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Click on an accepted name below to view its PLANTS Profile with all synonyms, distribution map, more information, and web links if available. If shown, synonyms are indented beneath accepted counterparts. Click on a column header to learn about that category. Click on the Download link at the top right of the page to download a comma delimited text version of this data to use in another application or database.

Scientific Name                               State and Province Family
Abronia CAN(BC), USA(CO,NM,AZ,CA) Nyctaginaceae
Abronia ameliae USA(TX) Nyctaginaceae
Abronia angustifolia USA(AZ,TX) Nyctaginaceae
Abronia carletonii USA(CO,NM) Nyctaginaceae
Abronia fragrans USA(ND,OK) Nyctaginaceae
Abronia macrocarpa USA(TX) Nyctaginaceae
Abutilon USA(AL,AZ,CA,FL), CAN(BC,MB,AB,NB) Malvaceae
Abutilon abutiloides USA(AZ,TX) Malvaceae
Abutilon berlandieri USA(TX) Malvaceae
Abutilon hulseanum USA(FL,LA,TX) Malvaceae
Abutilon hypoleucum USA(TX) Malvaceae
Abutilon malacum USA(AZ,TX,NM) Malvaceae
Abutilon mollicomum USA(NM,AZ) Malvaceae
Abutilon parvulum USA(AZ,CA,NV) Malvaceae
Abutilon theophrasti CAN(ON,SK,AB), USA(CT,MS,MO) Malvaceae
Abutilon trisulcatum USA(TX) Malvaceae
Abutilon wrightii USA(NM,TX) Malvaceae
Acalypha USA(AR,DC,IN,ME), CAN(ON,NB,NS,QC) Euphorbiaceae
Acalypha gracilens USA(AL,FL) Euphorbiaceae
Acalypha monococca USA(MO,OK) Euphorbiaceae
Acalypha monostachya USA(TX) Euphorbiaceae
Acalypha neomexicana USA(NM,AZ,TX) Euphorbiaceae
Acalypha ostryifolia USA(AR,IN) Euphorbiaceae
Acalypha phleoides USA(NM,AZ,TX) Euphorbiaceae
Acalypha poiretii USA(AL,TX) Euphorbiaceae
Acalypha radians USA(TX) Euphorbiaceae
Acalypha rhomboidea USA(AR,DC,IN,ME,MA), CAN(NS,QC,NB,ON) Euphorbiaceae
Acalypha virginica USA(AR,DC,IN,ME) Euphorbiaceae
Acanthocereus USA(FL,HI) Cactaceae
Acanthocereus tetragonus USA+(VI) Cactaceae
Acanthospermum USA(AL,FL), CAN(ON) Asteraceae
Acanthospermum australe USA(MS,OR) Asteraceae
Acarospora CAN(ON,SK,YT,NT), USA(AZ,CA,GA,KS) Acarosporaceae
Acer FRA(SB), USA(AK,AR,DC) Aceraceae
Acer floridanum USA(AL,FL,GA) Aceraceae
Acer grandidentatum USA(AZ,CO,NM) Aceraceae
Acer grandidentatum var. grandidentatum USA(WY,AZ) Aceraceae
Acer grandidentatum var. sinuosum USA(AZ,TX) Aceraceae
Acer leucoderme USA(NC,SC,TN) Aceraceae
Acer negundo USA(AL,AZ,CA), CAN(ON,SK,NT) Aceraceae
Acer negundo var. negundo CAN(ON,SK,NT), USA(AL,FL,GA) Aceraceae
Acer negundo var. texanum USA(AL,KS) Aceraceae
Acer rubrum USA(AR,DC,IN,ME,MA), CAN(NB,NS,PE,QC,NF) Aceraceae
Acer rubrum var. drummondii USA(AL,FL) Aceraceae
Acer rubrum var. rubrum USA(AR,DC,IN,ME,MA,MN), CAN(ON,NB,NS,PE,QC,NF) Aceraceae
Acer rubrum var. trilobum CAN(NS,QC,NB,ON), USA(AL,FL,GA,KY,NC,PA) Aceraceae
Acer saccharinum USA(AL,CA,FL,GA), CAN(QC,NB,ON,SK) Aceraceae
Achillea USA(AK,AR,DC,ID), DEN(GL), FRA(SB) Asteraceae
Achillea millefolium DEN(GL), USA(AK,AR,DC), FRA(SB) Asteraceae
Achillea millefolium var. occidentalis FRA(SB), CAN(BC,MB,NS,PE,QC,NF), USA(AK,AR,DC,ID,IN,ME) Asteraceae
Achnatherum USA(ND,OK,OR,SD,WY), CAN(SK,YT,AB,BC,MB) Poaceae
Achnatherum aridum USA(CO,NM,AZ) Poaceae
Achnatherum clandestinum USA(TX) Poaceae
Achnatherum curvifolium USA(TX,NM) Poaceae
Achnatherum eminens USA(AZ,TX) Poaceae
Achnatherum hymenoides CAN(SK,YT,AB,BC), USA(ND,OK,OR,SD) Poaceae
Achnatherum lobatum USA(AZ,TX) Poaceae
Achnatherum nelsonii ssp. dorei USA(OR,SD,WY), CAN(SK,YT,AB) Poaceae
Achnatherum perplexum USA(NM,AZ) Poaceae
Achnatherum robustum USA(AZ,CO) Poaceae
Achnatherum scribneri USA(TX,OK) Poaceae
Achyranthes USA(AL,FL,HI) Amaranthaceae
Achyranthes aspera USA+(VI) Amaranthaceae
Achyranthes aspera var. pubescens USA(FL,HI) Amaranthaceae
Acleisanthes USA(AZ,CA) Nyctaginaceae
Acleisanthes acutifolia USA(TX) Nyctaginaceae
Acleisanthes anisophylla USA(TX) Nyctaginaceae
Acleisanthes crassifolia USA(TX) Nyctaginaceae
Acleisanthes longiflora USA(AZ,CA) Nyctaginaceae
Acleisanthes obtusa USA(TX) Nyctaginaceae
Acleisanthes wrightii USA(TX) Nyctaginaceae
Acmella USA(AL,FL,GA) Asteraceae
Acmella oppositifolia USA(AL,FL) Asteraceae
Acmella oppositifolia var. repens USA(MS,MO,OK) Asteraceae
Acorus USA(AL,CA,GA,KS), CAN(BC,MB,AB,NB) Acoraceae
Acorus calamus USA(AL,CA,GA,KS,KY,LA), CAN(MB,NS,PE,QC,NB,ON) Acoraceae
Acourtia USA(NM,AZ) Asteraceae
Acourtia nana USA(AZ,TX,NM) Asteraceae
Acourtia runcinata USA(TX) Asteraceae
Acourtia wrightii USA(AZ,NV) Asteraceae
Acroptilon USA(AZ,CA,KS), CAN(ON,SK,BC) Asteraceae
Acroptilon repens CAN(AB,BC,MB,ON), USA(AZ,CA,KS,KY) Asteraceae
Adelia USA(TX) Euphorbiaceae
Adelia vaseyi USA(TX) Euphorbiaceae
Adiantum CAN(ON,BC,AB,NB,NS,QC), USA(AL,AZ,CA,FL,GA,HI) Pteridaceae
Adiantum capillus-veneris USA(AL,AZ), CAN(BC) Pteridaceae
Adiantum tricholepis USA(TX) Pteridaceae
Adolphia USA(CA,TX) Rhamnaceae
Adolphia infesta USA(NM,TX) Rhamnaceae
Adonis CAN(ON,MB), USA(AL,CA,KY) Ranunculaceae
Adonis annua USA(MO,AR), CAN(ON,MB) Ranunculaceae
Aegilops USA(AL,AZ) Poaceae
Aegilops cylindrica USA(AR,ID,IN) Poaceae
Aeschynomene USA(AL,AZ,CA) Fabaceae
Aeschynomene evenia USA(TX) Fabaceae
Aeschynomene indica USA(NC,SC,VA,MS,MO) Fabaceae
Aeschynomene rudis USA(AL,CA,FL,GA) Fabaceae
Aeschynomene viscidula USA(AL,FL) Fabaceae
Aesculus CAN(QC,NB,BC,ON), USA(AL,CA,FL,GA,KS,KY) Hippocastanaceae
Aesculus ×bushii USA(AL,LA) Hippocastanaceae
Aesculus glabra CAN(ON), USA(MS,MO,OH) Hippocastanaceae
Aesculus glabra var. arguta USA(KS,NE) Hippocastanaceae
Aesculus glabra var. glabra CAN(ON), USA(MS,MO) Hippocastanaceae
Aesculus pavia USA(AL,FL), CAN(ON) Hippocastanaceae
Aesculus pavia var. flavescens USA(TX) Hippocastanaceae
Aesculus pavia var. pavia USA(MS,MO), CAN(ON) Hippocastanaceae
Agalinis CAN(NB,NS,QC,ON), USA(AL,FL,GA,KS) Scrophulariaceae
Agalinis aspera USA(MO,ND,OK), CAN(MB) Scrophulariaceae
Agalinis auriculata USA(AR,DC,IN) Scrophulariaceae
Agalinis calycina USA(TX,NM) Scrophulariaceae
Agalinis densiflora USA(KS,TX) Scrophulariaceae
Agalinis edwardsiana USA(TX) Scrophulariaceae
Agalinis fasciculata USA(AR,IN) Scrophulariaceae
Agalinis gattingeri USA(AL,KS), CAN(ON) Scrophulariaceae
Agalinis heterophylla USA(AL,GA,KS) Scrophulariaceae
Agalinis homalantha USA(OK,AR) Scrophulariaceae
Agalinis maritima USA(AL,CT,MS), CAN(NS,NB) Scrophulariaceae
Agalinis maritima var. grandiflora USA(AL,FL,LA,TX,NC) Scrophulariaceae
Agalinis navasotensis USA(TX) Scrophulariaceae
Agalinis oligophylla USA(MS,TN) Scrophulariaceae
Agalinis pulchella USA(AL,FL,GA) Scrophulariaceae
Agalinis purpurea USA(CT,MS,MO,OH), CAN(ON) Scrophulariaceae
Agalinis strictifolia USA(TX) Scrophulariaceae
Agalinis tenuifolia USA(AL,FL,GA), CAN(ON,NB,MB) Scrophulariaceae
Agalinis tenuifolia var. leucanthera USA(AR,AL) Scrophulariaceae
Agalinis tenuifolia var. macrophylla USA(AR,IN), CAN(ON) Scrophulariaceae
Agalinis tenuifolia var. parviflora CAN(ON,QC,MB), USA(MO,ND,OH,OK) Scrophulariaceae
Agalinis viridis USA(AR,MS) Scrophulariaceae
Agastache CAN(ON,SK,NT,AB), USA(CT,MO,ND,OH) Lamiaceae
Agastache cana USA(TX,NM) Lamiaceae
Agastache micrantha USA(NM,AZ) Lamiaceae
Agastache pallidiflora USA(AZ,TX,CO) Lamiaceae
Agastache pallidiflora ssp. neomexicana USA(TX,NM) Lamiaceae
Agastache pallidiflora ssp. neomexicana var. havardii USA(TX,NM) Lamiaceae
Agave USA(NM,AZ) Agavaceae
Agave americana USA(AZ,CA) Agavaceae
Agave americana ssp. americana USA+(VI) Agavaceae
Agave americana ssp. americana var. americana USA+(VI) Agavaceae
Agave americana ssp. protamericana USA(TX) Agavaceae
Agave asperrima USA(TX) Agavaceae
Agave glomeruliflora USA(TX) Agavaceae
Agave gracilipes USA(NM,TX) Agavaceae
Agave havardiana USA(TX) Agavaceae
Agave lechuguilla USA(TX,NM) Agavaceae
Agave parryi USA(AZ,TX) Agavaceae
Agave parryi ssp. neomexicana USA(TX,NM) Agavaceae
Agave parryi ssp. parryi USA(NM,AZ) Agavaceae
Agave univittata USA(AZ,TX) Agavaceae
Agave weberi USA(TX) Agavaceae
Agdestis USA(FL,TX) Phytolaccaceae
Agdestis clematidea USA(FL,TX) Phytolaccaceae
Ageratina USA(AL,AZ,CA,FL), CAN(ON,NT,NB,NS) Asteraceae
Ageratina altissima CAN(NS,QC,ON,NT), USA(CT,MS,MO,ND) Asteraceae
Ageratina altissima var. altissima CAN(ON,NT,NB), USA(DE,IL,IA) Asteraceae
Ageratina altissima var. angustata USA(MO,OK) Asteraceae
Ageratina havanensis USA(TX) Asteraceae
Ageratina herbacea USA(CO,NM,AZ,CA) Asteraceae
Ageratina rothrockii USA(AZ,TX,NM) Asteraceae
Ageratina wrightii USA(NM,AZ,TX) Asteraceae
Ageratum USA(MA,CT) Asteraceae
Ageratum corymbosum USA(AZ,TX) Asteraceae
Agrimonia CAN(ON,SK,AB,NB,NS), FRA(SB) Rosaceae
Agrimonia incisa USA(MS,NC) Rosaceae
Agrimonia microcarpa USA(AL,FL) Rosaceae
Agrimonia parviflora CAN(ON), USA(AL,GA) Rosaceae
Agrimonia rostellata USA(AL,FL) Rosaceae
×Agropogon USA(NM,AL,CA) Poaceae
×Agropogon littoralis USA(NM,AL) Poaceae
Agropyron USA(CT,MO,ND), CAN(AB,NS,QC) Poaceae
Agropyron cristatum CAN(ON,SK,YT,NT,LB), USA(CA,KS,KY,MT,NE) Poaceae
Agropyron cristatum ssp. pectinatum USA(CA,KS,KY,MT), CAN(NS,QC,AB,BC) Poaceae
Agropyron desertorum USA(IN,MA,NY) Poaceae
Agrostemma CAN(NB,ON,SK,MB,PE), USA(AL,CA,FL,GA,KS) Caryophyllaceae
Agrostemma githago USA(AL,CA,FL,GA,KS,KY), CAN(PE,QC,NB,MB,ON,SK) Caryophyllaceae
Agrostis DEN(GL), USA(CO,DE,IL,IA), CAN(ON,SK,YT,NT) Poaceae
Agrostis avenacea USA(OH,CA) Poaceae
Agrostis elliottiana USA(AL,AZ,CA) Poaceae
Agrostis exarata USA(AK,ID,OK,OR), CAN(AB,SK,YT,NT) Poaceae
Agrostis gigantea DEN(GL), USA(CO,DE,IL) Poaceae
Agrostis hyemalis CAN(ON), USA(AL,FL,GA) Poaceae
Agrostis perennans CAN(NB,NS,PE,QC,NF), USA(AL,CA,FL,GA,KS) Poaceae
Agrostis scabra USA(AK,AR,ID,IN), CAN(ON,SK,YT,NT), DEN(GL) Poaceae
Agrostis stolonifera USA(AK,AR,DC), DEN(GL), FRA(SB) Poaceae
Ailanthus USA(AL,AZ,CA,FL,GA), CAN(ON,QC) Simaroubaceae
Ailanthus altissima CAN(ON,QC), USA(AL,AZ,CA) Simaroubaceae
Aira USA(AL,CA,FL), CAN(NS,BC,YT) Poaceae
Aira caryophyllea USA(AK,AR,DC,ID,IN), CAN(BC,NS,YT) Poaceae
Aira caryophyllea var. caryophyllea CAN(NS,BC,YT), USA(AL,CA,FL,GA) Poaceae
Aira elegans USA(AR,NJ,MD,NM,NC) Poaceae
Ajuga CAN(NS,QC,NF,ON), USA(DE,IL,IA,MD) Lamiaceae
Ajuga reptans USA(CT,MS,OH,OR,WI,AL,FL), CAN(BC,NS,QC,NF,ON) Lamiaceae
Albizia USA(DE,IL,MD) Fabaceae
Albizia julibrissin USA(AL,AZ,CA,FL) Fabaceae
Albizia lebbeck USA(CA,FL,HI,TX) Fabaceae
Alcea USA(CA,FL,GA,KS), CAN(MB,ON,QC,NB) Malvaceae
Alcea rosea USA(CO,DE,IL,IA,MD), CAN(QC,MB,ON,NB) Malvaceae
Aletes USA(WY,AZ,TX) Apiaceae
Aletes acaulis USA(TX,CO,NM) Apiaceae
Aletes filifolius USA(TX,NM) Apiaceae
Aletris CAN(ON), USA(AL,FL,GA) Liliaceae
Aletris aurea USA(AL,FL,GA) Liliaceae
Aletris farinosa USA(AL,FL,GA), CAN(ON) Liliaceae
Alhagi USA(AZ,CA,NV) Fabaceae
Alhagi maurorum USA(AZ,CA) Fabaceae
Alisma CAN(ON,SK,YT), USA(AK,AR,DC) Alismataceae
Alisma subcordatum USA(CO,DE,IL), CAN(QC,MB,ON) Alismataceae
Allenrolfea USA(AZ,CA) Chenopodiaceae
Allenrolfea occidentalis USA(AZ,CA,NV) Chenopodiaceae
Allionia USA(OK,CO) Nyctaginaceae
Allionia choisyi USA(AZ,TX,UT) Nyctaginaceae
Allionia incarnata USA(AZ,CA,NV) Nyctaginaceae
Allionia incarnata var. incarnata USA(AZ,TX) Nyctaginaceae
Allium USA(AL,AZ,CA), CAN(ON,SK,YT) Liliaceae
Allium ampeloprasum USA(AR,NY) Liliaceae
Allium canadense CAN(QC,ON,NB), USA(AL,FL,GA) Liliaceae
Allium canadense var. canadense USA(DE,IL,IA,MD,MI), CAN(NB,QC,ON) Liliaceae
Allium canadense var. ecristatum USA(TX) Liliaceae
Allium canadense var. fraseri USA(KS,MT) Liliaceae
Allium canadense var. hyacinthoides USA(TX,OK) Liliaceae
Allium canadense var. mobilense USA(MS,MO) Liliaceae
Allium cepa USA(IL,MI) Liliaceae
Allium cernuum USA(MS,MO,OH), CAN(AB,ON,SK) Liliaceae
Allium cernuum var. cernuum CAN(AB,ON,SK,BC), USA(MS,MO,OH,OR) Liliaceae
Allium cernuum var. neomexicanum USA(AZ,TX,NM) Liliaceae
Allium coryi USA(TX) Liliaceae
Allium drummondii USA(OK,SD,AR) Liliaceae
Allium elmendorfii USA(TX) Liliaceae
Allium geyeri USA(CO,NM,AZ), CAN(BC,SK,AB) Liliaceae
Allium geyeri var. geyeri CAN(AB,SK), USA(ID,OR,SD,WY) Liliaceae
Allium glandulosum USA(AZ,TX,NM) Liliaceae
Allium kunthii USA(AZ,TX,NM) Liliaceae
Allium macropetalum USA(AZ,TX,UT,CO) Liliaceae
Allium perdulce USA(OK,SD) Liliaceae
Allium perdulce var. perdulce USA(KS,NE,TX,IA) Liliaceae
Allium perdulce var. sperryi USA(TX) Liliaceae
Allium porrum USA(KS,TX,IL) Liliaceae
Allium runyonii USA(TX) Liliaceae
Allium stellatum USA(KS,TX,IL,IA), CAN(ON,SK,MB) Liliaceae
Allolepis USA(TX) Poaceae
Allolepis texana USA(TX) Poaceae
Allowissadula USA(NM,TX) Malvaceae
Allowissadula holosericea USA(NM,TX) Malvaceae
Allowissadula lozanii USA(TX) Malvaceae
Alnus CAN(AB,NB,ON), USA(AK,AR,DC), FRA(SB) Betulaceae
Alnus serrulata USA(DE,IL,MD,NC,PA,SC,TN), CAN(NS,QC,NB) Betulaceae
Alocasia USA(FL,HI,TX,PW) Araceae
Alocasia macrorrhizos USA(FL,HI,TX,PW) Araceae
Aloe USA(CA,FL) Aloaceae
Aloe vera USA(FL,HI) Aloaceae
Alopecurus DEN(GL), FRA(SB), CAN(NS,PE,QC,NF,BC,MB) Poaceae
Alopecurus carolinianus USA(AL,AZ,CA,FL), CAN(SK,BC,AB) Poaceae
Alopecurus geniculatus FRA(SB), CAN(NS,PE,QC,NF,BC), DEN(GL) Poaceae
Alopecurus geniculatus var. geniculatus CAN(AB,NB,ON,SK,YT), FRA(SB), USA(AK,DC,ID,ME,CT) Poaceae
Alopecurus myosuroides CAN(MB), USA(DE,MD) Poaceae
Alophia USA(AR,MS,OK) Iridaceae
Alophia drummondii USA(LA,TX,MS) Iridaceae
Aloysia USA(NM,NC) Verbenaceae
Aloysia gratissima USA(AZ,TX) Verbenaceae
Aloysia gratissima var. gratissima USA(NM,TX) Verbenaceae
Aloysia gratissima var. schulziae USA(AZ,TX) Verbenaceae
Aloysia macrostachya USA(TX) Verbenaceae
Aloysia wrightii USA(AZ,CA,NV) Verbenaceae
Alternanthera USA(AL,AZ,CA,FL) Amaranthaceae
Alternanthera bettzichiana USA(MD,CA) Amaranthaceae
Alternanthera caracasana USA(AL,AZ) Amaranthaceae
Alternanthera flavogrisea USA(TX) Amaranthaceae
Alternanthera paronychioides USA(NJ,MS) Amaranthaceae
Alternanthera paronychioides var. paronychioides USA(AL,FL,GA) Amaranthaceae
Alternanthera philoxeroides USA(AL,CA) Amaranthaceae
Alternanthera pungens USA(AL,FL) Amaranthaceae
Alternanthera sessilis USA(MD,SC,AL) Amaranthaceae
Alysicarpus USA(NC,VA,AL) Fabaceae
Alysicarpus vaginalis USA(MS) Fabaceae
Amaranthus FRA(SB), USA(AK,AR,DC,ID,IN) Amaranthaceae
Amaranthus acanthochiton USA(AZ,TX) Amaranthaceae
Amaranthus albus CAN(BC,MB,ON,SK), FRA(SB) Amaranthaceae
Amaranthus arenicola USA(CA,KS) Amaranthaceae
Amaranthus australis USA(NC,TN) Amaranthaceae
Amaranthus bigelovii USA(NM,LA,TX) Amaranthaceae
Amaranthus blitoides CAN(AB,SK,BC,MB,QC,ON), USA(CT,MO,ND,OH,OK,OR) Amaranthaceae
Amaranthus blitum USA(MD,NC,PA,SC), CAN(NS,QC,ON) Amaranthaceae
Amaranthus blitum var. pseudogracilis USA(UM,MO) Amaranthaceae
Amaranthus californicus USA(CA,KS,MT), CAN(AB,SK) Amaranthaceae
Amaranthus crassipes USA(AL,AZ) Amaranthaceae
Amaranthus crassipes var. crassipes USA+(VI) Amaranthaceae
Amaranthus crassipes var. warnockii USA(TX,NM) Amaranthaceae
Amaranthus cruentus CAN(QC,ON,BC), USA(CT,MO,OH,OR,WI) Amaranthaceae
Amaranthus fimbriatus USA(NM,AZ,CA,NV,TX) Amaranthaceae
Amaranthus greggii USA(LA,TX) Amaranthaceae
Amaranthus hybridus CAN(MB,NS,QC,ON), USA(AL,AZ,CA,FL,GA) Amaranthaceae
Amaranthus hypochondriacus USA(MS,MO,WI) Amaranthaceae
Amaranthus obcordatus USA(AZ,TX,NM) Amaranthaceae
Amaranthus palmeri USA(CO,IL,MD), CAN(ON) Amaranthaceae
Amaranthus polygonoides USA(FL,TX) Amaranthaceae
Amaranthus powellii USA(AZ,CA,FL), CAN(PE,QC,BC) Amaranthaceae
Amaranthus powellii ssp. powellii USA(AZ,CA,FL,KS), CAN(PE,QC,BC,AB) Amaranthaceae
Amaranthus retroflexus FRA(SB), USA(AK,AR,DC,ID,IN) Amaranthaceae
Amaranthus scleropoides USA(TX,OK) Amaranthaceae
Amaranthus spinosus USA(AL,CA,FL), CAN(MB,ON) Amaranthaceae
Amaranthus tamaulipensis USA(TX) Amaranthaceae
Amaranthus ×texensis USA(TX) Amaranthaceae
Amaranthus torreyi USA(AZ,CA) Amaranthaceae
Amaranthus tuberculatus CAN(ON,QC,MB), USA(CT,MS,MO) Amaranthaceae
Amaranthus viridis USA(AL,AZ,FL) Amaranthaceae
Amaranthus wrightii USA(CO,NM,AZ) Amaranthaceae
Amblyolepis USA(TX) Asteraceae
Amblyolepis setigera USA(TX) Asteraceae
Ambrosia CAN(ON,SK,NT,BC), USA(AK,AR,DC,ID) Asteraceae
Ambrosia acanthicarpa CAN(SK,MB,AB), USA(ID,MN,AZ) Asteraceae
Ambrosia artemisiifolia CAN(NS,PE,QC), USA(CO,DE,IL) Asteraceae
Ambrosia artemisiifolia var. elatior CAN(ON,SK,NT), USA(CO,DE,IL) Asteraceae
Ambrosia artemisiifolia var. paniculata USA(ME,MA,NY,AL) Asteraceae
Ambrosia bidentata USA(AL,GA,KS,KY) Asteraceae
Ambrosia cheiranthifolia USA(TX) Asteraceae
Ambrosia confertiflora USA(CO,NM,TN) Asteraceae
Ambrosia grayi USA(CO,NM) Asteraceae
Ambrosia psilostachya CAN(ON,SK,BC,MB,AB,NS,PE), USA(AR,ID,IN,ME,MA,MN,NJ) Asteraceae
Ambrosia tomentosa USA(AZ,KS) Asteraceae
Ambrosia trifida CAN(AB,NB,MB), USA(AL,AZ,CA) Asteraceae
Ambrosia trifida var. texana USA(AZ,KS,LA) Asteraceae
Ambrosia trifida var. trifida USA(CT,MS,MO,ND), CAN(NS,PE,QC,ON) Asteraceae
Amelanchier USA(AK,AR,DC), FRA(SB) Rosaceae
Amelanchier arborea CAN(NS,QC,ON,NB), USA(DE,IL,IA,MD) Rosaceae
Amelanchier arborea var. arborea USA(AL,FL,GA,KS), CAN(NB,NS,QC,ON) Rosaceae
Amelanchier utahensis USA(AZ,CA,MT,NV) Rosaceae
Amelanchier utahensis var. utahensis USA(CO,NM) Rosaceae
Ammannia USA(AR,DC,ID), CAN(ON,BC) Lythraceae
Ammannia auriculata USA(AZ,KS,LA) Lythraceae
Ammannia coccinea USA(AL,AZ) Lythraceae
Ammannia latifolia USA(FL,GA,LA) Lythraceae
Ammannia robusta USA(AZ,CA,KS,KY), CAN(ON,BC) Lythraceae
Ammi USA(AL,AZ) Apiaceae
Ammi majus USA(AL,AZ) Apiaceae
Ammi visnaga USA(AL,CA,FL) Apiaceae
Ammocodon USA(AZ,TX,NM) Nyctaginaceae
Ammocodon chenopodioides USA(AZ,TX) Nyctaginaceae
Ammoselinum USA(NM,NC,TN,MS) Apiaceae
Ammoselinum butleri USA(KS,LA) Apiaceae
Ammoselinum popei USA(KS,TX) Apiaceae
Amoreuxia USA(NM,AZ) Bixaceae
Amoreuxia wrightii USA(TX) Bixaceae
Amorpha USA(AL,AZ,CA,FL), CAN(ON,QC,MB,NB) Fabaceae
Amorpha canescens USA(MO,ND,OK), CAN(ON,MB) Fabaceae
Amorpha fruticosa USA(CT,MS,MO,ND), CAN(ON,QC,NB,MB) Fabaceae
Amorpha laevigata USA(OK,LA) Fabaceae
Amorpha paniculata USA(AR,LA,TX) Fabaceae
Amorpha roemeriana USA(TX) Fabaceae
Ampelopsis USA(CT,MS,MO) Vitaceae
Ampelopsis cordata USA(DE,IL,IA) Vitaceae
Amphiachyris USA(MS,MO,OH) Asteraceae
Amphiachyris amoena USA(TX) Asteraceae
Amphiachyris dracunculoides USA(AL,KS) Asteraceae
Amphicarpaea USA(AL,FL,GA,KS), CAN(NB,MB,NS,QC) Fabaceae
Amphicarpaea bracteata var. bracteata CAN(ON,NB,NS,QC), USA(IL,IA,MD,MI) Fabaceae
Amphicarpaea bracteata var. comosa CAN(QC,MB,ON), USA(AR,IN,ME) Fabaceae
Amsinckia CAN(BC,MB,AB,SK), USA(AK,ID,ME,MA) Boraginaceae
Amsinckia lycopsoides USA(CO,IL), CAN(BC) Boraginaceae
Amsinckia menziesii USA(AK,ID,ME,MA,NY), CAN(AB,BC,MB,SK,YT) Boraginaceae
Amsinckia menziesii var. intermedia CAN(SK,YT,BC,MB), USA(IL,PA,VA,CT) Boraginaceae
Amsinckia menziesii var. menziesii CAN(BC), USA(CO,NC) Boraginaceae
Amsonia USA(AL,AZ) Apocynaceae
Amsonia ciliata USA(NC,SC) Apocynaceae
Amsonia ciliata var. ciliata USA(AL,FL) Apocynaceae
Amsonia ciliata var. tenuifolia USA(NC,SC) Apocynaceae
Amsonia ciliata var. texana USA(OK,TX) Apocynaceae
Amsonia illustris USA(KS,TX,AR) Apocynaceae
Amsonia longiflora USA(AZ,TX,NM) Apocynaceae
Amsonia longiflora var. longiflora USA(NM,AZ) Apocynaceae
Amsonia longiflora var. salpignantha USA(NM,TX) Apocynaceae
Amsonia palmeri USA(AZ,TX) Apocynaceae
Amsonia repens USA(LA,TX) Apocynaceae
Amsonia tabernaemontana USA(DE,IL) Apocynaceae
Amsonia tabernaemontana var. salicifolia USA(MS,MO) Apocynaceae
Amsonia tabernaemontana var. tabernaemontana USA(AL,FL,GA,KS) Apocynaceae
Amsonia tharpii USA(TX,NM) Apocynaceae
Amsonia tomentosa USA(NM,AZ) Apocynaceae
Amsonia tomentosa var. stenophylla USA(NM,AZ) Apocynaceae
Amyris USA(FL,TX) Rutaceae
Amyris madrensis USA(TX) Rutaceae
Amyris texana USA(TX) Rutaceae
Anagallis USA(AR,DC,ID,IN), FRA(SB), DEN(GL) Primulaceae
Anagallis arvensis USA(AR,DC,ID,IN,ME), DEN(GL) Primulaceae
Anagallis arvensis ssp. arvensis USA(CT,MS,DE), DEN(GL) Primulaceae
Anagallis minima CAN(SK,AB,NS,BC), USA(CO,DE,IL,MD,NM,SC) Primulaceae
Anaphalis FRA(SB), CAN(NS,PE,QC,NF) Asteraceae
Anaphalis margaritacea FRA(SB), CAN(NS,PE,QC,NF) Asteraceae
Anchusa USA(CA,MT,NH), CAN(ON,SK,AB) Boraginaceae
Anchusa azurea CAN(BC), USA(CA,MT,NH,TX) Boraginaceae
Ancistrocactus USA(TX) Cactaceae
Ancistrocactus brevihamatus USA(TX) Cactaceae
Ancistrocactus brevihamatus var. brevihamatus USA(TX) Cactaceae
Ancistrocactus brevihamatus var. pallidus USA(TX) Cactaceae
Ancistrocactus scheeri USA(TX) Cactaceae
Ancistrocactus tobuschii USA(TX) Cactaceae
Andropogon USA(CT,MS,MO,ND,OH,OK), CAN(ON,SK,MB,QC) Poaceae
Andropogon gerardii USA(AL,AZ,FL), CAN(QC,ON,SK) Poaceae
Andropogon glaucopsis USA(MS,AL) Poaceae
Andropogon glomeratus USA(DE,IL) Poaceae
Andropogon glomeratus var. hirsutior USA(AL,FL) Poaceae
Andropogon glomeratus var. pumilus USA(NM,NC) Poaceae
Andropogon gyrans var. stenophyllus USA(NC,SC,VA) Poaceae
Andropogon hallii USA(IN,MN,CO,IL), CAN(SK,MB) Poaceae
Andropogon ternarius USA(DE,IL) Poaceae
Andropogon ternarius var. ternarius USA(MS,MO) Poaceae
Andropogon virginicus CAN(ON), USA(AL,CA,FL) Poaceae
Andropogon virginicus var. virginicus CAN(ON), USA(AL,CA,FL) Poaceae
Androsace DEN(GL), CAN(QC,NF,AB,ON,SK) Primulaceae
Androsace occidentalis CAN(AB,BC,MB,ON,SK), USA(AZ,CA,KS,MT,NE) Primulaceae
Androsace septentrionalis DEN(GL), CAN(QC,NF,BC,MB) Primulaceae
Androsace septentrionalis ssp. glandulosa USA(CO,NM) Primulaceae
Androstephium USA(CO,NM) Liliaceae
Androstephium coeruleum USA(OK,KS) Liliaceae
Anemia USA(FL,TX) Anemiaceae
Anemia mexicana USA(TX) Anemiaceae
Anemone CAN(BC,MB,ON), USA(CO,DE,IL) Ranunculaceae
Anemone berlandieri USA(MS,OK) Ranunculaceae
Anemone caroliniana USA(AL,GA) Ranunculaceae
Anemone edwardsiana USA(NM,TX) Ranunculaceae
Anemone edwardsiana var. edwardsiana USA(TX,NM) Ranunculaceae
Anemone edwardsiana var. petraea USA(TX) Ranunculaceae
Anemone tuberosa USA(AZ,CA) Ranunculaceae
Anemone tuberosa var. texana USA(NM,TX) Ranunculaceae
Anemone tuberosa var. tuberosa USA(NM,AZ) Ranunculaceae
Anemopsis USA(OK,OR,AZ,CA,KS) Saururaceae
Anemopsis californica USA(AZ,CA) Saururaceae
Anethum USA(AR,IN,ME,MA,MN), CAN(BC,MB,ON,SK,QC) Apiaceae
Anethum graveolens USA(AZ,CA,HI,KS), CAN(BC,MB,QC,ON) Apiaceae
Anisacanthus USA(NM,AZ,TX) Acanthaceae
Anisacanthus linearis USA(TX) Acanthaceae
Anisacanthus puberulus USA(TX) Acanthaceae
Anisacanthus quadrifidus USA(TX) Acanthaceae
Anisacanthus quadrifidus var. wrightii USA(TX) Acanthaceae
Anoda USA(CT,MS,MO,OH) Malvaceae
Anoda crenatiflora USA(AZ,TX) Malvaceae
Anoda cristata USA(AR,DC) Malvaceae
Anoda lanceolata USA(NM,AZ,TX) Malvaceae
Anoda pentaschista USA(AZ,CA) Malvaceae
Anredera USA(DC,CA) Basellaceae
Anredera cordifolia USA(CA,FL) Basellaceae
Anredera vesicaria USA+(VI) Basellaceae
Antennaria DEN(GL), FRA(SB), USA(AK,AR,DC,ID,IN,ME) Asteraceae
Antennaria marginata USA(AZ,CA,TX) Asteraceae
Antennaria parlinii USA(AL,GA,KS), CAN(NB,NS,QC) Asteraceae
Antennaria parlinii ssp. fallax USA(CT,MS,MO,ND), CAN(NB,QC,ON,MB) Asteraceae
Antennaria parvifolia CAN(ON,SK,BC,MB,AB), USA(AZ,CA,KS,MT,NE) Asteraceae
Antennaria plantaginifolia USA(AR,DC,IN) Asteraceae
Anthaenantia USA(AL,FL) Poaceae
Anthaenantia rufa USA(NC,SC,AR) Poaceae
Anthemis CAN(AB,NB,NS), USA(CO,DE,IL) Asteraceae
Anthemis cotula CAN(AB,NB,NS,PE), USA(AL,AZ,CA,FL) Asteraceae
Anthoxanthum USA(AK,AR,DC,ID,IN,ME,MA), CAN(ON,YT,NT,NU,LB,BC,MB), DEN(GL) Poaceae
Anthoxanthum aristatum USA(AR,ME,MA), CAN(BC,QC) Poaceae
Anthoxanthum odoratum CAN(ON,BC,NB,NS), DEN(GL), FRA(SB) Poaceae
Anthoxanthum odoratum ssp. odoratum DEN(GL), USA(AK,AR,DC,ID), FRA(SB) Poaceae
Antigonon USA(AL,FL) Polygonaceae
Antigonon leptopus USA(AL,FL) Polygonaceae
Antiphytum USA(NM,TX) Boraginaceae
Antiphytum floribundum USA(TX,NM) Boraginaceae
Antiphytum heliotropioides USA(TX) Boraginaceae
Anulocaulis USA(NM,AZ) Nyctaginaceae
Anulocaulis eriosolenus USA(TX) Nyctaginaceae
Anulocaulis leiosolenus USA(NM,AZ,NV) Nyctaginaceae
Anulocaulis leiosolenus var. gypsogenus USA(TX,NM) Nyctaginaceae
Anulocaulis leiosolenus var. lasianthus USA(TX) Nyctaginaceae
Anulocaulis leiosolenus var. leiosolenus USA(NM,AZ) Nyctaginaceae
Anulocaulis reflexus USA(TX) Nyctaginaceae
Apera USA(CT,MO,OH), CAN(BC,ON) Poaceae
Apera spica-venti CAN(ON), USA(CA,KY,TX) Poaceae
Aphanes CAN(BC,NS), USA(AL,CA,FL) Rosaceae
Aphanes microcarpa USA(AL,FL), CAN(BC) Rosaceae
Aphanostephus USA(AR,NM,OK) Asteraceae
Aphanostephus pilosus USA(NM,TX) Asteraceae
Aphanostephus ramosissimus USA(NM,AZ) Asteraceae
Aphanostephus ramosissimus var. humilis USA(AZ,TX) Asteraceae
Aphanostephus ramosissimus var. ramosissimus USA(TX,NM,OK) Asteraceae
Aphanostephus riddellii USA(TX,NM) Asteraceae
Aphanostephus skirrhobasis USA(OK,FL,KS,LA) Asteraceae
Aphanostephus skirrhobasis var. kidderi USA(TX) Asteraceae
Aphanostephus skirrhobasis var. skirrhobasis USA(NM,AR,KS) Asteraceae
Aphanostephus skirrhobasis var. thalassius USA(FL,LA) Asteraceae
Apios CAN(ON,NB,NS,PE,QC), USA(AL,FL,GA,KS,KY) Fabaceae
Apios americana CAN(NB,NS,PE,QC,ON), USA(AL,FL,GA,KS,KY) Fabaceae
Apium CAN(NS), USA(ID,MA,NJ) Apiaceae
Apium graveolens USA(ID,MA,NJ), CAN(NS) Apiaceae
Apium graveolens var. dulce USA(AZ,CA,FL,LA), CAN(NS) Apiaceae
Apocynum CAN(NS,PE,QC), USA(CO,DE,IL) Apocynaceae
Apocynum androsaemifolium USA(CO,DE,IL), CAN(ON,SK,YT) Apocynaceae
Apocynum cannabinum USA(CO,DE,IL,IA), CAN(ON,SK,NT,BC) Apocynaceae
Apocynum ×floribundum CAN(BC,MB,ON,SK), USA(AR,DC,ID,IN) Apocynaceae
Apodanthera USA(AZ,TX,NM) Cucurbitaceae
Apodanthera undulata USA(NM,AZ) Cucurbitaceae
Apteria USA(AL,FL) Burmanniaceae
Apteria aphylla USA(AL,FL,GA) Burmanniaceae
Aquilegia CAN(AB,NB,NS), USA(CT,MS,MO) Ranunculaceae
Aquilegia chrysantha USA(AZ,TX) Ranunculaceae
Aquilegia chrysantha var. chaplinei USA(NM,TX) Ranunculaceae
Aquilegia chrysantha var. chrysantha USA(AZ,TX) Ranunculaceae
Aquilegia chrysantha var. hinckleyana USA(TX) Ranunculaceae
Aquilegia longissima USA(AZ,TX) Ranunculaceae
Arabidopsis CAN(ON,SK,NT,QC), USA(AL,CA,FL,GA), FRA(SB) Brassicaceae
Arabidopsis thaliana FRA(SB), CAN(QC,BC,ON) Brassicaceae
Arabis CAN(NS,QC,NF,AB), USA(AL,AZ,CA,FL) Brassicaceae
Arabis canadensis CAN(ON,QC), USA(AL,FL,GA,KS,KY) Brassicaceae
Arabis fendleri USA(AZ,NV,TX) Brassicaceae
Arabis fendleri var. fendleri USA(AZ,NV,TX) Brassicaceae
Arabis perennans USA(AZ,CA,NV,TX,UT) Brassicaceae
Arabis petiolaris USA(TX) Brassicaceae
Arachis USA(AL,FL,GA) Fabaceae
Arachis hypogaea USA(AL,FL,GA) Fabaceae
Aralia USA(CO,DE,IL,IA,MD), CAN(ON,SK,YT,NT,LB) Araliaceae
Aralia racemosa CAN(ON,NB,MB,NS), USA(AL,AZ,GA,KS) Araliaceae
Aralia racemosa ssp. bicrenata USA(AZ,TX) Araliaceae
Aralia spinosa USA(CT,MS,MO) Araliaceae
Arbutus CAN(BC), USA(OR,NM,AZ) Ericaceae
Arbutus xalapensis USA(TX,NM) Ericaceae
Arceuthobium CAN(ON,SK,BC,MB,NS), USA(CT,OR,WI,WY,AZ) Viscaceae
Arceuthobium divaricatum USA(AZ,CA) Viscaceae
Arceuthobium douglasii USA(ID,OR,WY,AZ), CAN(BC) Viscaceae
Arceuthobium vaginatum USA(AZ,TX) Viscaceae
Arceuthobium vaginatum ssp. cryptopodum USA(CO,NM) Viscaceae
Arctium FRA(SB), CAN(ON,SK,NS,PE), USA(AL,AZ,CA,GA) Asteraceae
Arctium minus DEN(GL), CAN(ON,SK,AB,NB,NS,PE), FRA(SB) Asteraceae
Arctostaphylos USA(AK,ID,IN,ME,MA), CAN(ON,SK,YT,NT,NU), DEN(GL) Ericaceae
Arctostaphylos pungens USA(AZ,CA,NV) Ericaceae
Arenaria USA(AL,AZ,CA,FL,AK,AR,DC), FRA(SB), DEN(GL) Caryophyllaceae
Arenaria benthamii USA(LA,TX,OK) Caryophyllaceae
Arenaria fendleri USA(CO,NM,WY) Caryophyllaceae
Arenaria fendleri var. fendleri USA(AZ,TX,UT) Caryophyllaceae
Arenaria lanuginosa USA(CO,NM) Caryophyllaceae
Arenaria lanuginosa ssp. lanuginosa USA(AR,AL) Caryophyllaceae
Arenaria lanuginosa ssp. lanuginosa var. lanuginosa USA(NC,SC,TN) Caryophyllaceae
Arenaria lanuginosa ssp. saxosa USA(AZ,CA) Caryophyllaceae
Arenaria livermorensis USA(TX) Caryophyllaceae
Arenaria ludens USA(TX) Caryophyllaceae
Arenaria serpyllifolia CAN(AB,NB,NS,PE), FRA(SB) Caryophyllaceae
Argemone CAN(MB,ON), USA(AL,AZ,CA) Papaveraceae
Argemone aenea USA(TX,NM) Papaveraceae
Argemone albiflora USA(AL,FL,GA,KY,LA) Papaveraceae
Argemone aurantiaca USA(TX) Papaveraceae
Argemone chisosensis USA(TX) Papaveraceae
Argemone mexicana CAN(ON,MB), USA(AL,FL) Papaveraceae
Argemone polyanthemos USA(KS,MT) Papaveraceae
Argemone sanguinea USA(TX) Papaveraceae
Argemone squarrosa USA(OK,CO,NM,KS) Papaveraceae
Argemone squarrosa ssp. glabrata USA(NM,TX) Papaveraceae
Argyrochosma USA(AZ,CA,KS,KY) Pteridaceae
Argyrochosma dealbata USA(KS,KY,NE,TX,IL) Pteridaceae
Argyrochosma limitanea USA(AZ,CA,TX) Pteridaceae
Argyrochosma limitanea ssp. mexicana USA(NM,AZ) Pteridaceae
Argyrochosma microphylla USA(TX,NM) Pteridaceae
Argythamnia USA(AZ,CA,FL) Euphorbiaceae
Argythamnia aphoroides USA(TX) Euphorbiaceae
Argythamnia argyraea USA(TX) Euphorbiaceae
Argythamnia astroplethos USA(TX) Euphorbiaceae
Argythamnia humilis USA(OK,KS,TX) Euphorbiaceae
Argythamnia humilis var. humilis USA(KS,TX) Euphorbiaceae
Argythamnia humilis var. laevis USA(NM,TX) Euphorbiaceae
Argythamnia mercurialina USA(OK,AZ) Euphorbiaceae
Argythamnia mercurialina var. mercurialina USA(OK,AZ,CO) Euphorbiaceae
Argythamnia mercurialina var. pilosissima USA(TX) Euphorbiaceae
Argythamnia neomexicana USA(AZ,CA,NV) Euphorbiaceae
Argythamnia simulans USA(TX) Euphorbiaceae
Ariocarpus USA(TX) Cactaceae
Ariocarpus fissuratus USA(TX) Cactaceae
Arisaema USA(AL,FL,GA,KS,KY,LA,NE), CAN(MB,NS,PE,QC,NB,ON) Araceae
Arisaema dracontium USA(AL,FL,GA,KS,KY), CAN(QC,ON) Araceae
Arisaema triphyllum CAN(ON,MB,NS,PE), USA(AL,FL,GA,KS) Araceae
Arisaema triphyllum ssp. pusillum CAN(ON,QC,NB), USA(DE,IL,IA) Araceae
Arisaema triphyllum ssp. quinatum USA(AL,FL) Araceae
Arisaema triphyllum ssp. triphyllum USA(CT,MS,MO,ND), CAN(ON,NB,MB,NS) Araceae
Aristida CAN(ON,SK,BC,MB), USA(AL,AZ,CA,FL) Poaceae
Aristida adscensionis USA(MO,OK) Poaceae
Aristida arizonica USA(AZ,NV,TX,UT) Poaceae
Aristida basiramea CAN(QC,ON), USA(IN,ME) Poaceae
Aristida desmantha USA(IL,KS) Poaceae
Aristida dichotoma CAN(ON), USA(AL,CA,FL,GA) Poaceae
Aristida dichotoma var. dichotoma CAN(ON), USA(AL,CA,FL,GA) Poaceae
Aristida divaricata USA(CO,NM,OK,AZ) Poaceae
Aristida gypsophila USA(TX) Poaceae
Aristida havardii USA(CO,NM) Poaceae
Aristida lanosa USA(AL,FL,GA) Poaceae
Aristida longespica CAN(ON), USA(CO,DE,IL) Poaceae
Aristida longespica var. geniculata CAN(ON), USA(AR,IN,MA) Poaceae
Aristida longespica var. longespica CAN(ON), USA(AR,DC,IN) Poaceae
Aristida palustris USA(AL,FL,GA,KY) Poaceae
Aristida pansa USA(NM,AZ,TX) Poaceae
Aristida purpurascens var. purpurascens CAN(ON), USA(AL,FL) Poaceae
Aristida purpurascens var. virgata USA(AR,NJ) Poaceae
Aristida purpurea var. fendleriana USA(AZ,CA) Poaceae
Aristida purpurea var. longiseta CAN(SK,BC,MB,AB), USA(ND,OK,OR,SD) Poaceae
Aristida purpurea var. nealleyi USA(AZ,CA) Poaceae
Aristida purpurea var. perplexa USA(NM,AZ) Poaceae
Aristida purpurea var. purpurea USA(AZ,CA) Poaceae
Aristida ramosissima USA(AR,IN) Poaceae
Aristida schiedeana USA(AZ,CA) Poaceae
Aristida schiedeana var. orcuttiana USA(NM,AZ,CA) Poaceae
Aristida spiciformis USA(AL,FL) Poaceae
Aristida ternipes USA(AZ,CA,TX,NM) Poaceae
Aristida ternipes var. gentilis USA(NM,AZ,CA) Poaceae
Aristida ternipes var. ternipes USA(NM,AZ,TX) Poaceae
Aristolochia USA(CT,MS,MO), CAN(QC,ON) Aristolochiaceae
Aristolochia coryi USA(TX) Aristolochiaceae
Aristolochia erecta USA(TX) Aristolochiaceae
Aristolochia pentandra USA(FL,TX) Aristolochiaceae
Aristolochia reticulata USA(OK,LA,TX) Aristolochiaceae
Aristolochia serpentaria USA(DE,IL) Aristolochiaceae
Aristolochia tomentosa USA(AL,FL) Aristolochiaceae
Aristolochia wrightii USA(TX,NM) Aristolochiaceae
Arnoglossum USA(AL,FL), CAN(ON) Asteraceae
Arnoglossum ovatum USA(AL,FL,GA) Asteraceae
Arnoglossum plantagineum USA(AL,GA), CAN(ON) Asteraceae
Aronia FRA(SB), USA(AR,DC,IN,ME) Rosaceae
Aronia arbutifolia USA(AL,FL,GA,KY,LA,NH), CAN(NB,NS,PE,QC,ON) Rosaceae
Artemisia DEN(GL), CAN(ON,SK,YT,NT), USA(AL,AZ,CA,FL) Asteraceae
Artemisia bigelovii USA(CO,NM,AZ,CA,NV) Asteraceae
Artemisia campestris USA(CO,IL,IA), CAN(ON,SK,YT) Asteraceae
Artemisia carruthii USA(AZ,KS,NE,NV) Asteraceae
Artemisia filifolia USA(CO,NM) Asteraceae
Artemisia frigida USA(AZ,KS,MT), CAN(AB,NB,ON) Asteraceae
Artemisia ludoviciana CAN(PE,QC,BC,MB), USA(AZ,CA,FL,GA) Asteraceae
Artemisia ludoviciana ssp. albula USA(CO,NM,AZ) Asteraceae
Artemisia ludoviciana ssp. ludoviciana CAN(BC,MB,ON,SK,NT,PE), USA(CO,DE,IL,IA,MD,MI) Asteraceae
Artemisia ludoviciana ssp. mexicana USA(CO,NM,TN) Asteraceae
Artemisia ludoviciana ssp. redolens USA(NM,AZ,TX) Asteraceae
Arthraxon USA(AL,FL,GA,HI,KS) Poaceae
Arthraxon hispidus USA(AR,DC,IN,MA) Poaceae
Arundinaria USA(AL,FL,GA,KS) Poaceae
Arundinaria gigantea USA(MS,MO) Poaceae
Arundinaria tecta USA(MD,NC) Poaceae
Arundo USA(AR,WV,DE,IL) Poaceae
Arundo donax USA(DE,IL) Poaceae
Asclepias USA(AL,AZ,CA,FL), CAN(ON,SK,AB,NB) Asclepiadaceae
Asclepias amplexicaulis USA(DE,IL,IA) Asclepiadaceae
Asclepias arenaria USA(KS,NE) Asclepiadaceae
Asclepias asperula USA(ID,CO,NM) Asclepiadaceae
Asclepias asperula ssp. asperula USA(CO,NM,AZ) Asclepiadaceae
Asclepias asperula ssp. capricornu USA(AZ,KS) Asclepiadaceae
Asclepias brachystephana USA(NM,AZ) Asclepiadaceae
Asclepias curassavica USA(CA,FL,HI) Asclepiadaceae
Asclepias emoryi USA(TX,NM) Asclepiadaceae
Asclepias engelmanniana USA(CO,IA,NM) Asclepiadaceae
Asclepias glaucescens USA(AZ,TX,NM) Asclepiadaceae
Asclepias incarnata CAN(ON,NB,NS), USA(CO,DE,IL) Asclepiadaceae
Asclepias incarnata ssp. incarnata USA(CT,MO,ND), CAN(NS,PE,QC) Asclepiadaceae
Asclepias incarnata ssp. pulchra USA(DC,ME) Asclepiadaceae
Asclepias involucrata USA(AZ,KS,TX,UT) Asclepiadaceae
Asclepias lanceolata USA(DE,MD) Asclepiadaceae
Asclepias latifolia USA(AZ,CA,KS,NE) Asclepiadaceae
Asclepias linearis USA(TX,MD) Asclepiadaceae
Asclepias longifolia USA(AL,FL) Asclepiadaceae
Asclepias macrotis USA(OK,AZ,TX) Asclepiadaceae
Asclepias nummularia USA(AZ,TX,NM) Asclepiadaceae
Asclepias obovata USA(AL,FL) Asclepiadaceae
Asclepias oenotheroides USA(AZ,LA,TX) Asclepiadaceae
Asclepias perennis USA(AL,FL,GA) Asclepiadaceae
Asclepias prostrata USA(TX) Asclepiadaceae
Asclepias pumila USA(KS,MT) Asclepiadaceae
Asclepias purpurascens USA(CT,MS,MO), CAN(ON) Asclepiadaceae
Asclepias quinquedentata USA(NM,AZ,TX) Asclepiadaceae
Asclepias rubra USA(DE,MD) Asclepiadaceae
Asclepias scaposa USA(TX,NM) Asclepiadaceae
Asclepias speciosa USA(ID,MN,CO,IL,IA), CAN(SK,AB,BC,MB) Asclepiadaceae
Asclepias sperryi USA(TX) Asclepiadaceae
Asclepias stenophylla USA(KS,LA) Asclepiadaceae
Asclepias subverticillata USA(AZ,KS,NE) Asclepiadaceae
Asclepias texana USA(TX) Asclepiadaceae
Asclepias tomentosa USA(AL,FL,GA) Asclepiadaceae
Asclepias tuberosa USA(AL,AZ,CA), CAN(ON,QC) Asclepiadaceae
Asclepias tuberosa ssp. interior CAN(ON,QC), USA(CO,IL) Asclepiadaceae
Asclepias uncialis USA(OK,WY,AZ) Asclepiadaceae
Asclepias uncialis ssp. uncialis USA(AZ,TX,UT,OK,WY) Asclepiadaceae
Asclepias variegata USA(AR,DC), CAN(ON) Asclepiadaceae
Asclepias verticillata USA(CT,MS,MO,ND), CAN(ON,SK,MB) Asclepiadaceae
Asclepias viridiflora USA(CO,DE,IL,IA), CAN(ON,SK,BC,MB) Asclepiadaceae
Asimina USA(AL,FL,GA,KS), CAN(ON) Annonaceae
Asimina parviflora USA(NC,SC) Annonaceae
Asimina triloba CAN(ON), USA(AR,DC,IN) Annonaceae
Asparagus CAN(ON,SK,LB), FRA(SB) Liliaceae
Asparagus officinalis CAN(ON,SK,LB,BC,MB,AB,NB), USA(AR,DC,ID,IN,ME,MA,MN) Liliaceae
Asperula CAN(AB,ON), USA(DC,MA,NY) Rubiaceae
Asperula arvensis CAN(AB,ON), USA(DE,MD,PA) Rubiaceae
Asphodelus USA(CA,TX) Liliaceae
Asphodelus fistulosus USA(CA,TX,NM) Liliaceae
Aspicarpa USA(AZ,TX,NM) Malpighiaceae
Aspicarpa hyssopifolia USA(TX) Malpighiaceae
Aspicarpa longipes USA(TX) Malpighiaceae
Aspicilia CAN(ON,SK,YT), USA(AL,AZ,CA) Hymeneliaceae
Asplenium DEN(GL), CAN(NS,QC,NF,BC) Aspleniaceae
Asplenium palmeri USA(AZ,FL) Aspleniaceae
Asplenium platyneuron USA(AL,AZ,FL,GA), CAN(QC,ON) Aspleniaceae
Asplenium platyneuron var. platyneuron CAN(QC,ON), USA(AL,AZ) Aspleniaceae
Asplenium resiliens USA(AL,AZ) Aspleniaceae
Asplenium septentrionale USA(CO,NM) Aspleniaceae
Asplenium trichomanes CAN(NS,QC,NF,ON,YT,NT,LB), DEN(GL) Aspleniaceae
Asplenium trichomanes ssp. trichomanes USA(CO,DE,IL), CAN(ON,BC,NS) Aspleniaceae
Astragalus CAN(ON,SK,YT,NT,NU), DEN(GL) Fabaceae
Astragalus albulus USA(AZ,TX,NM) Fabaceae
Astragalus allochrous USA(NM,AZ,TX) Fabaceae
Astragalus amphioxys USA(AZ,NV) Fabaceae
Astragalus amphioxys var. amphioxys USA(AZ,NV,TX,UT) Fabaceae
Astragalus brazoensis USA(TX) Fabaceae
Astragalus canadensis CAN(QC,ON,SK,NT), USA(AL,CA,GA,KS) Fabaceae
Astragalus canadensis var. canadensis CAN(ON,SK,NT,QC,AB), USA(CT,MS,MO,ND,OH) Fabaceae
Astragalus ceramicus USA(ND,OK,SD) Fabaceae
Astragalus ceramicus var. filifolius USA(KS,MT) Fabaceae
Astragalus crassicarpus USA(MO,ND,OK,SD), CAN(AB,SK,BC,MB) Fabaceae
Astragalus crassicarpus var. berlandieri USA(TX) Fabaceae
Astragalus crassicarpus var. crassicarpus USA(CO,IA,NM,KS), CAN(AB,BC,MB,SK) Fabaceae
Astragalus crassicarpus var. trichocalyx USA(KS,LA,TX,IL) Fabaceae
Astragalus distortus USA(MS,MO) Fabaceae
Astragalus distortus var. distortus USA(AR,WV) Fabaceae
Astragalus distortus var. engelmannii USA(LA,TX,AR,MS) Fabaceae
Astragalus emoryanus USA(NM,AZ,TX) Fabaceae
Astragalus emoryanus var. emoryanus USA(AZ,TX) Fabaceae
Astragalus emoryanus var. terlinguensis USA(TX) Fabaceae
Astragalus giganteus USA(TX,NM) Fabaceae
Astragalus gracilis USA(ND,OK) Fabaceae
Astragalus gypsodes USA(TX,NM) Fabaceae
Astragalus humistratus USA(NM,AZ,NV,TX) Fabaceae
Astragalus humistratus var. humistratus USA(AZ,TX,NM) Fabaceae
Astragalus lentiginosus CAN(BC), USA(AZ,CA) Fabaceae
Astragalus lentiginosus var. australis USA(AZ,TX) Fabaceae
Astragalus lentiginosus var. diphysus USA(CO,NM) Fabaceae
Astragalus lentiginosus var. higginsii USA(TX) Fabaceae
Astragalus leptocarpus USA(AR,LA,TX,OK) Fabaceae
Astragalus lindheimeri USA(TX,OK) Fabaceae
Astragalus lotiflorus CAN(BC,MB,AB,SK), USA(CO,IA,NM,MN,KS,MT,NE,TX) Fabaceae
Astragalus missouriensis USA(CO,IA,NM), CAN(SK,AB,MB) Fabaceae
Astragalus missouriensis var. missouriensis USA(MN,KS,MT), CAN(MB,SK,AB) Fabaceae
Astragalus mollissimus USA(AZ,KS) Fabaceae
Astragalus mollissimus var. bigelovii USA(AZ,TX,NM) Fabaceae
Astragalus mollissimus var. coryi USA(TX) Fabaceae
Astragalus mollissimus var. earlei USA(NM,TX) Fabaceae
Astragalus mollissimus var. marcidus USA(TX) Fabaceae
Astragalus mollissimus var. mollissimus USA(CO,NM) Fabaceae
Astragalus nuttallianus USA(AZ,CA) Fabaceae
Astragalus nuttallianus var. austrinus USA(OK,CO,NM,AZ,CA) Fabaceae
Astragalus nuttallianus var. macilentus USA(TX,NM) Fabaceae
Astragalus nuttallianus var. nuttallianus USA(KS,LA,TX) Fabaceae
Astragalus nuttallianus var. trichocarpus USA(OK,TX) Fabaceae
Astragalus nuttallianus var. zapatanus USA(TX) Fabaceae
Astragalus pictiformis USA(TX,NM) Fabaceae
Astragalus plattensis USA(ND,OK) Fabaceae
Astragalus pleianthus USA(TX) Fabaceae
Astragalus praelongus USA(AZ,NV) Fabaceae
Astragalus praelongus var. ellisiae USA(CO,NM) Fabaceae
Astragalus puniceus USA(TX,CO) Fabaceae
Astragalus puniceus var. puniceus USA(TX,OK) Fabaceae
Astragalus racemosus CAN(SK), USA(KS,MT) Fabaceae
Astragalus racemosus var. racemosus CAN(SK), USA(ND,OK,SD,WY,MN) Fabaceae
Astragalus reflexus USA(TX) Fabaceae
Astragalus soxmaniorum USA(LA,TX) Fabaceae
Astragalus waterfallii USA(TX,NM) Fabaceae
Astragalus wootonii USA(AZ,CA) Fabaceae
Astragalus wrightii USA(TX) Fabaceae
Astranthium USA(AL,GA,KS) Asteraceae
Astranthium integrifolium USA(AL,GA) Asteraceae
Astranthium integrifolium ssp. ciliatum USA(MO,OK,AR,KS) Asteraceae
Astranthium robustum USA(TX) Asteraceae
Astrolepis USA(AL,AZ,CA) Pteridaceae
Astrolepis cochisensis USA(AZ,CA) Pteridaceae
Astrolepis cochisensis ssp. chihuahuaensis USA(NM,TX) Pteridaceae
Astrolepis cochisensis ssp. cochisensis USA(AZ,CA,TX) Pteridaceae
Astrolepis integerrima USA(AL,AZ) Pteridaceae
Astrolepis sinuata USA(AZ,GA,TX) Pteridaceae
Astrolepis sinuata ssp. mexicana USA(TX,NM) Pteridaceae
Astrolepis sinuata ssp. sinuata USA(NM,AZ) Pteridaceae
Astrolepis windhamii USA(NM,AZ,TX) Pteridaceae
Astrophytum USA(TX) Cactaceae
Astrophytum asterias USA(TX) Cactaceae
Athyrium CAN(NS,PE,QC,NF), USA(AK,AR,DC,ID), DEN(GL) Dryopteridaceae
Athyrium filix-femina DEN(GL), USA(AK,AR,DC,ID), FRA(SB) Dryopteridaceae
Athyrium filix-femina ssp. asplenioides USA(DE,IL,MD) Dryopteridaceae
Atriplex FRA(SB), CAN(ON,SK,YT), USA(AK,DC,ID) Chenopodiaceae
Atriplex acanthocarpa ssp. acanthocarpa USA(NM,AZ) Chenopodiaceae
Atriplex acanthocarpa ssp. coahuilensis USA(TX) Chenopodiaceae
Atriplex argentea USA(AZ,CA,KS,MT), CAN(AB,BC,MB,SK) Chenopodiaceae
Atriplex argentea ssp. argentea CAN(AB,BC,MB,SK), USA(AZ,CA,KS,MT,NE) Chenopodiaceae
Atriplex argentea ssp. argentea var. argentea USA(CO,IL,NM,AZ) Chenopodiaceae
Atriplex argentea ssp. expansa USA(AZ,CA) Chenopodiaceae
Atriplex canescens CAN(AB), USA(CO,NM) Chenopodiaceae
Atriplex canescens var. canescens CAN(AB), USA(AZ,CA) Chenopodiaceae
Atriplex confertifolia USA(AZ,CA) Chenopodiaceae
Atriplex cristata USA(AL,FL,GA,LA) Chenopodiaceae
Atriplex elegans USA(AZ,CA) Chenopodiaceae
Atriplex elegans var. elegans USA(NM,AZ,CA,TX,UT) Chenopodiaceae
Atriplex holocarpa USA(TX) Chenopodiaceae
Atriplex klebergorum USA(TX) Chenopodiaceae
Atriplex matamorensis USA(TX) Chenopodiaceae
Atriplex muricata USA(TX) Chenopodiaceae
Atriplex obovata USA(AZ,TX) Chenopodiaceae
Atriplex patula DEN(GL), CAN(ON,SK,NT,AB,NB), FRA(SB) Chenopodiaceae
Atriplex powellii CAN(SK,AB), USA(ND,OR,SD,WY,CO) Chenopodiaceae
Atriplex prostrata CAN(ON,SK,AB,NB), USA(AL,AZ,CA,KS) Chenopodiaceae
Atriplex rosea CAN(NS,ON,SK), USA(MO,ND,OH) Chenopodiaceae
Atriplex saccaria USA(WY,CO) Chenopodiaceae
Atriplex semibaccata USA(AZ,CA) Chenopodiaceae
Atriplex subspicata USA(AZ,CA) Chenopodiaceae
Atriplex texana USA(TX) Chenopodiaceae
Atriplex wardii USA(TX) Chenopodiaceae
Atriplex wrightii USA(AZ,TX,NM) Chenopodiaceae
Aureolaria CAN(ON), USA(AL,FL,GA,KS) Scrophulariaceae
Aureolaria flava USA(AL,FL,GA,KY), CAN(ON) Scrophulariaceae
Aureolaria flava var. flava USA(AL,FL,GA), CAN(ON) Scrophulariaceae
Aureolaria flava var. macrantha CAN(ON), USA(AL,KY,LA,TX) Scrophulariaceae
Aureolaria grandiflora USA(MO,OK) Scrophulariaceae
Aureolaria grandiflora var. cinerea USA(MO,OK,KS,TX) Scrophulariaceae
Aureolaria grandiflora var. grandiflora USA(TX) Scrophulariaceae
Aureolaria grandiflora var. serrata USA(AR,LA) Scrophulariaceae
Aureolaria pectinata USA(AR,MS,MO,OK) Scrophulariaceae
Aureolaria virginica USA(DC,IN,MA), CAN(ON) Scrophulariaceae
Avena USA(AK,AR,DC,ID), CAN(NS,PE,QC,NF), FRA(SB) Poaceae
Avena fatua USA(AK,ID,IN,ME,MA,MN,NJ,NY), CAN(ON,SK,NT,AB,NB,BC,MB,NS) Poaceae
Avena sativa FRA(SB), USA(AK,AR,DC), CAN(NS,PE,QC) Poaceae
Avicennia USA(CA,FL) Verbenaceae
Avicennia germinans USA(MS) Verbenaceae
Axonopus USA(AL,CA) Poaceae
Axonopus compressus USA(AR,AL,FL) Poaceae
Axonopus furcatus USA(MS,OK) Poaceae
Ayenia USA+(VI) Sterculiaceae
Ayenia filiformis USA(AZ,TX,NM) Sterculiaceae
Ayenia limitaris USA(TX) Sterculiaceae
Ayenia microphylla USA(NM,AZ) Sterculiaceae
Ayenia pilosa USA(NM,TX) Sterculiaceae
Azolla USA(CO,DE,IL,IA,MD), CAN(BC,ON) Azollaceae
Azolla caroliniana USA(AL,FL), CAN(ON,BC) Azollaceae
Azolla filiculoides USA(OR,AZ), CAN(BC) Azollaceae
Azolla microphylla CAN(BC), USA(AZ,CA) Azollaceae
Baccharis USA(AL,AZ,CA,FL) Asteraceae
Baccharis bigelovii USA(AZ,TX) Asteraceae
Baccharis brachyphylla USA(AZ,CA) Asteraceae
Baccharis emoryi USA(AZ,CA,NV) Asteraceae
Baccharis halimifolia USA(DE,MD,NC,PA) Asteraceae
Baccharis havardii USA(TX,NM) Asteraceae
Baccharis neglecta USA(AZ,TX,NM) Asteraceae
Baccharis pteronioides USA(NM,AZ) Asteraceae
Baccharis salicifolia USA(AZ,CA) Asteraceae
Baccharis salicina USA(KS,TX) Asteraceae
Baccharis sarothroides USA(NM,AZ,CA) Asteraceae
Baccharis texana USA(OK,NM) Asteraceae
Baccharis wrightii USA(OK,AZ,KS,TX,UT) Asteraceae
Bacidia CAN(AB,NB,BC,MB), USA(CT,MS,MO,ND) Bacidiaceae
Bacopa CAN(AB), USA(AL,AZ) Scrophulariaceae
Bacopa caroliniana USA(MD,NC) Scrophulariaceae
Bacopa monnieri USA(MD,NC,SC) Scrophulariaceae
Bacopa repens USA(CA,LA) Scrophulariaceae
Bacopa rotundifolia CAN(AB), USA(AL,AZ) Scrophulariaceae
Bahia USA(CO,MD,NM,WY) Asteraceae
Bahia absinthifolia USA(AZ,TX,NM) Asteraceae
Bahia absinthifolia var. absinthifolia USA(AZ,TX,NM) Asteraceae
Bahia absinthifolia var. dealbata USA(AZ,TX) Asteraceae
Bahia bigelovii USA(TX) Asteraceae
Bahia dissecta USA(CO,NM,WY) Asteraceae
Bahia pedata USA(TX,NM) Asteraceae
Baileya USA(NM,AZ) Asteraceae
Baileya multiradiata USA(AZ,CA,NV) Asteraceae
Baptisia USA(AL,FL,GA,KS,KY,LA), CAN(ON) Fabaceae
Baptisia alba USA(IL,IA,MI,NC,SC) Fabaceae
Baptisia alba var. macrophylla USA(KS,KY,LA) Fabaceae
Baptisia australis var. minor USA(IL,IA), CAN(ON) Fabaceae
Baptisia bracteata USA(AL,GA,KS) Fabaceae
Baptisia bracteata var. laevicaulis USA(LA,TX) Fabaceae
Baptisia bracteata var. leucophaea USA(KS,KY,LA) Fabaceae
Baptisia ×bushii USA(LA,TX,OK) Fabaceae
Baptisia nuttalliana USA(LA,TX,AR) Fabaceae
Baptisia sphaerocarpa USA(LA,TX) Fabaceae
Baptisia ×sulphurea USA(LA,TX,OK) Fabaceae
Baptisia ×variicolor USA(TX) Fabaceae
Barbula CAN(ON,SK,YT,NT), DEN(GL) Pottiaceae
Barkleyanthus USA(NM,AZ,TX) Asteraceae
Barkleyanthus salicifolius USA(AZ,TX,NM) Asteraceae
Bartlettia USA(NM,TX) Asteraceae
Bartlettia scaposa USA(NM,TX) Asteraceae
Bartonia CAN(ON,NB,NS,QC), FRA(SB) Gentianaceae
Bartonia paniculata USA(AR,DC,ME,MA), FRA(SB) Gentianaceae
Bartonia paniculata ssp. paniculata USA(CT,MS), CAN(ON) Gentianaceae
Bartonia texana USA(TX) Gentianaceae
Bartonia verna USA(NC,SC,VA) Gentianaceae
Bassia USA(CT,MS,MO,ND,OH,OK), CAN(ON,SK,QC,BC,MB,AB) Chenopodiaceae
Bassia americana USA(CO,NM) Chenopodiaceae
Bassia hyssopifolia USA(OR,SD,WY,ID,ME), CAN(BC,AB) Chenopodiaceae
Bastardia USA(TX) Malvaceae
Bastardia viscosa USA+(VI) Malvaceae
Bastardia viscosa var. viscosa USA(TX) Malvaceae
Batesimalva USA(TX) Malvaceae
Batesimalva violacea USA(TX) Malvaceae
Batis USA(AL,CA) Bataceae
Batis maritima USA(MS) Bataceae
Bauhinia USA(CA,FL,HI) Fabaceae
Bauhinia galpinii USA(CA,TX) Fabaceae
Bauhinia lunarioides USA(TX) Fabaceae
Bauhinia monandra USA(FL,HI,TX) Fabaceae
Bauhinia purpurea USA(FL,TX) Fabaceae
Bauhinia variegata USA(CA,FL,LA) Fabaceae
Bebbia USA(NM,AZ) Asteraceae
Bebbia juncea USA(AZ,CA,NV) Asteraceae
Bebbia juncea var. aspera USA(AZ,CA) Asteraceae
Belamcanda USA(DE,IL,IA) Iridaceae
Belamcanda chinensis USA(AR,DC) Iridaceae
Bellardia USA(CA,LA) Scrophulariaceae
Bellardia trixago USA(CA,LA) Scrophulariaceae
Berchemia USA(AR,AL,FL) Rhamnaceae
Berchemia scandens USA(IL,MD) Rhamnaceae
Bergia USA(CA,KS,LA,MT) Elatinaceae
Bergia texana USA(CO,IL) Elatinaceae
Berlandiera USA(MS,MO,OK) Asteraceae
Berlandiera betonicifolia USA(AR,KS) Asteraceae
Berlandiera lyrata USA(OK,AZ,KS) Asteraceae
Berlandiera pumila USA(NC,SC,AL) Asteraceae
Berlandiera pumila var. pumila USA(AL,FL) Asteraceae
Berlandiera pumila var. scabrella USA(LA,TX) Asteraceae
Bernardia USA(NM,AZ) Euphorbiaceae
Bernardia myricifolia USA(AZ,CA) Euphorbiaceae
Bernardia obovata USA(TX,NM) Euphorbiaceae
Berula USA(AZ,CA), CAN(BC,ON) Apiaceae
Berula erecta CAN(ON,BC), USA(AZ,CA,KS) Apiaceae
Beta USA(ME,MA) Chenopodiaceae
Beta vulgaris USA(MI,NC) Chenopodiaceae
Betula DEN(GL), CAN(ON,SK,YT), USA(AK,AR,DC) Betulaceae
Betula nigra USA(AR,DC,IN,MA,MN) Betulaceae
Bidens USA(AL,AZ,CA,FL,GA,HI,KS), CAN(ON,SK,YT,NT,NU,AB,NB) Asteraceae
Bidens aristosa CAN(ON), USA(CO,DE) Asteraceae
Bidens bigelovii USA(OK,CO,NM) Asteraceae
Bidens bigelovii var. bigelovii USA(OK,CO) Asteraceae
Bidens bipinnata USA(AL,AZ), CAN(ON,NB) Asteraceae
Bidens cernua USA(AL,AZ,CA,GA), CAN(ON,SK,YT,NT) Asteraceae
Bidens discoidea USA(DE,IL,IA), CAN(NS,QC,ON) Asteraceae
Bidens frondosa USA(AL,AZ,CA,FL,GA), CAN(NS,PE,QC,NF,BC) Asteraceae
Bidens laevis USA(AR,DC) Asteraceae
Bidens leptocephala USA(AZ,TX) Asteraceae
Bidens mitis USA(DE,MD,NC) Asteraceae
Bidens pilosa USA(UM,AL), CAN(ON,QC) Asteraceae
Bidens tenuisecta USA(AZ,TX) Asteraceae
Bidens tripartita CAN(ON,AB,NB,BC), USA(AL,CA,GA,KS) Asteraceae
Bifora USA(TX,AR,NJ,RI,OK,MD) Apiaceae
Bifora americana USA(TX,AR,OK) Apiaceae
Bigelowia USA(MS,NC) Asteraceae
Bigelowia nudata USA(AL,FL,GA) Asteraceae
Bigelowia nudata ssp. nudata USA(AL,FL) Asteraceae
Bigelowia nuttallii USA(AL,FL) Asteraceae
Bignonia USA(AL,FL,GA) Bignoniaceae
Billieturnera USA(TX) Malvaceae
Billieturnera helleri USA(TX) Malvaceae
Blechnum USA(OR), CAN(BC) Blechnaceae
Blechnum occidentale USA(FL,GA) Blechnaceae
Blepharidachne USA(CA,NV,TX,UT,ID) Poaceae
Blepharidachne bigelovii USA(NM,TX) Poaceae
Blepharoneuron USA(AZ,TX) Poaceae
Blepharoneuron tricholepis USA(CO,NM) Poaceae
Blutaparon USA(FL) Amaranthaceae
Blutaparon vermiculare USA(FL,HI,LA) Amaranthaceae
Boehmeria USA(AL,AZ,CA,FL), CAN(ON,QC,NB) Urticaceae
Boehmeria cylindrica CAN(ON,QC,NB), USA(CT,MS,MO,OH) Urticaceae
Boehmeria nivea USA(MS,MD,SC) Urticaceae
Boerhavia USA(CO,MD,NM,NC) Nyctaginaceae
Boerhavia anisophylla USA(TX) Nyctaginaceae
Boerhavia coccinea USA(AL,AZ,CA) Nyctaginaceae
Boerhavia diffusa USA(AL,CA,FL) Nyctaginaceae
Boerhavia erecta USA(AL,AZ) Nyctaginaceae
Boerhavia gracillima USA(AZ,TX,NM) Nyctaginaceae
Boerhavia intermedia USA(NM,AZ) Nyctaginaceae
Boerhavia linearifolia USA(NM,TX) Nyctaginaceae
Boerhavia mathisiana USA(TX) Nyctaginaceae
Boerhavia purpurascens USA(NM,AZ,TX) Nyctaginaceae
Boerhavia scandens USA(NM) Nyctaginaceae
Boerhavia spicata USA(NM,AZ,TX) Nyctaginaceae
Boerhavia wrightii USA(NM,AZ) Nyctaginaceae
Bolboschoenus FRA(SB), USA(AK,AR,DC,ID,IN) Cyperaceae
Bolboschoenus maritimus FRA(SB), USA(CO,IL,IA,MI) Cyperaceae
Bolboschoenus maritimus ssp. paludosus CAN(ON,SK,NT,BC,MB), USA(AK,ID,ME,MA,MN) Cyperaceae
Bolboschoenus robustus USA(AL,CA) Cyperaceae
Boltonia USA(CT,MS,MO,ND,OH), CAN(SK,MB) Asteraceae
Boltonia asteroides CAN(SK,MB), USA(DE,IL,IA) Asteraceae
Boltonia asteroides var. asteroides USA(MS,AL,FL) Asteraceae
Boltonia diffusa USA(AR,AL) Asteraceae
Boltonia diffusa var. diffusa USA(MS,MO) Asteraceae
Bommeria USA(AZ,TX) Pteridaceae
Bonamia USA(FL,HI,TX) Convolvulaceae
Bonamia ovalifolia USA(TX) Convolvulaceae
Bonamia repens USA(TX) Convolvulaceae
Borrichia USA(MS) Asteraceae
Borrichia frutescens USA(AL,FL,GA) Asteraceae
Bothriochloa USA(AL,AZ) Poaceae
Bothriochloa alta USA(TX,NM) Poaceae
Bothriochloa barbinodis USA(OK,CO) Poaceae
Bothriochloa bladhii USA(MO,OH,OK,CO) Poaceae
Bothriochloa edwardsiana USA(TX) Poaceae
Bothriochloa exaristata USA(LA,TX) Poaceae
Bothriochloa hybrida USA(GA,LA) Poaceae
Bothriochloa ischaemum USA(AL,AZ) Poaceae
Bothriochloa ischaemum var. ischaemum USA(NM,TX) Poaceae
Bothriochloa ischaemum var. songarica USA(AR,NY,CO) Poaceae
Bothriochloa laguroides USA(AL,AZ) Poaceae
Bothriochloa laguroides ssp. torreyana USA(AR,IN) Poaceae
Bothriochloa longipaniculata USA(MS,LA,TX) Poaceae
Bothriochloa pertusa USA(MS) Poaceae
Bothriochloa saccharoides USA(TX) Poaceae
Bothriochloa springfieldii USA(AZ,LA) Poaceae
Bothriochloa wrightii USA(NM,AZ) Poaceae
Botrychium USA(AK,AR,DC,ID,IN), CAN(AB,NB,ON,SK,YT), FRA(SB) Ophioglossaceae
Botrychium biternatum USA(AL,FL,GA) Ophioglossaceae
Botrychium dissectum USA(AR,DC,IN), CAN(NB,ON,NS) Ophioglossaceae
Botrychium lunarioides USA(AL,FL,GA) Ophioglossaceae
Botrychium virginianum USA(CO,DE,IL,IA), CAN(ON,SK,YT,NT) Ophioglossaceae
Bouchea USA(NM) Verbenaceae
Bouchea linifolia USA(NM,TX) Verbenaceae
Bouchea prismatica USA(AL,AZ,TX) Verbenaceae
Bouchea spathulata USA(TX) Verbenaceae
Bouchetia USA(TX,MS) Solanaceae
Bouchetia erecta USA(TX,MS) Solanaceae
Bougainvillea USA+(VI) Nyctaginaceae
Bougainvillea glabra USA+(VI) Nyctaginaceae
Bouteloua CAN(BC,MB,ON,SK,AB), USA(CT,MS,MO,ND,OH) Poaceae
Bouteloua aristidoides USA(AZ,CA) Poaceae
Bouteloua aristidoides var. aristidoides USA(AZ,CA) Poaceae
Bouteloua barbata USA(UT,CO,MD) Poaceae
Bouteloua breviseta USA(NM,TX) Poaceae
Bouteloua chondrosioides USA(AZ,TX) Poaceae
Bouteloua curtipendula USA(AR,DC,ID,IN), CAN(BC,MB,AB,ON) Poaceae
Bouteloua curtipendula var. curtipendula CAN(ON,SK,AB), USA(CT,MS,MO) Poaceae
Bouteloua eriopoda USA(OK,WY,AZ,CA,KS,NV) Poaceae
Bouteloua gracilis CAN(ON,SK,BC,MB,AB), USA(ID,ME,MA,MN,NY,CO) Poaceae
Bouteloua hirsuta USA(AZ,FL) Poaceae
Bouteloua hirsuta var. hirsuta USA(AR,ME,MN) Poaceae
Bouteloua hirsuta var. pectinata USA(OK,TX) Poaceae
Bouteloua kayi USA(TX) Poaceae
Bouteloua parryi USA(AZ,TX) Poaceae
Bouteloua ramosa USA(TX) Poaceae
Bouteloua repens USA(AZ,TX) Poaceae
Bouteloua rigidiseta USA(LA,TX) Poaceae
Bouteloua simplex USA(AZ,KS) Poaceae
Bouteloua trifida var. burkii USA(NM,TX) Poaceae
Bouteloua trifida var. trifida USA(AZ,CA,NV) Poaceae
Bouteloua uniflora USA(TX) Poaceae
Bouteloua warnockii USA(TX,NM) Poaceae
Bouvardia USA(AZ,TX) Rubiaceae
Bouvardia ternifolia USA(AZ,TX) Rubiaceae
Bowlesia USA(AL,AZ) Apiaceae
Bowlesia incana USA(AL,AZ,CA,FL) Apiaceae
Brachiaria USA(MD,VA) Poaceae
Brachiaria eruciformis USA(MD,VA) Poaceae
Brachyelytrum CAN(ON,NB,NS,PE,QC), USA(AR,DC,IN,ME,MA) Poaceae
Brachyelytrum erectum USA(CT,MS,MO), CAN(NB,ON,NS) Poaceae
Brachypodium USA(OR,CA) Poaceae
Brachypodium distachyon USA(CA,HI) Poaceae
Brasenia USA(AL,CA,FL), CAN(ON,AB,NB) Cabombaceae
Brasenia schreberi USA(AL,CA,FL,GA), CAN(BC,MB,NS,QC) Cabombaceae
Brassica DEN(GL), USA(AL,AZ,CA,FL) Brassicaceae
Brassica juncea CAN(ON,SK,NT,NS,PE), USA(AK,AR,DC,ID,IN) Brassicaceae
Brassica nigra USA(CO,DE,IL,IA), CAN(ON,SK,AB,NB) Brassicaceae
Brassica oleracea CAN(ON,PE,QC), USA(CT,MO,OH) Brassicaceae
Brassica rapa DEN(GL), USA(AL,AZ,CA) Brassicaceae
Brassica rapa var. amplexicaulis USA(HI,TX) Brassicaceae
Brassica tournefortii USA(AZ,CA,NV) Brassicaceae
Brazoria USA(TX) Lamiaceae
Brazoria arenaria USA(TX) Lamiaceae
Brazoria enquistii USA(TX) Lamiaceae
Brazoria truncata USA(TX) Lamiaceae
Brazoria truncata var. pulcherrima USA(TX) Lamiaceae
Brazoria truncata var. truncata USA(TX) Lamiaceae
Brickellia USA(AR,DC), CAN(BC,AB) Asteraceae
Brickellia baccharidea USA(NM,AZ) Asteraceae
Brickellia brachyphylla USA(AZ,KS,TX,CO,NM) Asteraceae
Brickellia californica USA(OK,OR) Asteraceae
Brickellia californica var. californica USA(ID,CO) Asteraceae
Brickellia conduplicata USA(TX) Asteraceae
Brickellia coulteri USA(AZ,TX) Asteraceae
Brickellia cylindracea USA(TX) Asteraceae
Brickellia dentata USA(TX) Asteraceae
Brickellia eupatorioides USA(CO,DE) Asteraceae
Brickellia eupatorioides var. chlorolepis USA(OK,WY,AZ,TX) Asteraceae
Brickellia eupatorioides var. corymbulosa USA(KS,KY,MT) Asteraceae
Brickellia eupatorioides var. eupatorioides USA(MS,MO) Asteraceae
Brickellia eupatorioides var. gracillima USA(TX) Asteraceae
Brickellia eupatorioides var. texana USA(IL,KS) Asteraceae
Brickellia grandiflora CAN(AB,BC), USA(AZ,CA,KS) Asteraceae
Brickellia hinckleyi USA(TX) Asteraceae
Brickellia hinckleyi var. hinckleyi USA(TX) Asteraceae
Brickellia hinckleyi var. terlinguensis USA(TX) Asteraceae
Brickellia laciniata USA(TX,NM) Asteraceae
Brickellia lemmonii USA(NM,AZ) Asteraceae
Brickellia lemmonii var. lemmonii USA(AZ,TX,NM) Asteraceae
Brickellia parvula USA(NM,AZ,TX) Asteraceae
Brickellia venosa USA(AZ,TX,NM) Asteraceae
Brickellia veronicifolia USA(TX,NM) Asteraceae
Brickellia veronicifolia var. petrophila USA(TX) Asteraceae
Brickelliastrum USA(NM,AZ) Asteraceae
Brickelliastrum fendleri USA(NM,AZ,TX) Asteraceae
Briza USA(CO,DE,IL,MD,MI,NM), CAN(ON,NS,QC,NF,BC,AB) Poaceae
Briza minor USA(AR,ID), CAN(AB,BC) Poaceae
Bromus USA(AK,AR,DC,ID,IN,ME), FRA(SB), CAN(ON,SK,YT,NT,NU,LB) Poaceae
Bromus anomalus USA(TX,NM), CAN(SK,BC) Poaceae
Bromus arizonicus USA(AZ,CA,NV) Poaceae
Bromus arvensis USA(CT,MS,MO,ND,OH), CAN(BC,MB,AB,ON,SK) Poaceae
Bromus catharticus USA(CO,IL,IA,MD), CAN(ON,LB,AB) Poaceae
Bromus ciliatus USA(AK,ID,IN,ME), CAN(BC,MB,NS,PE) Poaceae
Bromus ciliatus var. richardsonii CAN(BC,YT,AB), USA(CO,NM,AK,ID) Poaceae
Bromus diandrus USA(AZ,CA,GA,HI), CAN(BC) Poaceae
Bromus diandrus ssp. rigidus CAN(BC), USA(CO,DE,IL) Poaceae
Bromus hordeaceus FRA(SB), DEN(GL), USA(AK,AR,ID) Poaceae
Bromus hordeaceus ssp. divaricatus USA(CA,HI) Poaceae
Bromus hordeaceus ssp. hordeaceus CAN(AB,NB,ON), DEN(GL), USA(AK,AR,ID) Poaceae
Bromus inermis CAN(ON,SK,YT), USA(AK,AR,DC), DEN(GL) Poaceae
Bromus inermis ssp. inermis FRA(SB), USA(AK,AR,DC,ID), CAN(AB,NB,BC,MB) Poaceae
Bromus inermis ssp. inermis var. inermis CAN(ON,SK,YT,NT), DEN(GL), USA(AZ,CA,GA,KS) Poaceae
Bromus lanatipes USA(AZ,TX,OK,CO) Poaceae
Bromus lanceolatus USA(LA,TX), CAN(AB) Poaceae
Bromus nottowayanus USA(AL,GA), CAN(ON) Poaceae
Bromus polyanthus USA(AZ,CA), CAN(BC) Poaceae
Bromus polyanthus var. polyanthus USA(AZ,CA,MT), CAN(BC) Poaceae
Bromus porteri CAN(MB,SK), USA(ID,AZ,CA,MT,NE) Poaceae
Bromus pubescens USA(AR,IN,ME,MA), CAN(ON,MB,QC) Poaceae
Bromus racemosus USA(AK,CT,MS,MO), CAN(NS,PE,QC,NF) Poaceae
Bromus rubens USA(MD,NM,SC) Poaceae
Bromus secalinus CAN(BC,NS,QC), USA(CT,MS,MO) Poaceae
Bromus secalinus var. secalinus USA(CO,DE,IL,IA,MD), CAN(NS,QC,BC,ON,YT) Poaceae
Bromus sterilis CAN(ON,BC), USA(AL,AZ,CA) Poaceae
Bromus texensis USA(TX) Poaceae
Brongniartia USA(TX) Fabaceae
Brongniartia minutifolia USA(TX) Fabaceae
Broussonetia USA(AL,FL) Moraceae
Broussonetia papyrifera USA(AR,DC,IN) Moraceae
Brunnichia USA(AL,FL,GA) Polygonaceae
Brunnichia ovata USA(AL,FL,GA,KY,LA) Polygonaceae
Buchnera CAN(ON), USA(DE,IL) Scrophulariaceae
Buchnera americana CAN(ON), USA(DE,IL) Scrophulariaceae
Buddleja USA(AL,AZ,CA), CAN(BC) Buddlejaceae
Buddleja lindleyana USA(AL,FL) Buddlejaceae
Buddleja marrubiifolia USA(TX) Buddlejaceae
Buddleja racemosa USA(TX) Buddlejaceae
Buddleja racemosa ssp. incana USA(TX) Buddlejaceae
Buddleja racemosa ssp. racemosa USA(TX) Buddlejaceae
Buddleja scordioides USA(AZ,TX,NM) Buddlejaceae
Buddleja sessiliflora USA(AZ,TX) Buddlejaceae
Buglossoides USA(AL,CA,FL,GA), CAN(ON,BC,MB,NS) Boraginaceae
Buglossoides arvensis USA(AL,CA,FL,GA,KS), CAN(ON,BC,MB,NS,QC) Boraginaceae
Bulbostylis USA(AL,AZ,CA,FL), CAN(ON,NS,QC,NB) Cyperaceae
Bulbostylis barbata USA(MS,NC) Cyperaceae
Bulbostylis capillaris CAN(NS,QC,ON,NB), USA(DE,IL,IA,MD,MI) Cyperaceae
Bulbostylis capillaris ssp. capillaris CAN(NS,QC,ON,NB), USA(AL,AZ,CA,FL) Cyperaceae
Bulbostylis ciliatifolia USA(NC,SC) Cyperaceae
Bulbostylis ciliatifolia var. ciliatifolia USA(MS,OK) Cyperaceae
Bulbostylis ciliatifolia var. coarctata USA(AL,FL) Cyperaceae
Bulbostylis juncoides USA(NM,AZ) Cyperaceae
Bupleurum USA(AL,AZ,CA,FL), CAN(BC,ON,YT,NT) Apiaceae
Bupleurum lancifolium USA(AZ,CA) Apiaceae
Bupleurum rotundifolium USA(DE,IL,MD), CAN(NB,ON,QC) Apiaceae
Burmannia USA(AL,FL) Burmanniaceae
Burmannia biflora USA(MS,AL,FL) Burmanniaceae
Burmannia capitata USA(NC,SC,AL) Burmanniaceae
Cabomba USA(AL,CA,FL), CAN(ON) Cabombaceae
Cabomba caroliniana CAN(ON), USA(CT,MS,MO,OH) Cabombaceae
Cabomba caroliniana var. caroliniana CAN(ON), USA(AL,CA) Cabombaceae
Caesalpinia USA(AZ,CA) Fabaceae
Caesalpinia bonduc USA+(VI) Fabaceae
Caesalpinia caudata USA(TX) Fabaceae
Caesalpinia gilliesii USA(NM,OK,AZ,CA) Fabaceae
Caesalpinia mexicana USA(AZ,CA) Fabaceae
Caesalpinia phyllanthoides USA(TX) Fabaceae
Caesalpinia pulcherrima USA(AZ,CA) Fabaceae
Caesalpinia wootonii USA(TX) Fabaceae
Cakile CAN(ON,LB,NB,NS,PE,QC), FRA(SB), USA(AK,IN,ME,MA,NJ,NY) Brassicaceae
Cakile constricta USA(AL,FL) Brassicaceae
Cakile geniculata USA(LA,TX) Brassicaceae
Cakile lanceolata USA+(VI) Brassicaceae
Cakile lanceolata ssp. pseudoconstricta USA(AL,FL) Brassicaceae
Cakile maritima USA(OR,AL), CAN(BC) Brassicaceae
Calamovilfa USA(MO,ND,OH,OK,SD,WI), CAN(BC,MB,ON,SK,AB) Poaceae
Calibrachoa USA(AL,AZ,CA) Solanaceae
Calibrachoa parviflora USA(AL,AZ,CA) Solanaceae
Calliandra USA(AZ,CA) Fabaceae
Calliandra biflora USA(TX) Fabaceae
Calliandra conferta USA(TX) Fabaceae
Calliandra eriophylla USA(AZ,CA) Fabaceae
Calliandra humilis USA(AZ,TX) Fabaceae
Calliandra humilis var. humilis USA(AZ,TX,NM) Fabaceae
Calliandra iselyi USA(TX) Fabaceae
Callicarpa USA(AL,FL) Verbenaceae
Callicarpa americana USA(AL,FL,GA) Verbenaceae
Callirhoe USA(AL,AZ,CO) Malvaceae
Callirhoe alcaeoides USA(AL,KS,KY) Malvaceae