Mentzelia nuda v. stricta
Mentzelia oligosperma
Menyanthes trifoliata
Mertensia lanceolata
Mertensia virginica, 1950
Microsteris gracilis v. humilior
Mimosa quadrivalvis v. nuttallii
Mimulus alatus
Mimulus glabratus jamesii
Mimulus guttatus
Mimulus ringens
Minuartia michauxii v. texana
Mirabilis albida
Mirabilis glabra
Mirabilis hirsuta
Mirabilis linearis
Mirabilis nyctaginea
Miscanthus sacchariflorus
Mollugo verticillata, 1878
Monarda citriodora
Monarda fistulosa v. menthifolia
Monarda fistulosa v. mollis
Monarda pectinata
Monarda punctata v. occidentalis, 1987
Monolepis nuttalliana
Monotropa hypopithys
Monotropa uniflora
Morus alba, 1920
Morus rubra
Muhlenbergia asperifolia
Muhlenbergia bushii
Muhlenbergia cuspidata
Muhlenbergia filiformis
Muhlenbergia frondosa
Muhlenbergia glomerata
Muhlenbergia mexicana
Muhlenbergia minutissima
Muhlenbergia pungens
Muhlenbergia racemosa
Muhlenbergia richardsonis
Muhlenbergia schreberi
Muhlenbergia sobolifera
Muhlenbergia sylvatica
Muhlenbergia tenuiflora
Munroa squarrosa
Muscari botryoides
Musineon divaricatum
Musineon tenuifolium
Myosotis laxa
Myosotis stricta, 1995
Myosotis verna
Myosoton aquaticum, 1974
Myosurus minimus
Myriophyllum pinnatum
Myriophyllum sibiricum
Myriophyllum spicatum, 1980
Myriophyllum verticillatum
N
Najas flexilis
Najas guadalupensis
Najas marina
Nasturtium microphyllum, 1991
Nasturtium officinale, 1875
Navarretia intertexta v. propinqua
Nelumbo lutea
Nepeta cataria, 1873
Nicandra physalodes
Nothocalais cuspidata
Nothoscordum bivalve
Nuphar variegata
Nuttallanthus texanus
Nymphaea odorata ssp. odorata
Nymphaea odorata ssp. tuberosa
O
Oenanthe sarmentosa, 1998
Oenothera albicaulis
Oenothera biennis v. biennis
Oenothera biennis v. canescens
Oenothera biennis v. strigosa
Oenothera caespitosa v. caespitosa
Oenothera caespitosa v. montana
Oenothera canescens
Oenothera coronopifolia
Oenothera grandis
Oenothera laciniata
Oenothera latifolia
Oenothera macrocarpa ssp. fremontii
Oenothera macrocarpa ssp. macrocarpa
Oenothera nuttallii
Oenothera perennis
Oenothera rhombipetala
Oenothera speciosa, 1915
Onoclea sensibilis
Onopordum acanthium, 1960s
Onosmodium molle v. occidentale
Oönopsis multicaulis
Ophioglossum engelmannii
Ophioglossum pusillum
Opuntia fragilis
Opuntia macrorhiza
Opuntia polyacantha
Ornithogalum umbellatum, 1951
Orobanche fasciculata
Orobanche ludoviciana
Orobanche uniflora
Orobanche riparia
Orthilia secunda
Orthocarpus luteus
Oryzopsis micrantha
Oryzopsis racemosa
Osmorhiza claytonii
Osmorhiza longistylis
Ostrya virginiana
Oxalis dillenii
Oxalis stricta
Oxalis violacea
Oxytropis lambertii
Oxytropis multiceps
Oxytropis sericea
P
Palafoxia sphacelata
Panax quinquefolius
Panicum acuminatum
Panicum capillare
Panicum depauperatum
Panicum dichotomiflorum
Panicum latifolium
Panicum leibergii
Panicum linearifolium
Panicum miliaceum
Panicum oligosanthes v. scribnerianum
Panicum ovale v. praecocius
Panicum virgatum
Panicum wilcoxianum
Papaver rhoeas, 1980s
Parietaria pensylvanica
Paronychia canadensis
Paronychia jamesii v. depressa
Paronychia jamesii v. jamesii
Paronychia sessiliflora
Parthenocissus quinquefolia
Parthenocissus tricuspidata, 1974
Parthenocissus vitacea
Paspalum setaceum v. stramineum
Pastinaca sativa, 1890
Pectis angustifolia
Pedicularis canadensis
Pedicularis crenulata
Pedicularis lanceolata
Pediomelum argophyllum
Pediomelum cuspidatum
Pediomelum digitatum
Pediomelum esculentum
Pediomelum hypogaeum
Pediomelum linearifolium
Pellaea atropurpurea
Pellaea glabella
Penstemon albidus
Penstemon ambiguus
Penstemon angustifolius v. angustifolius
Penstemon angustifolius v. caudatus
Penstemon buckleyi
Penstemon cobaea
Penstemon digitalis
Penstemon eriantherus
Penstemon glaber
Penstemon gracilis
Penstemon grandiflorus
Penstemon haydenii
Penstemon tubaeflorus
Penthorum sedoides
Perilla frutescens, 1974
Petunia x hybrida
Phacelia hastata
Phalaris arundinacea
Phalaris canariensis, 1877
Phemeranthus calycinus
Phemeranthus parviflorus
Phemeranthus rugospermus
Philadelphus coronarius
Philadelphus pubescens
Phleum pratense, 1873
Phlox alyssifolia
Phlox andicola
Phlox divaricata ssp. laphamii
Phlox hoodii
Phlox muscoides
Phlox paniculata, 1974
Phlox pilosa ssp. fulgida
Phragmites australis
Phryma leptostachya
Physalis hederifolia v. comata
Physalis heterophylla
Physalis hispida
Physalis longifolia
Physalis missouriensis
Physalis pumila
Physalis virginiana
Physaria arenosa ssp. arenosa
Physaria arenosa ssp. argillosa
Physaria brassicoides
Physaria ludoviciana
Physaria montana
Physaria ovalifolia
Physaria reediana
Physocarpus opulifolius v. intermedius
Physostegia parviflora
Physostegia virginiana ssp. praemorsa
Physostegia virginiana ssp. virginiana
Phytolacca americana
Picradeniopsis oppositifolia
Pilea fontana
Pilea pumila
Pilularia americana
Pinus flexilis
Pinus ponderosa v. scopulorum
Plagiobothrys scouleri v. penicillatus
Plantago aristata
Plantago elongata
Plantago eriopoda
Plantago lanceolata, 1887
Plantago major, 1873
Plantago patagonica v. spinulosa
Plantago patagonica v.patagonica
Plantago rhodosperma
Plantago rugelii
Plantago virginica
Platanthera aquilonis
Platanthera praeclara
Platanus occidentalis
Poa annua, 1953
Poa arida
Poa bulbosa, 1988
Poa chapmaniana
Poa compressa, 1885
Poa fendleriana
Poa glaucifolia
Poa interior
Poa juncifolia
Poa palustris, 1890
Poa pratensis
Poa secunda
Poa sylvestris
Poa trivialis
Podophyllum peltatum
Polanisia dodecandra ssp. dodecandra
Polanisia dodecandra ssp. trachysperma
Polanisia jamesii
Polemonium reptans
Polygala alba
Polygala sanguinea
Polygala senega
Polygala verticillata v. isocycla
Polygala verticillata v. sphenostachya
Polygonatum biflorum
Polygonum achoreum
Polygonum amphibium
Polygonum aviculare ssp. aviculare
Polygonum aviculare ssp. depressum
Polygonum aviculare ssp. neglectum
Polygonum bicorne
Polygonum bungeanum, 2006
Polygonum buxiforme
Polygonum cespitosum v. longisetum, 1967
Polygonum coccineum
Polygonum convolvulus, 1879
Polygonum cuspidatum
Polygonum douglasii
Polygonum erectum
Polygonum hydropiper, 1885
Polygonum hydropiperoides v. hydropiperoides
Polygonum hydropiperoides v. opelousanum
Polygonum lapathifolium
Polygonum minus, 2000
Polygonum orientale, 1898
Polygonum pensylvanicum
Polygonum persicaria, 1885
Polygonum punctatum
Polygonum ramosissimum
Polygonum sagittatum
Polygonum sawatchense ssp. sawatchense
Polygonum scandens
Polygonum tenue
Polygonum virginianum
Polypogon interruptus
Polypogon monspeliensis, 1907
Polytaenia nuttallii
Pomaria jamesii
Populus alba
Populus angustifolia
Populus deltoides v. occidentalis
Populus tremuloides
Populus x acuminata
Populus x smithii
Portulaca grandiflora
Portulaca oleracea, 1893
Portulaca pilosa
Potamogeton amplifolius
Potamogeton crispus, 1965
Potamogeton diversifolius
Potamogeton filiformis v. alpinus
Potamogeton filiformis v. occidentalis
Potamogeton foliosus
Potamogeton friesii
Potamogeton gramineus
Potamogeton illinoensis
Potamogeton natans
Potamogeton nodosus
Potamogeton pectinatus
Potamogeton praelongus
Potamogeton pusillus
Potamogeton richardsonii
Potamogeton strictifolius
Potamogeton zosteriformis
Potentilla anserina
Potentilla argentea, 1986
Potentilla bipinnatifida
Potentilla hippiana v. effusa
Potentilla indica, 1974
Potentilla norvegica
Potentilla paradoxa
Potentilla pensylvanica
Potentilla plattensis
Potentilla recta, 1926
Potentilla rivalis
Potentilla simplex
Prenanthes aspera
Prenanthes racemosa ssp. multiflora
Proboscidea louisianica
Prosartes trachycarpa
Prunella vulgaris v. lanceolata
Prunella vulgaris v. vulgaris, 1961
Prunus americana
Prunus angustifolia
Prunus cerasus, 1992
Prunus hortulana
Prunus pumila v. besseyi
Prunus serotina
Prunus tomentosa, 1998
Prunus virginiana
Psoralidium lanceolatum
Psoralidium tenuiflorum
Ptelea trifoliolata
Pterospora andromedea
Puccinellia distans, 1983
Puccinellia nuttalliana
Pueraria montana v. lobata, 1992
Purshia tridentata
Pycnanthemum tenuifolium
Pycnanthemum verticillatum v. pilosum
Pycnanthemum virginianum
Pyrola chlorantha
Pyrola elliptica
Pyrrhopappus carolinianus
Pyrrhopappus grandiflorus
Pyrus ioensis
Q
Quercus alba
Quercus macrocarpa
Quercus marilandica
Quercus muehlenbergii
Quercus palustris
Quercus rubra
Quercus velutina
Quercus x bushii
Quincula lobata
R
Ranunculus abortivus
Ranunculus cymbalaria
Ranunculus fascicularis
Ranunculus flabellaris
Ranunculus glaberrimus v. ellipticus
Ranunculus hispidus v. caricetorum
Ranunculus longirostris
Ranunculus macounii
Ranunculus pensylvanicus
Ranunculus recurvatus
Ranunculus repens, 1983
Ranunculus rhomboideus
Ranunculus sceleratus v. multifidus
Ranunculus sceleratus v. sceleratus
Ranunculus subrigidus
Ranunculus testiculatus, 1971
Raphanus sativus
Ratibida columnifera
Ratibida pinnata
Ratibida tagetes
Rayjacksonia annua
Redfieldia flexuosa
Reseda lutea, 1974
Rhamnus cathartica, 1890s
Rhamnus davurica. 1987
Rhamnus frangula, 1997
Rhamnus lanceolata v. glabrata
Rhus aromatica
Rhus copallina v. latifolia
Rhus glabra
Rhus typhina, 2003
Rhynchospora capitellata
Ribes americanum
Ribes cereum v. inebrians
Ribes hirtellum
Ribes missouriense
Ribes odoratum
Ribes oxyacanthoides
Robinia hispida, 1990
Robinia pseudoacacia
Rorippa austriaca, 1961
Rorippa curvipes v. truncata
Rorippa palustris v. fernaldiana
Rorippa palustris v. hispida
Rorippa sessiliflora
Rorippa sinuata
Rorippa sylvestris, 1991
Rorippa tenerrima
Rosa arkansana
Rosa blanda
Rosa canina, 1992
Rosa carolina
Rosa multiflora, 1974
Rosa rubiginosa
Rosa setigera v. tomentosa
Rosa woodsii
Rotala ramosior v. interior
Rubus allegheniensis
Rubus flagellaris
Rubus frondosus
Rubus laudatus
Rubus occidentalis
Rubus pubescens
Rubus rosa
Rudbeckia hirta v. pulcherrima
Rudbeckia laciniata
Rudbeckia triloba
Ruellia humilis
Ruellia strepens
Rumex acetosella, 1885
Rumex altissimus
Rumex britannica
Rumex crispus, 1889
Rumex fueginus
Rumex obtusifolius, 1892
Rumex patientia ssp. orientalis, 1890
Rumex patientia ssp. patientia, 1947
Rumex stenophyllus, 1935
Rumex triangulivalvis
Rumex venosus
Rumex verticillatus
Rumex x alexidis
Ruppia maritima
Ruppia occidentalis
S
Sagittaria brevirostra
Sagittaria calycina
Sagittaria cuneata
Sagittaria graminea
Sagittaria latifolia
Sagittaria longiloba
Sagittaria rigida
Salicornia rubra
Salix amygdaloides
Salix bebbiana
Salix eriocephala v. eriocephala
Salix eriocephala v. famelica
Salix exigua ssp. interior
Salix fragilis
Salix humilis
Salix nigra
Salix petiolaris
Salix x pendulina
Salix x rubens
Salix x sepulcralis v. chrysocoma
Salix x sepulcralis v. sepulcralis
Salsola collina, 1977
Salsola tragus, 1889
Salvia azurea v. grandiflora
Salvia nemorosa, 1968
Salvia reflexa
Sambucus canadensis
Sanguinaria canadensis
Sanguisorba minor
Sanicula canadensis
Sanicula marilandica
Sanicula odorata
Saponaria officinalis, 1890
Sarcobatus vermiculatus
Schedonnardus paniculatus
Schizachne purpurascens
Schizachyrium scoparium ssp. neomexicanum
Schizachyrium scoparium ssp. scoparium
Schoenoplectus acutus
Schoenoplectus acutus x tabernaemontani
Schoenoplectus hallii
Schoenoplectus heterochaetus
Schoenoplectus pungens
Schoenoplectus saximontanus
Schoenoplectus tabernaemontani
Scilla sibirica
Scirpus atrovirens
Scirpus cyperinus
Scirpus microcarpus
Scirpus pallidus
Scirpus pendulus
Scleranthus annuus, 1995
Scleria triglomerata
Sclerochloa dura, 1982
Scolochloa festucacea
Scorzonera laciniata
Scrophularia lanceolata
Scrophularia marilandica
Scutellaria brittonii
Scutellaria galericulata
Scutellaria lateriflora
Scutellaria parvula v. missouriensis
Scutellaria parvula v. parvula
Secale cereale
Securigera varia, 1960s
Sedum lanceolatum
Selaginella rupestris
Senecio canus v. canus
Senecio canus. v. purshianus
Senecio glabellus
Senecio integerrimus v. integerrimus
Senecio integerrimus v. scribneri
Senecio plattensis
Senecio pseudaureus v. semicordatus
Senecio riddellii
Senecio spartioides
Senecio tridenticulatus
Senecio vulgaris, 1887
Senna marilandica
Senna obtusifolia, 1990
Setaria faberi, 1940
Setaria italica, 1876
Setaria pumila, 1886
Setaria verticillata, 1884
Setaria viridis, 1873
Shepherdia argentea
Shinnersoseris rostrata
Sibara virginica, 1992
Sicyos angulatus
Sida spinosa, 1889
Sidalcea neomexicana
Sideritis montana
Silene antirrhina
Silene dichotoma, 1908
Silene drummondii
Silene latifolia, 1891
Silene menziesii
Silene noctiflora, 1885
Silene stellata v. scabrella
Silene vulgaris, 1891
Silphium integrifolium v. laeve
Silphium laciniatum
Silphium perfoliatum
Sinapis alba, 1891
Sinapis arvensis, 1927
Sisymbrium altissimum, 1898
Sisymbrium loeselii, 1910
Sisymbrium officinale, 1886
Sisyrinchium campestre
Sisyrinchium montanum
Sium suave
Smilacina racemosa
Smilacina stellata
Smilax ecirrata
Smilax hispida
Smilax lasioneura
Solanum carolinense
Solanum dulcamara, 1895
Solanum elaeagnifolium, 1994
Solanum interius
Solanum physalifolium v. nitidibaccatum, 1992
Solanum ptychanthum
Solanum rostratum
Solanum triflorum
Solidago canadensis
Solidago flexicaulis
Solidago gigantea
Solidago missouriensis
Solidago mollis
Solidago nemoralis ssp, decemflora
Solidago petiolaris
Solidago rigida
Solidago speciosa v. rigidiuscula
Solidago ulmifolia
Sonchus arvensis v. glabrescens, 1971
Sonchus asper, 1888
Sonchus oleraceus, 1908
Sophora nuttalliana
Sorghastrum nutans
Sorghum bicolor
Sorghum bicolor ssp. drummondii
Sorghum halepense
Sparganium emersum
Sparganium eurycarpum
Spartina gracilis
Spartina pectinata
Spergularia salina, 1992
Spermolepis inermis
Sphaeralcea angustifolia v. cuspidata, 1995
Sphaeralcea coccinea
Sphenopholis obtusata v. major
Sphenopholis obtusata v. obtusata
Spiranthes cernua
Spiranthes diluvialis
Spiranthes lacera
Spiranthes magnicamporum
Spiranthes romanzoffiana
Spiranthes vernalis
Spirodela polyrrhiza
Sporobolus airoides
Sporobolus compositus
Sporobolus cryptandrus
Sporobolus heterolepis
Sporobolus neglectus
Sporobolus pyramidatus
Sporobolus texanus
Sporobolus vaginiflorus
Stachys hispida
Stachys pilosa v. arenicola
Stachys pilosa v. pilosa
Stachys tenuifolia
Stanleya pinnata
Staphylea trifolia
Stellaria longifolia
Stellaria media, 1888
Stellaria pallida, 1974
Stenosiphon linifolius
Stenotus armerioides
Stephanomeria runcinata
Stipa comata
Stipa hymenoides
Stipa hymenoides x viridula
Stipa robusta
Stipa spartea
Stipa viridula
Strophostyles helvola
Strophostyles leiosperma
Suaeda calceoliformis
Suckleya suckleyana
Symphoricarpos albus
Symphoricarpos occidentalis
Symphoricarpos orbiculatus
Syringa vulgaris
T
Tamarix chinensis sens. lat. 1975
Tamarix parviflora
Tanacetum balsamita
Tanacetum vulgare
Taraxacum officinale, 1885
Tephrosia virginiana
Tetraneuris acaulis
Tetraneuris scaposa v. linearis
Teucrium canadense (intermediates)
Teucrium canadense v. canadense
Teucrium canadense v. occidentale
Thalictrum dasycarpum
Thalictrum venulosum
Thelesperma filifolium v. intermedium
Thelesperma megapotamicum
Thelypodium integrifolium
Thelypteris palustris v. pubescens
Thermopsis rhombifolia
Thlaspi arvense, 1890
Thymelaea passerina, 1950
Tilia americana
Torilis arvensis, 1992
Townsendia exscapa
Townsendia grandiflora
Townsendia hookeri
Toxicodendron radicans v. negundo
Toxicodendron radicans v. rydbergii
Tradescantia bracteata
Tradescantia occidentalis
Tradescantia ohiensis
Tragia ramosa
Tragopogon dubius, 1910
Tragopogon porrifolius, 1892
Tragopogon pratensis, 1891
Triadenum fraseri
Tribulus terrestris, 1896
Trichostema brachiatum
Tridens flavus
Trifolium campestre, 1974
Trifolium fragiferum, 1963
Trifolium hybridum, 1888
Trifolium incarnatum
Trifolium pratense, 1892
Trifolium reflexum
Trifolium repens, 1873
Triglochin maritima
Triglochin palustris
Trillium nivale
Triodanis biflora
Triodanis holzingeri
Triodanis leptocarpa
Triodanis perfoliata
Triosteum perfoliatum v. aurantiacum
Triosteum perfoliatum v. perfoliatum
Triphora trianthophora
Triplasis purpurea
Tripsacum dactyloides
Tripterocalyx micranthus
Triticum aestivum
Typha angustifolia
Typha domingensis
Typha latifolia
Typha x glauca
U
Ulmus americana
Ulmus pumila, 1890s
Ulmus rubra
Ulmus thomasii
Ulmus x notha
Urtica dioica ssp. gracilis
Utricularia macrorhiza
Utricularia minor
V
Vaccaria hispanica, 1892
Vallisneria americana
Verbascum blattaria, 1934
Verbascum thapsus, 1885
Verbena bipinnatifida
Verbena bracteata
Verbena canadensis
Verbena hastata
Verbena simplex
Verbena stricta
Verbena urticifolia
Verbesina alternifolia
Verbesina encelioides v. exauriculata
Vernonia baldwinii ssp. interior
Vernonia fasciculata ssp. corymbosa
Vernonia fasciculata ssp. fasciculata
Veronica x lackschewitzii
Veronica americana
Veronica anagallis-aquatica, 1934
Veronica arvensis, 1974
Veronica biloba, 1989
Veronica catenata
Veronica hederifolia, 1970
Veronica peregrina v. peregrina
Veronica peregrina v. xalapensis
Veronica persica, 1878
Veronica polita, 1966
Veronicastrum virginicum
Viburnum lentago
Viburnum opulus
Vicia americana v. americana
Vicia americana v. minor
Vicia villosa v. glabrescens
Vicia villosa v. villosa
Vinca minor
Viola adunca
Viola arvensis, 1909
Viola bicolor
Viola canadensis v. rugulosa
Viola lanceolata
Viola missouriensis
Viola nephrophylla
Viola nuttallii
Viola odorata, 1988
Viola palmata
Viola pedata
Viola pedatifida
Viola pedatifida x sororia
Viola pubescens v. eriocarpa
Viola sororia
Viola striata, 1974
Viola tricolor, 1915
Viola vallicola
Vitis aestivalis
Vitis cinerea
Vitis riparia
Vitis vulpina
Vulpia octoflora
W
Wolffia borealis
Wolffia brasiliensis
Wolffia columbiana
Woodsia obtusa
Woodsia oregana ssp. cathcartiana
X
Xanthisma grindelioides
Xanthisma spinulosum v. glaberrimum
Xanthisma spinulosum v. spinulosum
Xanthium spinosum, 1934
Xanthium strumarium v. canadense
Xyris torta
Y
Yucca filamentosa
Yucca glauca
Z
Zannichellia palustris
Zanthoxylum americanum
Zea mays
Zigadenus elegans
Zigadenus venenosus v. gramineus
Zizania palustris v. interior
Zizia aurea
Zosterella dubia
List by Common Name
A
Adam's-needle
agalinis, gerardia
agrimony
alfalfa
alfalfa; 1887
aliciella
alkali blite
alkali bulrush
alkali cordgrass
alkali grass
alkali grass; 1983
alkali milk-vetch
alkali plantain
alkali sacaton
Allegheny monkey-flower
alpine bladder-pod
Alsike clover; 1888
alyssum; 1955
alyssum; 1995
American bellflower
American black currant
American bugseed
American dragon's-head
American elm
American false-pennyroyal
American figwort
American hazelnut
American hop
American lotus, chinkapin
American plantain
American plum, sloe
American slough-grass
American speedwell
American sweet-flag
American vetch, peavine
American water-horehound
Amur honeysuckle; 1995
Amur maple
Amur silver-grass
angel's trumpet, downy thorn-apple
annual bluegrass; 1953
annual bursage
annual fleabane, eastern fleabane
annual knawel; 1995
annual spike-rush
annual spike-rush, blunt spike-rush
annual wheatgrass; 1995
annual wild-buckwheat
antelope horn
Arkansas rose, dwarf prairie rose
aromatic aster
arrow-feather three-awn
arrow-grass
arrowhead
arrow-leaf aster
asparagus
Australian bluestem, Caucasian bluestem
autumn-olive, cardinal-shrub; 1986
azure aster
B
baby's breath; 1895
bachelor's-button, cornflower; 1892
ballhead
Baltic rush
barnyard grass
barnyard grass; 1891
Barr orophaca
basswood, American linden
bastard toadflax
bastard toadflax
beakgrain
bearberry, kinnikinnick
bearded iris
bearded sprangle-top
Bebb willow, long-beaked willow
bedstraw
beggar-ticks
bent spike-rush
Bermuda-grass
biennial wormwood
big bluestem
big cancer-root
big marsh-elder, false ragweed
big sagebrush
big sandreed
bighead townsendia
bigroot morning-glory
bigroot prickly-pear
bilobed speedwell, 1989
bindweed heliotrope
bird's-eye speedwell, 1878
bird's-foot trefoil; 1974
bird's-foot violet
bitter cress
bitter dock; 1892
bitterbrush
bitternut hickory
bittersweet
black cherry
black horehound; 1983
black locust
black medick; 1873
black mustard; 1875
black nightshade
black oak
black raspberry, blackcap
black snakeroot
black walnut
black willow
blackberry-lily, leopard-lily; 1907
black-bindweed; 1879
black-eyed susan
blackjack oak
black-seed ricegrass
bladder campion, 1891
bladder fern
bladdernut
bladder-pod
bland sweet cicely
blanket flower
blood polygala
bloodroot
blowout grass
blowout grass, sand muhly
blowout penstemon
blue flax
blue grama
blue larkspur, little larkspur
blue lettuce
blue mustard; 1914
blue phlox
blue sage, Pitcher's sage
blue scorpion-grass; 1995
blue skullcap, mad-dog skullcap
blue waxweed
bluebells
bluebunch wheatgrass
blue-cohosh
blue-eyed Mary
blue-eyed-grass
blue-flag
bluejoint reedgrass
bluets
blueweed; 1888
bluntleaf bedstraw
bluntleaf milkweed
Bodin milk-vetch
bog aster, rush aster
bog yellow cress
bog-bean
boltonia, swamp-aster
boneset
Boston-ivy; 1974
bottle gentian, closed gentian
bottlebrush grass
bouncing-bet, soapwort; 1890
boxelder
Brazilian watermeal
breadroot scurf-pea, Indian breadroot, prairie turnip
bristly crowfoot
bristly foxtail; 1884
Britton's skullcap
broadleaf cattail
broadleaf milkweed
brook flatsedge
brookgrass
broom-corn millet, proso millet
broomweed
brown-eyed susan
buck bean, golden pea, golden banner, false lupine
buckhorn
Buckley's penstemon
buckthorn
buckwheat
buffalo clover
buffalo gourd
buffalo grass
buffalo-bur
bulbous bluegrass; 1988
bulbous water-hemlock
bull thistle; 1890
bur oak
bur ragweed
bur-cucumber
burdock; 1885
burhead
bur-marigold
burnet
bur-reed
bush morning-glory
bushy cinquefoil
bushy flax
bushy knotweed
bushy wallflower; 1897
butter-and-eggs, 1883
butter-daisy
butterfly milkweed, pleurisy root
butterwort
buttonbush
buttonweed
C
California amaranth
California brome
California-poppy
camphor-weed, 1988
Canada bluegrass; 1885
Canada brome
Canada goldenrod
Canada hawkweed
Canada milk-vetch
Canada sanicle
Canada thistle; 1886
Canada tick-clover
Canada wild-rye
Canadian rush
canary grass; 1877
Canby's bluegrass
candle anemone
cardinal-flower
Carolina anemone
Carolina crane's-bill
Carolina false-dandelion
Carolina foxtail
Carolina lovegrass, spreading lovegrass
Carolina rose, swamp rose
carpet-weed; 1878
carrion-flower
catnip giant-hyssop
catnip; 1873
celandine
chaffweed
Chapman's bluegrass
charlock; 1927
cheat; 1889
Chickasaw plum
chickpea milk-vetch;1977
chickweed
chicory; 1880
Chinese bush-clover, sericea lespedeza; 1974
Chinese foxtail, Chinese bristle-grass; 1940
chive
chokecherry
cinquefoil
city goosefoot; 1889
clammy ground-cherry
clasping-leaf pepper-grass; 1933
clasping-leaf pondweed
clearweed
cleavers
climbing false-buckwheat; fallopia
climbing nightshade, bittersweet nightshade; 1895
climbing prairie rose
cluster snakeroot
clustered cancer-root
cobaea penstemon
cocklebur
collomia
Colorado butterfly-plant
Columbian watermeal
columbine, honeysuckle
comb-leaf evening-primrose
common agalinis, gerardia
common chickweed; 1888
common evening-primrose
common fumitory; 1980s
common ground-cherry
common lousewort
common mallow; 1889
common milkweed
common monkey-flower
common morning-glory
common mullein, 1885
common plantain; 1873
common ragweed
common reed
common scouring-rush
common sow-thistle; 1908
common St. John's-wort; 1885
common sunflower
common threesquare
common verbena
common water-hemlock
common witchgrass
compass plant
coontail, hornwort
coralberry, buckbrush
corn gronwell
corn poppy, Flanders-fields poppy
corn speedwell, field speedwell, 1974
corn, maize
corn-chamomile; 1914
corn-cockle; 1909
costmary
cotton-batting; 1983
cow-cockle; 1892
cow-parsnip
crack willow
crack willow, hybrid white willow; 1875
creeping buttercup; 1983
creeping foxtail; 1989
creeping juniper
creeping lovegrass
creeping smartweed, bristly lady's-thumb; 1967
creeping yellow cress; 1991
crested wheatgrass; 1961
crested woodfern
crested-tongue penstemon
crimson clover
crown vetch; 1960s
cryptantha
cultivated barley
cultivated oats; 1886
Culver's root
cup-plant
curly dock, sour dock; 1889
curly pondweed; 1965
curly-cup gumweed
cursed crowfoot
cutleaf evening-primrose
cutleaf nightshade
cutleaf teasel; 1972
cutleaf-coneflower, golden-glow
cutleaf-cucumber
cypress spurge; 1878
D
Dahurian buckthorn; 1987
daisy fleabane, rough fleabane
Dalmatian toadflax; 1971
dame's rocket; 1887
dandelion hawk's-beard
dandelion; 1885
dark-green bulrush
dayflower; 1914
daylily
death camas
Deptford pink; 1935
desert centaury
desert goosefoot
desert sandwort
dewberry
diamond willow
diffuse knapweed; 1990
dill, dillweed
ditch stonecrop
dodder
dodder; 1903
dog mustard
dog rose; 1992
dog-parsley
dooryard violet, downy blue violet, sister violet
dotted loosestrife; 1971
double bladder-pod
Douglas's slender knotweed
downy agrimony
downy brome, cheat grass; 1897
downy gentian
downy goldenrod
downy ground-cherry
downy hawthorn
draba milk-vetch
dragonroot, green-dragon
Drummond false-pennyroyal
Drummond milk-vetch
Drummond's blue aster
Drummond's wild onion
duckweed
Dudley's rush
Dutchman's breeches
dwarf ground-cherry
dwarf Indian paintbrush
dwarf juniper
dwarf larkspur, delphinium
dwarf locoweed, Nuttall's oxytrope
dwarf milkweed, plains milkweed
dwarf swamp blackberry
dwarf wild indigo
dwarf-dandelion
E
early blue-top fleabane
early ladies'-tresses orchid
early meadow-rue
early scorpion-grass
early wood buttercup, kidney-leaf buttercup
eastern cleomella, stinkweed
eastern figwort
eastern gama-grass
eastern red-cedar
eastern toothed spurge
eastern virgin's-bower
ebony spleenwort
eel-grass, tape-grass
eglantine, sweetbriar
elderberry
elm-leaf goldenrod
elodea, waterweed
enchanter's-nightshade
Engelmann's adder's-tongue fern
Engelmann's milkweed
English ivy
English plantain; 1887
English violet, sweet violet; 1988
Eurasian sweet-flag; 1974
Eurasian water-milfoil; 1980
European alder-buckthorn, 1997
European barberry; 1880s
European fly honeysuckle; 1991
European mock-orange
European privet; 1983
European spindle-tree
eyebane
F
fall panicum
fall witchgrass
false bog-rush
false boneset
false buffalo-grass
false garlic
false golden ragwort
false gromwell, marble-seed
false indigo
false melic
false nutsedge, umbrella sedge
false pennyroyal
false salsify, cutleaf viper-grass
false skeletonweed
false Solomon's-seal
false strawberry, India strawberry; 1974
false sunflower
false-dandelion
false-dandelion, prairie-dandelion
false-mallow
false-nettle
false-pimpernel
feather-geranium, Jerusalen-oak; 1891
Fendler's aster
Fendler's spurge
fennel; 1892
fernleaf verbena, glandularia
fetid-marigold
few-flowered wild-buckwheat
fiddleneck; 1906
fiddleneck; 1914
field bindweed; 1889
field chickweed
field cress; 1961
field hedge-parsley; 1992
field horsetail
field milk-vetch
field mint
field pansy, 1909
field pepper-grass; 1974
field sagewort, Great Plains wormwood
field snake-cotton
field thistle
field-garlic; 1960s
finger tickseed
fireberry hawthorn, yellow hawthorn
fire-on-the-mountain, wild poinsettia
fireweed
fireweed, burnweed
flatsedge
flatsedge; 1968
flatstem pondweed
flax, linseed
fleabane
fleabane
floating primrose-willow, neverwet
floating-leaf pondweed
Flodman's thistle
flowering spurge
flowering-rush; 1999
flower-of-an-hour; 1873
fluffweed;1995
forest muhly
forked catchfly; 1908
forked chickweed
forktip three-awn
fourpoint evening-primrose, sandhills evening-primrose
four-wing saltbush, wingscale
fowl bluegrass; 1890
fowl mannagrass
fox grape
foxtail barley
foxtail millet; 1876
fragile fern
fragrant cudweed, everlasting
fragrant onion
fragrant sumac, skunkbrush
Fremont's clematis, Fremont's leatherleaf
Fremont's evening-primrose
Fremont's goosefoot
fringed brome
fringed loosestrife
fringed puccoon
fringed sage, prairie sagewort
fringed willowherb
frostweed
G
garden cress; 1893
garden orache, mountain-spinach; 1890s
garden rocket, rocket salad, arugula, rugala; 1910
garlic
garlic chive
garlic mustard; 1975
gayfeather, blazing-star
germander, wood-sage
Geyer's spurge
giant chickweed; 1974
giant ragweed
giant Solomon's-seal
giant spider flower
gilia penstemon
ginseng
globe-headed hoary cress; 1927
goatgrass; 1966
goat's-beard, western salsify; 1910
goat's-rue
goat's-rue; 1935
golden corydalis
golden corydalis
golden currant, buffalo currant, clove currant
golden dalea
golden dock
golden-alexanders
golden-aster
goldentop
goldenweed
goldenweed; 1934
gold-of-pleasure; 1889
gooseberry
goosegrass; 1907
Gordon's wild-buckwheat
grain amaranth, Prince's plume
grain amaranth; 1907
grape-hyacinth
grass-leaf rush
grasslike water-plantain
gray cutleaf ironplant
gray goldenrod
gray oxalis, gray wood-sorrel
gray ragwort
grayhead coneflower
greasewood
Great Basin wild-rye
great blue lobelia
great bulrush, slender bulrush
great globe-thistle, 1960s
Great Plains ladies'-tresses orchid
great St. John's-wort
great water-dock
greater bladderwort
greater duckweed, duckmeat
Grecian foxglove; 1991
green ash
green cutleaf ironplant
green foxtail, green bristle-grass; 1873
green milkweed
green needle-grass
green rabbit-brush
greenbriar, prickly catbriar
greenthread
grooved flax
ground-ivy, gill-over-the-ground; 1889
ground-nut
ground-plum
groundsel
groundsel; 1887
gumbo-lily
H
hackberry
hair bugseed
hair-grass
hair-grass, Wolf's spike-sedge
hairy aster
hairy chess, Japanese brome;1900
hairy crabgrass; 1884
hairy four-o'clock
hairy golden-aster
hairy grama
hairy hawkweed, longbeard hawkweed
hairy mountain-mint
hairy prickly-poppy; 1975
hairy sunflower
hairy vetch, winter vetch
hairy wild-rye
halberd-leaf rose mallow
Hall's bulrush
Hall's Japanese honeysuckle; 1980s
halogeton; 1995
hard fescue, hard sheep-fescue
hardgrass; 1982
hardstem bulrush
harebell, bluebell, bells-of-Scotland
hare's-ear mustard; 1908
hare's-foot dalea
hawk's-beard
heart-podded hoary cress; 1908
heath aster
heather-aster
hedge bindweed
hedge mustard; 1886
hedgehog cactus
hedge-hyssop
hedge-nettle
hemlock-parsley; 1905
hemp dogbane, Indian-hemp
hemp-nettle;1952
henbane, 1991
henbit; 1878
high mallow; 1894
highbush blackberry
highbush-cranberry
hispid hedge-nettle
hoary fleabane
hoary mock-orange
hoary puccoon
hoary tick-clover
hoary verbena
hoary vetchling
hoary-alyssum; 1909
hoary-aster, viscid aster
hog peanut
hollyhock
Holzinger's Venus's-looking-glass
honesty, money-plant
honewort, white-chervil
honey locust
honeyvine, climbing milkweed
hooded ladies'-tresses orchid
Hood's phlox
Hooker's townsendia, Easter daisy
hookspur violet
horehound; 1898
horehound-motherwort; 1974
horned pondweed
hornhead; 1971
horse-gentian
horsemint, dotted bee-balm; 1987
horse-nettle
horse-radish; 1958
horseweed, mare's-tail
hound's-tongue; 1878
hybrid bulrush
hybrid dogbane
hybrid of red and Siberian elms
hymenoxys
I
Illinois bundle-flower
Illinois pondweed
Illinois tick-clover
Indian grass
Indian mustard; 1890
Indian pipe
Indian ricegrass
Indian-plantain
Indian-tobacco
inland bluegrass
inland rush, interior rush
intermediate wheatgrass; 1968
Iowa crabapple, prairie crabapple
ironweed
ironwood, hop-hornbeam
ivyleaf ground-cherry
ivyleaf morning-glory; 1877
ivyleaf morning-glory; 2001
ivy-leaf speedwell, 1970
J
Jack-in-the-pulpit
Jacob's ladder
jagged chickweed; 1971
James's clammy-weed
Japanese barberry
Japanese hop; 1959
Japanese privet; 1991
Japanese-bamboo, Japanese knotweed
Jerusalem-artichoke
Jimson weed, 1872
Johnson grass; cult. 1888
jointleaf rush, jointed rush
juneberry
Junegrass
K
Kenilworth ivy
Kentucky bluegrass
Kentucky coffee-tree
kiss-me-over-the-garden-gate, ladyfingers
kitten-tails
knotted rush
knotweed
knotweed, knot-grass, wireweed
kochia, summer-cypress; 1905
Korean lespedeza; 1969
kudzu; 1992, now extirpated
L
lacegrass
lady fern
lamb's-quarters, white goosefoot
lamp rush, soft rush
lance-leaf buckthorn
lanceleaf cottonwood
lance-leaf tickseed
lance-leaf violet
large beardtongue
large-flower tick-clover
large-leaf pondweed
larger Canadian St. John's-wort
large-spike prairie-clover
larkspur, delphinium
late boneset
late coral-root orchid
late goldenrod
lavender giant-hyssop, anise giant-hyssop
lavender-leaf evening-primrose
lead plant
leafy pondweed
leafy spurge; 1929
leafy spurge; 1980
least moonwort
leather-flower
Leiberg's panicum
lemon bee-balm
lemon scurf-pea, lance-leaf scurf-pea
lemon-weed
lens-podded hoary cress; 1940
leopard-lily, chocolate-lily
lesser bladderwort
lesser chickweed; 1974
lesser knapweed; 1992
lesser toadflax
leucospora
lilac
lily-of-the-valley
limber pine
limestone ruellia
linanthus
little barley
little bluestem
little breadroot scurf-pea
little cudweed
little forget-me-not
little lovegrass; 1969
little prickly-pear
little skullcap
little sundrops
little-seed ricegrass
long-bract rein orchid
long-leaf stitchwort
long-leaf tick-clover
longstyle rush
long-styled sweet cicely
lopseed
lotus milk-vetch
Louisiana sage, white sage, wormwood
low hop clover; 1974
low horseweed, spreading fleabane
lowland violet
M
Mackay's brittle fern
Macoun's bindweed
Macoun's buttercup
madwort; 1961
maidenhair fern
many-fruited seedbox
maple-leaf goosefoot
mare's-tail
marigold prairie coneflower
marijuana, hemp; 1877
marsh bellflower
marsh fern
marsh fleabane
marsh foxtail
marsh muhly
marsh seedbox, water-purslane
marsh skullcap
marsh St. John's-wort
marsh vetchling
marsh-elder
marsh-mallow, white-mallow
marsh-marigold
mat grama; 1992
matrimony vine, about 1900
Maximilian's sunflower
May-apple
mayweed, fetid chamomile; 1877
McGregor's wild-rye
meadow anemone
meadow brome (expected to escape)
meadow foxtail; 1968
meadow lousewort
meadow sage; 1968
meadow salsify; 1891
meadow willow
meadow-fescue; 1886
Mediterranean lovegrass; 1983
Mexican evening-primrose; 1915
microsteris
midwestern agalinis, gerardia
mignonette; 1974
mild water-pepper
Missouri evening-primrose
Missouri gooseberry
Missouri goosefoot
Missouri milk-vetch
Missouri pincushion cactus
Missouri spurge
moneywort; 1996
moonseed vine
Morrow's honeysuckle; 1998
mosquito fern, azolla
moss phlox
moss-rose, rose-moss
moth mullein, 1934
motherwort, lion's tail; 1892
mountain birch, water birch
mountain ironwort
mountain spring-parsley
mountain-mahogany
mouse-ear chickweed; 1890
mouse-ear cress, thale cress
mouse-tail
mud-plantain
mulberry, white mulberry; 1920s (cult. ca. 1900)
mullein-foxglove
multiflora rose, white rambler; 1974, but cultivated 1909
musk-thistle, plumeless-thistle; 1932
mutton-grass
N
naiad
nailwort
naked cancer-root, one-flowered cancer-root
Nanking cherry, bush cherry; 1998
nannyberry
nap-at-noon; 1951
narrow leaf four-o'clock
narrowleaf beardtongue
narrowleaf bluets
narrow-leaf butterweed
narrowleaf cattail
narrowleaf cottonwood
narrow-leaf dock, 1935
narrowleaf false-mallow; 1995
narrow-leaf golden-aster
narrow-leaf hawk's-beard; 1891
narrowleaf hawkweed
narrow-leaf milkweed
narrow-leaf musineon
narrow-leaf pinweed
narrow-leaf purple coneflower
narrow-leaf trefoil, 1971
narrow-leaf verbena
narrow-leaf willowherb
navarretia
needle-and-thread
needle-pod rush, scirpus-like rush
New England aster
New Jersey tea
nicandra, apple-of-Peru
night-flowering catchfly, sticky cockle; 1885
nimblewill
nine-anther dalea
ninebark
nodding brome
nodding chickweed
nodding fescue
nodding ladies'-tresses orchid
nodding onion
nodding wild-buckwheat
northern adder's-tongue fern
northern bedstraw
northern bog violet
northern catalpa, cigar tree
northern fogfruit
northern gooseberry
northern green orchid
northern green rush, alpine rush
northern mannagrass
northern mudwort
northern reedgrass
northern water-horehound
northern watermeal
Norway maple
Norwegian cinquefoil
noseburn
notchbract waterleaf
nut-rush, whip-grass
Nuttall's evolvulus
Nuttall's kentrophyta
Nuttall's sunflower
Nuttall's violet, yellow prairie violet
O
oak-leaf goosefoot
oak-leaf goosefoot; 1897
oatgrass
obedient plant, Virginia lion's-heart
obedient plant, Virginia lion's-heart; 1974
oldfield cinquefoil
oldfield three-awn
oldfield toadflax,Texas toadflax
old-plainsman
one-way brome; 1909
onion
orange flax
orchard-grass;1885
Oregon woodsia
Oregon-grape, grape-holly, holly-grape
Osage-orange, hedge-apple, hedge; 1907 (cult. 1886)
ostrich fern
oval-leaf bladder pod
owl-clover
oxeye daisy, white daisy; 1887
P
pagoda dogwood, alternate-leaved dogwood
painted milk-vetch
palafoxia
pale alyssum; 1890
pale amaranth, tumbleweed
pale dock, tall dock
pale dogwood
pale evening-primrose
pale evening-primrose, prairie evening-primrose
pale gentian
pale jewel-weed, pale touch-me-not
pale purple coneflower
pale smartweed, nodding smartweed, willow-weed
pale violet, creamy violet; 1974
palespike lobelia
Palmer's pigweed
palm-leaf scurf-pea
panicled tick-clover
panicled willowherb
paper birch
Parry's rabbit-brush
partridge pea
paspalum
pasque flower
patience dock, patience, 1890
patience dock, patience, 1947
pawpaw
peach-leaf willow
pearly everlasting
pellitory
Pennsylvania smartweed
pennycress; 1890
pepper-grass
peppermint
perennial dayflower
perennial ryegrass, Italian ryegrass; 1886
perennial ryegrass, Italian ryegrass; 1891
perennial sow-thistle, milk-thistle; 1971
perennial sweetpea; 1895
perilla, perilla mint; 1974
perplexing tick-clover
persimmon, 1979
petunia
pie cherry, sour cherry; 1992
pigeon grape
pillwort
pin oak
pincushion, dusty-maiden
pineapple weed; 1974
pine-drops
pine-sap
pingue rubberweed
pink poppy-mallow
pink smartweed
pinweed
Pitcher's clematis, Pitcher's leather-flower
plains bee-balm
plains black nightshade
plains bluegrass
plains coreopsis, calliopsis
plains cottonwood
plains evening-primrose, yellow sundrops
plains flax
plains muhly
plains musineon
plains orophaca
plains phlox
plains prickly-pear
plains puccoon
plains spring-parsley
plains sunflower, Sandhills sunflower
plains wild-indigo
Platte lupine
Platte River milk-vetch
Platte thistle
pleated slender knotweed
pliant milk-vetch
poison ivy
poison-hemlock, Nebraska-fern; 1936
pokeweed
ponderosa pine
pondweed
popcorn-flower
porcupine grass
poverty grass
poverty weed
povery rush, path rush
powdery cloakfern
prairie alumroot
prairie coneflower
prairie cordgrass
prairie cupgrass
prairie cupgrass; 1989
prairie dropseed
prairie fame-flower
prairie gentian, Russell's gentian, lisianthus
prairie goldenrod, Missouri goldenrod
prairie larkspur, delphinium
prairie lespedeza
prairie mimosa
prairie moonwort
prairie onion
prairie phlox
prairie ragwort
prairie sandreed
prairie trefoil
prairie trout-lily, prairie dogtooth-violet
prairie violet
prairie willow
prairie-parsley
prairie-petunia
prairie-star
pretty blue lettuce
prickly lettuce
prickly lettuce; 1889
prickly naiad, sawtooth naiad
prickly sida; 1889
prickly smartweed
prickly sow-thistle; 1888
prickly-ash
prickly-poppy
prince's-plume
prostrate pigweed
prostrate verbena
pulse milk-vetch
puncture-vine; 1896
purple cliffbrake
purple coneflower
purple cudweed
purple giant-hyssop
purple locoweed
purple loosestrife; 1972
purple lovegrass
purple meadow-rue
purple milkweed
purple pincushion cactus
purple poppy-mallow, claret cups
purple prairie-clover
purple sandgrass
purple spike-rush
purple-leaf willowherb
purslane speedwell
purslane, pussley, rubber plant; 1893
pussytoes, ladies'-tobacco
Q
quackgrass; 1905
quaking aspen
Queen Anne's lace, wild carrot; 1894
quickweed, galinsoga; 1927
quickweed, galinsoga; 1942
quillwort
R
rabbit-brush, chrysothamnus
rabbit-foot grass; 1907
rabbit-tobacco
raccon-grape, blue-bead
radish
ramps, wild leek
rattlebox, bushy seedbox
rattlebox; 1873
rattlesnake chess; 1911
rattlesnake fern, Virginia grape-fern
rattlesnake-master
rattlesnake-plantain orchid
rattlesnake-root
rayless aster
red baneberry
red clover; 1892
red dead-nettle; 1974
red elm
red false-mallow, cowboy's delight
red fescue
red flax
red lovegrass
red mint, Scotch mint
red mulberry
red oak
red orache; 1912
red sorrel, sheep sorrel; 1885
red three-awn
redbud
red-osier dogwood, red-willow
redroot flatsedge
redroot pigweed, rough pigweed
red-seed plantain
red-stem spike-rush
redtop
redtop, 1886
red-whisker clammy-weed
reed canary grass
ribscale
rice cutgrass
Riddell's groundsel
rillscale
river bulrush
river grape
rock cress
rock elm
rock muhly
rock sandwort
rocket larkspur
rockpink fame-flower
Rocky Mountain bee-plant
Rocky Mountain bulrush
Rocky Mountain fescue, shortleaf f., sheep's f.
Rocky Mountain juniper
Rocky Mountain maple
Rocky Mountain sage
rose verbena
rose-acacia; 1990
rosinweed
rough agalinis, gerardia
rough avens
rough bluegrass
rough dropseed
rough false-pennyroyal
rough-leaf dogwood
round-fruit rush; 1989
round-head lespedeza
round-head prairie-clover
roundleaf monkey-flower
round-leaf spurge
round-podded St. John's-wort
rover bellflower
rush-pea
Russian atriplex; 1970
Russian knapweed; 1931
Russian wild-rye; 1973
Russian-olive
Russian-thistle, tumbleweed; 1889
rusty flatsedge
rye
S
safflower, saffron-thistle
sago pondweed
salsify; 1892
salt-cedar, tamarisk, 1975
saltgrass
salt-marsh aster
saltmarsh bulrush
saltmarsh knotweed
saltmarsh sand-spurrey; 1992
saltwort, glasswort
sand bluestem
sand cherry
sand dropseed
sand fame-flower
sand lovegrass
sand milkweed
sandbar cancer-root
sandbar willow
sandbur
sandhill goosefoot
sandhills ground-cherry
sandhills pigweed
sand-lily, stickleaf
sandpuffs
sandsage
sandwort
sawtooth sunflower
scarlet gaura, scarlet butterfly-weed
scarlet pimpernel; 1898
scarlet smartweed
scarlet gilia, standing-cypress
scented chamomile
scentless chamomile; 1905
Schweinitz's flatsedge
scorpion-weed
Scotch-thistle, cotton-thistle; 1960s
scouring-rush
scratchgrass
Scribner's panicum
sea blite
sea-milkwort
seaside heliotrope
secund bladder-pod
sedge
sedge; 1989
sedge; 1991
sego-lily
self-heal, heal-all, all-heal
self-heal, heal-all, all-heal; 1961
Seneca snakeroot
sensitive fern
serviceberry
sessile-leaf tick-clover
shagbark hickory
shaggy fleabane
shaggy purslane, kiss-me-quick
sharpwing monkey-flower
shattercane
sheep-bur, stickseed
shepherd's-purse; 1884
shining bedstraw
shining sumac
shinleaf
shooting-star
shore buttercup
short-awn foxtail
shortleaf rush
Short's milk-vetch
short-spur corydalis
short-stem wild-buckwheat
showy centaury; 1981
showy chloris; 1972
showy golden-aster
showy ipomopsis, gilia
showy milkweed
showy orchis
showy-wand goldnerod
Siberian elm, 1890s
Siberian motherwort; 1966
Siberian pea-shrub
sicklepod
sickleweed; 1946
sideoats grama
silky aster
silky orphaca
silky prairie-clover
silky sophora, white loco
silky wormwood, tarragon
silver bluestem
silver buffalo-berry
silver cinquefoil; 1986
silver maple, soft maple
silver poplar
silverleaf nightshade, white horse-nettle; 1994
silver-leaf scurf-pea
silversage
silverscale saltbush, silver orache
silverweed
silvery lupine
six-angle spurge
sixweeks fescue
skeleton-leaf bursage
skeleton-weed
sleepy catchfly
slender beardtongue
slender corydalis
slender cotton-grass
slender hawk's-beard
slender ladies'-tresses orchid
slender lipfern
slender milk-vetch
slender muhly
slender pigweed
slender plantain
slender pondweed
slender Russian-thistle, tumbleweed; 1977
slender smartweed; 2000
slender snake-cotton
slender St. John's-wort
slender wheatgrass
slender-flower scurf-pea, wild-alfalfa
slender-fruited Venus's-looking-glass
slender-leaf mountain-mint
slick-seed wild bean
slimleaf panicum
slimleaf scurf-pea
slimspike three-awn
small bedstraw
small bluets
small lupine
small pondweed
small spike-rush
small white lady's-slipper orchid
small-flower mallow; 1902
smallflower wallflower
small-flowered gaura
smallhead plumeless-thistle; 1930
small-seeded false flax
smartweed; 1885
smooth agalinis, gerardia
smooth beardtongue
smooth blue aster
smooth brome; 1902
smooth cliffbrake
smooth crabgrass; 1898
smooth four-o'clock
smooth goosefoot
smooth hedge-nettle
smooth rose
smooth scouring-rush
smooth sumac
smooth yellow violet
snakeweed, broom snakeweed
sneezeweed
snow trillium
snowberry
snow-on-the-mountain
soft chess, bald brome; 1892
softstem bulrush
soft goldenrod
sorghum, milo
southern bladder fern
southern blue-flag
southern catalpa
southern chervil
southern crabgrass; 1967
soybean
Spanish needles
spearmint
spearscale; 1934
speedwell, 1966
spider milkweed, antelope horn
spiderwort
spike gilia
spikebent
spike-fescue
spike-moss
spikenard
spike-rush
spinulose woodfern
spiny cocklebur; 1934
spiny pigweed; 1881
spirng coral-root orchid
spotted coral-root orchid
spotted evening-primrose
spotted jewel-weed, spotted touch-me-not
spotted Joe Pye weed
spotted knapweed; 1917
spotted spurge
spotted St. John's-wort
sprangle-top
spreading chervil
spreading dogbane
spreading wild-buckwheat
spreading yellow cress
spring avens
spring cress
spring-beauty
spurge-flax, 1950
squill
squirrel-tail
staghorn sumac; 2003
standing milk-vetch
Standley's goosefoot
star duckweed
star-flowered false Solomon's-seal
star-lily
starry campion
stemless townsendia, Easter daisy
stenosiphon
stickleaf
stickseed
sticky crane's-bill
stiff flax
stiff goldenrod
stiff sunflower
stinging nettle
stinging wood-nettle
stinkgrass; 1874
stinking lamb's-quarters, pitseed goosefoot
stonecrop
stork's-bill, 1914
strawberry blite; 1891
strawberry clover; 1963
suckleya
sulfur cinquefoil; 1926
Sullivant's milkweed
summer grape
summer orophaca
summer phlox; 1974
swamp lousewort
swamp milkweed
sweet alyssum
sweet autumn clematis
sweet Joe Pye weed
sweet sagewort;1990
sweet sand-verbena
sweet William; 1978
sweet-scented bedstraw
switchgrass
sycamore
T
tall boneset
tall fescue; 1973
tall gaura, large-flowered gaura
tall hedge mustard; 1910
tall mannagrass
tall thistle
tall wheatgrass; 1961
tall white aster, panicled aster
tall white penstemon
tall white violet
tall-bread scurf-pea
tansy
tansy mustard
tansy mustard; 1897
tansy-aster, Tahoka daisy
Tatarian honeysuckle; cult. 1880s
teal lovegrass
tear-thumb
teasel; 1974
ten-petal stickleaf
Texas croton
Texas dropseed
thimbleweed, tall anemone
thin-scale cotton-grass
threadleaf sedge, blackroot
thread-leaf woolly-white
three-birds orchid
three-flower melic
three-seeded mercury
three-seeded mercury, copperleaf
three-way sedge
thyme-leaf sandwort; 1885
thyme-leaf spurge
ticklegrass
tickseed-sunflower
timothy; 1873
tine-leaf milk-vetch
toad rush
toothcup
toothwort
Torrey's rush
tower mustard
trailing fleabane, whiplash fleabane
tree-of-heaven, 1911
trout lily, dogtooth-violet, fawn lily
trumpet-creeper
tube penstemon
tuberous false-dandelion
tuberous vetchling; 1967
tufted loosestrife
tumble grass
tumbling mustard, Jim Hill mustard; 1898
Turkestan bluestem, King Ranch bluestem
Turk's-cap lily
twayblade orchid
two-flowered Venus's-looking-glass
two-grooved milk-vetch
U
umbellate-aster, flat-top aster
umbrella-grass
unicorn-plant, devil's-claw
Ute ladies'-tresses orchid
V
variable pondweed
velvet-leaf, buttonweed, China jute, Indian mallow; 1886
Venus's-looking-glass
vinca, periwinkle
viola, Johnny-jump-up; 1915
violet wood-sorrel
Virginia bluebells; 1950
Virginia cutgrass, whitegrass
Virginia ground-cherry
Virginia mountain-mint
Virginia pepper-grass
Virginia smartweed, jumpseed
Virginia water-horehound
Virginia waterleaf
Virginia wild-rye
Virginia-creeper
viscid nightshade, hairy nightshade, 1992
W
wafer-ash
wahoo, burning-bush
walking-sedge
wall rocket; 1916
water cress; 1875
water cress; 1991
water dock
water horsetail
water smartweed
water speedwell
water speedwell, 1934
water star-grass
water starwort
water-clover, pepperwort
water-hemp
water-hyssop
water-milfoil
water-parsnip
water-pepper; 1885
water-plantain
waterpod
water-shield
water-thread pondweed
water-willow; 2003
waterwort
wavy-leaf thistle
wax currant
wayside violet
wedgegrass
wedge-leaf draba
wedgeleaf fogfruit
weeping lovegrass; 1984
weeping willow
western blue-flag
western buckeye
western fleabane
western heath aster
western ironweed
western large-toothed hawthorn
western obedient plant
western prairie fringed orchid
western ragweed
western rock-jasmine
western scaleseed
western serviceberry, saskatoon
western snowberry, wolfberry, buckbrush
western toothed spurge
western virgin's-bower
western wallflower
western water-horehound
western wheatgrass
western wild lettuce
western wild rose
wheat
white ash
white avens
white baneberry
white beardtongue
white camas
white campion, white cockle; 1891
white clover, ladino clover; 1873
white four-o'clock
white locoweed
white milkwort
white mustard; 1891
white oak
white prairie-clover
white snakeroot
white sweet-clover; 1888
white verbena
white water-crowfoot
white water-lily, lilypads
white wild-indigo
white wild-parsley
white woodland aster
whitestem pondweed
white-stemmed evening-primrose
whitlow-wort, whitlow-grass
whorled dropseed
whorled milkweed
whorled milkwort
wigeon-grass
wild bean
wild bergamot
wild four-o'clock
wild geranium
wild honeysuckle
wild lettuce
wild licorice
wild lily-of-the-valley
wild oats; 1962
wild onion
wild pansy, Rafinesque's violet
wild parsnip; 1890
wild senna
wild strawberry
wild turnip; 1897
wild yam
wild-begonia
wild-cucumber
wild-ginger; 1950s
wild-goose plum
wild-oats; 1999
wild-rice
wild-sarsaparilla
willow aster, Ontario aster
willow-leaf aster
willow-leaf dock, white dock
willow-leaf lettuce, least lettuce; 1971
windmill grass
winged loosestrife
winged pigweed, purple tumbleweed
winged wild-buckwheat
wingstem
winter cress; 1907
wintercreeper
winterfat
wire-lettuce, skeletonweed
wirestem muhly
wooly locoweed
wood lily
woodbine
woodland bluegrass
woodland strawberry
woodmint
woodreed
woods bedstraw
woodsia, cliff fern
wool-grass
woolly burdock; 1978
woolly croton
woolly milkweed
woolly plantain
wormseed wallflower
wormseed, Mexican tea; 1898
wormwood, absinthe; 1995
X
There are no plants in this category
Y
yarrow
yellow avens
yellow bedstraw; 1974
yellow chestnut oak, chinkapin oak
yellow coral-root
yellow cress
yellow foxtail, yellow bristle-grass; 1886
yellow lady's-slipper orchid, moccasin flower
yellow nutsedge, nut-grass
yellow oxalis, yellow wood-sorrel
yellow pond-lily, spatterdock, cow-lily, lilypads
yellow prairie violet
yellow sand-lily, yellow stickleaf
yellow star-grass
yellow star-thistle; 1908
yellow stickleaf
yellow sweet-clover;1885
yellow vetchling
yellow water iris, yellow flag; 1968
yellow water-crowfoot
yellow wild-buckwheat
yellow wild-parsley
yellow-cress
yellow-eyed-grass
yellow-spine thistle
yerba de tajo
yerba mansa; 1991
yucca, soapweed
Z
zigzag goldenrod