NOTICE: The WeedUS Database of plants invading natural areas in the U.S. (including Hawaii) has been compiled from a wide variety of sources including publications, reports, surveys, and occasional personal observations from experts in the field. Sources include the National Park Service and other federal agencies, state and local natural resource departments, The Nature Conservancy, state and regional Exotic Pest Plant Councils and related organizations, universities and others. Sources for each plant listed are provided on the table -- click on the REFERENCE(S) header to go to a legend for the source codes. The current list includes over 1,000 plants and is updated as needed. Please contact Jil Swearingen (jil_swearingen@nps.gov) regarding any errors, omissions or potential additions to the list.

The purpose of this list is informational and educational and it is neither intended nor approved for use as a regulatory tool. Many of the species on this list are economically important horticultural plants but sometimes cause problems when they escape and establish in natural areas.

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Plant Conservation Aliance - Alien Plant Working Group's

Alien Plant Invaders of Natural Areas
By Scientific Name
All species names (A-Z)
SCIENTIFIC NAME COMMON NAME STATES NATIONAL PARKS REFERENCE(S) FACT SHEET
Abrus precatorius rosary pea; crab's eyes FL   ABS, FC, FLEPPC Look-up Abrus precatorius on USDA PLANTS Volunteer
Abutilon grandifolium Hairy abutilon; ma'o HI HALE JS Look-up Abutilon grandifolium on USDA PLANTS Volunteer
Abutilon theophrasti velvetleaf; Indian mallow: butterprint; pie-maker MI, OR, VA, WA   AAPR, FC, JA, PNWEPPC Look-up Abutilon theophrasti on USDA PLANTS Volunteer
Acacia auriculiformis earleaf acacia FL   FC, FLEPPC, Look-up Acacia auriculiformis on USDA PLANTS In Progress
Acacia longifolia Sydney golden wattle CA, FL   SR Look-up Acacia longifolia on USDA PLANTS Volunteer
Acacia mearnsii black wattle HI HALE JS, TNC, UHI Look-up Acacia mearnsii on USDA PLANTS Volunteer
Acacia melanoxylon Australian blackwood; blackwood acacia CA, HI HALE FC, JS, SR, TNC, UHI Look-up Acacia melanoxylon on USDA PLANTS Volunteer
Acacia retinodes water wattle; wirilda CA, FL   SR Look-up Acacia retinodes on USDA PLANTS Volunteer
Acacia confusa small Philippine wattle HI   UHI Look-up Acacia confusa on USDA PLANTS Volunteer
Acer campestre hedge maple; field maple OH   SR Look-up Acer campestre on USDA PLANTS Volunteer
Acer ginnala Amur maple CT, IL, MA, MO, NY, VT, WI   CIPWG, EU, FC, MODOC, SR, WIDNR Look-up Acer ginnala on USDA PLANTS In Progress
Acer palmatum Japanese maple VA, DC ROCR JS Look-up Acer palmatum on USDA PLANTS Volunteer
Acer platanoides Norway maple CT, DC, DE, IL, IN, MA, MD, ME, MI, NH, NJ, NY, OR, PA, TN, VA, VT, WI, WV ACAD, ANTI, CHOH, COLO, EISE, GETT, HAFE, MONO, ROCR AAPR, CIPWG, CTDEP, DNREC, EU, FC, INPAWS, IPCNYS, MDCES, MDDNR, NHISC, NJDA, JS, NPSO, PADCNR, PERT, SR, TL, TNC, VADCR, WIDNR Look-up Acer platanoides on USDA PLANTS In Progress
Acer pseudoplatanus Sycamore maple; mock plane CT, PA   CIPWG, FC, PERT, PADCNR, TNC, Look-up Acer pseudoplatanus on USDA PLANTS Volunteer
Acroptilon repens hardheads AZ, CO, ID, NV, OR, SD, UT, WA, WI, WY BADL, CANY, DINO, GLCA, GRCA, LAME, THRO, YELL FC, JS, PNWEPPC, TNC, WIDNR Look-up Acroptilon repens on USDA PLANTS Volunteer
Adenanthera pavonina red sandal wood, coralwood FL   FC, SR Look-up Adenanthera pavonina on USDA PLANTS Volunteer
Adiantum hispidulum rough maidenhair HI HALE JS Look-up Adiantum hispidulum on USDA PLANTS Volunteer
Adiantum raddianum Delta maidenhair HI HALE JS Look-up Adiantum raddianum on USDA PLANTS Volunteer
Aegilops cylindrica jointed goatgrass AZ, OK, OR, WA GRCA FC, JS, PNWEPPC, TNC Look-up Aegilops cylindrica on USDA PLANTS Volunteer
Aegopodium podagraria goutweed, bishop's weed, ground elder CT, MI, NJ, PA, VT, WI   AAPR, CIPWG, FC, NJDA, PERT, PADCNR, VTDEC, WIDNR Look-up Aegopodium podagraria on USDA PLANTS Yes
Aesculus hippocastanum horse chestnut GA, ME, OR, PA, WI   FC, NPSO, SR Look-up Aesculus hippocastanum on USDA PLANTS Volunteer
Agave sisalana hemp-plant; sisal hemp HI HALE FC, JS Look-up Agave sisalana on USDA PLANTS Volunteer
Ageratina adenophora sticky snakeroot; Crofton weed HI HALE FC, JS Look-up Ageratina adenophora on USDA PLANTS Volunteer
Ageratina riparia spreading snake-root; hamakua pa'makani HI HALE JS Look-up Ageratina riparia on USDA PLANTS Volunteer
Ageratum conyzoides maile-hohono HI HALE JS Look-up Ageratum conyzoides on USDA PLANTS Volunteer
Agropyron cristatum crested wheatgrass NV, UT LAME, THRO, YELL FC, JS Look-up Agropyron cristatum on USDA PLANTS Volunteer
Agrostis capillaris colonial beatgrass OR, TN, VA, WA   FC, JS, PNWEPPC, TNC, VADCR Look-up Agrostis capillaris on USDA PLANTS Volunteer
Agrostis gigantea redtop NY, OR, TN, VA COLO JS, TNC, VADCR Look-up Agrostis gigantea on USDA PLANTS Volunteer
Agrostis stolonifera creeping bentgrass AZ, CA, HI, NV, OR, TX, UT, WA DEVA, GLCA, HALE, LAME, YELL FC, JS, PNWEPPC Look-up Agrostis stolonifera on USDA PLANTS Volunteer
Ailanthus altissima tree-of-heaven; stinking shumac; copal tree; varnish tree AZ, CA, CT, DC, DE, FL, HI, IN, KY, LA, MA, MD, MI, MO, NC, NH, NJ, NM, NY, OH, OK, OR, PA, RI, SC, TN, VA, WA, WI, WV ANTI, APCO, BLRI, BOWA, CATO, CHOH, COLO, DEVA, DEWA, EISE, FRSP, GETT, GEWA, GRCA, GRSM, HAFE, INDU, KIMO, MANA, MONO, NACE, PETE, PRWI, RICH, ROCR, SHEN, STRI, VICK, YOSE AAPR, CAEPPC, CIPWG, DNREC, FC, UHI, INPAWS, KYEPPC, MDCES, MDDNR, MODOC, NCDPR, NHISC, NJDA, JS, NPSO, PADCNR, PERT, PNWEPPC, SR, TNC, TL, TNEPPC, VADCR, WIDNR Look-up Ailanthus altissima on USDA PLANTS Yes
Aira caryophyllea silver hairgrass CT, HI HALE, YELL CIPWG, JS Look-up Aira caryophyllea on USDA PLANTS Volunteer
Ajuga reptans creeping bugleweed; carpet bugleweed MD, TN, VA COLO MDCES, MDDNR, JS, VADCR Look-up Ajuga reptans on USDA PLANTS Volunteer
Akebia quinata five-leaf akebia; chocolate vine DC, MD, NJ, KY, PA, VA COLO, DEWA, ROCR KYEPPC, NJDA, JS, PADCNR, PERT, VADCR Look-up Akebia quinata on USDA PLANTS Yes
Albizia julibrissin silk tree; mimosa DC, FL, GA, KY, LA, MA, NC, NJ, SC, TN, VA, WV BLRI, COLO, GRSM, HAFE, KIMO, PETE, PRWI, ROCR, STRI ABS, FC, FLEPPC, GAEPPC, KYEPPC, NCDEHNR, NJDA, JS, SR, TNEPPC, VADCR Look-up Albizia julibrissin on USDA PLANTS Yes
Albizia lebbeck woman's tongue tree; lebbeck tree FL   FC, FLEPPC, SR, Look-up Albizia lebbeck on USDA PLANTS In Progress
Alcea rosea hollyhock CA DEVA JS Look-up Alcea rosea on USDA PLANTS Volunteer
Alhagi maurorum camel thorn AZ, CO, OR, UT, WA GLCA, GRCA, WUPA AZJS, FC, JS, PNWEPPC, TNC Look-up Alhagi maurorum on USDA PLANTS In Progress
Allamanda cathartica golden-trumpet; common allamanda FL   SR Look-up Allamanda cathartica on USDA PLANTS Volunteer
Alliaria petiolata garlic mustard AK, CT, DC, DE, GA, IA, IL, IN, KY, MA, MD, ME, MI, MO, NC, NH, NJ, NY, OH, OR, PA, TN, VA, VT, WI, WV ACAD, ANTI, BLRI, CHOH, CATO, DEWA, GRSM, GWMP, HAFE, INDU, MANA, MIMA, MONO, NACE, ROCR, SACN, SHEN, STRI, WEFA AAPR, CIPWG, DNREC, FC, FSAK, INPAWS, IPCNYS, KYEPPC, MDCES, MDDNR, MODOC, NHISC, NJDA, JS, NPSO, NWRA, PADCNR, PERT, TL, TNC, TNEPPC, VADCR, VTDEC, WI, WIDNR Look-up Alliaria petiolata on USDA PLANTS Yes
Allium vineale field garlic, crow garlic, wild garlic CT, MD, NC, NJ, PA, TN, VA, WV ANTI, COLO, HAFE, MONO, STRI CIPWG, FC, MDDNR, NJDA, JS, PERT, VADCR Look-up Allium vineale on USDA PLANTS Volunteer
Alnus glutinosa black alder; European alder IL, IN, MI, NY, PA, WI   AAPR, FC, INPAWS, SR, WIDNR Look-up Alnus glutinosa on USDA PLANTS Volunteer
Alopecurus myosuroides slender meadow foxtail OR, WA   PNWEPPC Look-up Alopecurus myosuroides on USDA PLANTS Volunteer
Alpinia purpurata red ginger HI HALE JS Look-up Alpinia purpurata on USDA PLANTS Volunteer
Alternanthera philoxeroides alligatorweed GA, KY, IL, NC, SC, TX, VA COLO EU, FC, GAEPPC, GMRP, NCDPR, JS, TNC, VADCR Look-up Alternanthera philoxeroides on USDA PLANTS In Progress
Alternanthera sessilis sessile joyweed HI HALE JS Look-up Alternanthera sessilis on USDA PLANTS Volunteer
Amaranthus spinosus spiny amaranth HI, TN HALE JS Look-up Amaranthus spinosus on USDA PLANTS Volunteer
Amaranthus viridis slender amaranth HI HALE JS Look-up Amaranthus viridis on USDA PLANTS Volunteer
Ammophila arenaria European beach grass CA, OR, WA REDW CAEPPC, FC, JS, PNWEPPC, TNC Look-up Ammophila arenaria on USDA PLANTS Volunteer
Ampelopsis brevipedunculata Amur peppervine; porcelainberry CT, DC, DE, MA, MD, NJ, NY, PA, RI, VA, WI, WV CHOH, GWMP, MIMA, NACE, ROCR CIPWG, CTDEP, DNREC, FC, IPCNYS, MD, MDCES, NJDA, JS, PADCNR, PERT, RINHS, TL, TNC, VADCR, WIDNR Look-up Ampelopsis brevipedunculata on USDA PLANTS Yes
Anagallis arvensis scarlet pimpernel; poor-man's weatherglass; shepherd's dock AZ, CA, HI, NV CHIR, DEVA, DEWA, HALE, LAME JS Look-up Anagallis arvensis on USDA PLANTS Volunteer
Anchusa azurea Italian bugloss OR   NPSO Look-up Anchusa azurea on USDA PLANTS Volunteer
Andropogon virginicus broomsedge bluestem HI HALE JS, TNC, UHI Look-up Andropogon virginicus on USDA PLANTS Volunteer
Angiopteris evecta oriental vessel fern HI HALE JS, UHI Look-up Angiopteris evecta on USDA PLANTS Volunteer
Anthemis cotula mayweed; stinking camomile; common dog fennel CO, HI, TN HALE, ROMO JS Look-up Anthemis cotula on USDA PLANTS Volunteer
Anthoxanthum odoratum sweet vernal grass DC, HI, MD, OR, WA HALE, NACE, YELL FC, JS, PNWEPPC, TNC, UHI Look-up Anthoxanthum odoratum on USDA PLANTS Volunteer
Anthriscus sylvestris wild chervil OR, WA   PNWEPPC Look-up Anthriscus sylvestris on USDA PLANTS Volunteer
Antigonon leptopus coral vine; Mexican creeper, love vine, confederate vine HI HALE FC, JS Look-up Antigonon leptopus on USDA PLANTS Volunteer
Apera interrupta dense silkybent OR, WA YELL FC, PNWEPPC Look-up Apera interrupta on USDA PLANTS Volunteer
Apium graveolens celery CA, UT DEVA JS Look-up Apium graveolens on USDA PLANTS Volunteer
Aralia elata Japanese Angelica PA   SR Look-up Aralia elata on USDA PLANTS Volunteer
Araujia sericifera white bladder-flower CA   SR Look-up Araujia sericifera on USDA PLANTS Volunteer
Arctium lappa burdock; beggar's buttons, clotbur SD BADL FC, JS, TNC Look-up Arctium lappa on USDA PLANTS Volunteer
Arctium minus common burdock CO, ID, IL, KY, MD, MI, OH, OR, PA, SC, TN, VA, WA, WI, WV, WY BADL, CRMO, DINO, HAFE, MONO, SHEN, ROMO, THRO, YELL AAPR, FC, KYEPPC, JS, PERT, PNWEPPC, TNC, WIDNR Look-up Arctium minus on USDA PLANTS Volunteer
Ardisia crenata coral ardisia; hen's eyes; coralberry FL, TX   FC, FLEPPC, TNC, Look-up Ardisia crenata on USDA PLANTS In Progress
Ardisia elliptica shoebutton ardisia FL, HI EVER, HALE FC, FLEPPC, JS, SR, UHI Look-up Ardisia elliptica on USDA PLANTS Volunteer
Arenaria serpyllifolia thyme-leaved sandwort HI HALE, YELL JS Look-up Arenaria serpyllifolia on USDA PLANTS Volunteer
Arrhenatherum elatius tall oatgrass CA, OR, TN, VA, WA COLO, DEWA, REDW, YELL FC, JS, PNWEPPC, TNC, VADCR Look-up Arrhenatherum elatius on USDA PLANTS Volunteer
Artemisia absinthium absinthe; oldman; common wormwood; absinth sagewort OR, ND, WA THRO PNWEPPC, TNC Look-up Artemisia absinthium on USDA PLANTS In Progress
Artemisia stelleriana oldwoman NJ   NJDA Look-up Artemisia stelleriana on USDA PLANTS Volunteer
Artemisia vulgaris mugwort; common wormwood; felon herb MD, NJ, NY, PA, TN, VA COLO, NACE FC, NJDA, JS, PERT, TNC, VADCR Look-up Artemisia vulgaris on USDA PLANTS Volunteer
Arthraxon hispidus small carpgrass CT, KY, MD, PA, TN, VA, WV COLO, HAFE, MONO, ROCR CIPWG, FC, KYEPPC, MDDNR, JS, PERT, VADCR Look-up Arthraxon hispidus on USDA PLANTS Volunteer
Arum italicum Italian arum; Italian lords and ladies OR   NPSO Look-up Arum italicum on USDA PLANTS Volunteer
Arundina graminifolia bamboo orchid HI HALE JS Look-up Arundina graminifolia on USDA PLANTS Volunteer
Arundo donax giant reed; wild cane; cana brava; carrizo AZ, CA, GA, MD, NM, NV, TX, VA COLO, GRCA, LAME, SAAN, SEKI AZJS, CAEPPC, FC, GAEPPC, JP, MDCES, JS, TNC, VADCR Look-up Arundo donax on USDA PLANTS Yes
Asclepias curassavica bloodflower; bloodflower milkweed; bastard ipecac HI HALE JS Look-up Asclepias curassavica on USDA PLANTS Volunteer
Asparagus densiflorus asparagus fern; Sprenger's asparagus fern FL   FC, FLEPPC, Look-up Asparagus densiflorus on USDA PLANTS Volunteer
Asparagus officinalis common asparagus; garden asparagus AZ, SD, TN CHIR JS Look-up Asparagus officinalis on USDA PLANTS Volunteer
Asystasia gangetica Chinese violet HI   FC, UHI Look-up Asystasia gangetica on USDA PLANTS Volunteer
Atriplex semibaccata Australian saltbush CA   CAEPPC, FC Look-up Atriplex semibaccata on USDA PLANTS Volunteer
Atriplex suberecta peregrine saltbush HI HALE JS Look-up Atriplex suberecta on USDA PLANTS Volunteer
Avena fatua wild oats; Tartarian oats AZ ORPI JS Look-up Avena fatua on USDA PLANTS Volunteer
Avena sativa oats HI HALE FC, JS Look-up Avena sativa on USDA PLANTS Volunteer
Axonopus compressus broad-leaved carpetgrass HI HALE JS Look-up Axonopus compressus on USDA PLANTS Volunteer
Axonopus fissifolius common carpetgrass HI HALE UHI, JS Look-up Axonopus fissifolius on USDA PLANTS Volunteer
Bambusa vulgaris common bamboo; golden bamboo; grand bamboo DC ROCR JS Look-up Bambusa vulgaris on USDA PLANTS Volunteer
Barbarea vulgaris yellowrocket; wintercress MI   AAPR, FC Look-up Barbarea vulgaris on USDA PLANTS Volunteer
Bassia hyssopifolia five-hook bassia, fivehorn smotherweed CA, NV, OR, UT, WA DEVA, LAME, YELL FC, JS, PNWEPPC, TNC Look-up Bassia hyssopifolia on USDA PLANTS Volunteer
Bassia scoparia kochia; summer cypress AZ, CA, CO, CT, ID, OR, SD, TX, WA BADL, DEVA, DINO, GRCA, WUPA, YELL CIPWG FC, JS, PNWEPPC, TNC, Look-up Bassia scoparia on USDA PLANTS In Progress
Bauhinia variegata orchid tree FL   FC, FLEPPC, SR, Look-up Bauhinia variegata on USDA PLANTS Volunteer
Berberis thunbergii Japanese barberry CT, DC, DE, IN, KY, MA, MD, ME, MO, NC, NH, NJ, NY, OH, PA, RI, TN, VA, VT, WI, WV ACAD, ANTI, APCO, CATO, CHOH, COLO, GETT, GRSM, HAFE, INDU, MANA, MIMA, MONO, ROCR, SHEN, WEFA CIPWG, DNREC, FC, IPCNYS, KYEPPC, MDCES, MDDNR, MODOC, NHISC, NJDA, JS, PADCNR, PERT, RINHS, SR, TL, TNC, VADCR, VTDEC, WIDNR Look-up Berberis thunbergii on USDA PLANTS Yes
Berberis vulgaris common barberry; jaundice-berry; European barberry CA, CT, IL, IN, IA, PA, MA, ME, MT, NH, NJ, NM, NY, OH, RI, TN, VT, WI ACAD, DEWA, MIMA CIPWG, FC, NHISC, NJDA, JS, PADCNR, PERT, SR, TNC, VTDEC, WIDNR Look-up Berberis vulgaris on USDA PLANTS Volunteer
Berteroa incana hoary false madwort; hoary alyssum CO, WY ROMO, YELL JS Look-up Berteroa incana on USDA PLANTS Volunteer
Betula pendula European white birch KY, MD, WA, WI   FC, SR Look-up Betula pendula on USDA PLANTS Volunteer
Bidens pilosa hairy beggarticks HI HALE JS, UHI Look-up Bidens pilosa on USDA PLANTS Volunteer
Bischofia javanica bishopweed; bischofia; Javawood; toog FL   FC, FLEPPC, Look-up Bischofia javanica on USDA PLANTS Volunteer
Bocconia frutescens parrotweed HI   UHI Look-up Bocconia frutescens on USDA PLANTS Volunteer
Boerhavia coccinea scarlet spiderling HI   UHI Look-up Boerhavia coccinea on USDA PLANTS Volunteer
Bothriochloa ischaemum var. songarica yellow bluestem; Turkestan bluestem TX   JP Look-up Bothriochloa ischaemum var. songarica on USDA PLANTS Volunteer
Bougainvillea glabra bougainvillea; paper flower CA, FL   SR Look-up Bougainvillea glabra on USDA PLANTS Volunteer
Brachypodium sylvaticum slender false-brome OR, WA   FC, NPSO, PNWEPPC, TNC Look-up Brachypodium sylvaticum on USDA PLANTS Volunteer
Brassica juncea Chinese mustard; brown mustard; mustard greens NV LAME JS Look-up Brassica juncea on USDA PLANTS Volunteer
Brassica nigra black mustard CA, SD BADL, SEKI, YOSE FC, JS, TNC Look-up Brassica nigra on USDA PLANTS Volunteer
Brassica oleracea head cabbage; wild cabbage HI HALE JS Look-up Brassica oleracea on USDA PLANTS Volunteer
Brassica rapa wild mustard MD, TN, TX, VA ANTI JS Look-up Brassica rapa on USDA PLANTS Volunteer
Brassica tournefortii African mustard; Asian mustard; Mediterranean turnip; wild turnip AZ, CA, NV CHIR, GLCA, GRCA, LAME, ORPI AZJS, CAEPPC, FC, JS Look-up Brassica tournefortii on USDA PLANTS Volunteer
Breynia disticha snowbush; foliage flower FL   SR Look-up Breynia disticha on USDA PLANTS Volunteer
Bromus briziformis rattlegrass; rattlesnake chess OR, WA YELL FC, PNWEPPC Look-up Bromus briziformis on USDA PLANTS Volunteer
Bromus catharticus rescue grass AZ, HI, TX, UT CHIR, HALE, ORPI JS Look-up Bromus catharticus on USDA PLANTS Volunteer
Bromus commutatus meadow brome WV   WV Look-up Bromus commutatus on USDA PLANTS Volunteer
Bromus diandrus var. rigidus ripgut grass HI HALE JS Look-up Bromus diandrus var. rigidus on USDA PLANTS Volunteer
Bromus diandrus ripgut brome AZ, UT GLCA, GRCA JS Look-up Bromus diandrus on USDA PLANTS Volunteer
Bromus inermis smooth brome grass; awnless brome; Hungarian brome; AZ, CO, IA, ID, IN, MI, MN, MO, NE, OH, OR, SD, TN, WA, WI, WY BADL, DINO, GRCA, ROMO, SACN, SCBL, THRO, YELL AAPR, FC, INPAWS, MODOC, JS, PNWEPPC, TNC, WI, WIDNR Look-up Bromus inermis on USDA PLANTS Volunteer
Bromus japonicus Japanese chess AZ, CO, NE, OK, OR, SD, TN, TX, UT, WA, WY BADL, GLCA, GRCA, SCBL, STRI, YELL FC, JS, PNWEPPC, TNC Look-up Bromus japonicus on USDA PLANTS Volunteer
Bromus rubens red brome; foxtail brome; foxtail chess AZ, CA, NV, UT CHIR, DEVA, FOBO, GLCA, GRCA, LAME, ORPI, SEKI, YOSE AZJS, CAEPPC, FC, JS, TNC Look-up Bromus rubens on USDA PLANTS Volunteer
Bromus secalinus rye brome TX   FC, JS Look-up Bromus secalinus on USDA PLANTS Volunteer
Bromus sterilis poverty brome MD, MO, OR, WA   FC, MDDNR, MODOC, PNWEPPC, TNC Look-up Bromus sterilis on USDA PLANTS Volunteer
Bromus tectorum cheatgrass AZ, CA, CO, CT, HI, ID, NE, NJ, NV, OR, PA, SD, TN, UT, WA, WV, WY BADL, CHIR, CRMO, DINO, DEVA, FOBO, GLCA, GRCA, HAFE, HALE, ROMO, SCBL, SEKI, STRI, YELL, YOSE CAEPPC, CIPWG, FC, NJDA, JS, PADCNR, PNWEPPC, TNC Look-up Bromus tectorum on USDA PLANTS Volunteer
Broussonetia papyrifera paper mulberry; tapa cloth tree DC, FL, GA, LA, MD, NC, OK, PA, SC, TN, VA CHOH, PETE, VICK FC, JS, SR, TNC Look-up Broussonetia papyrifera on USDA PLANTS Yes
Bruguiera gymnorrhiza oriental mangrove HI   UHI Look-up Bruguiera gymnorrhiza on USDA PLANTS Volunteer
Bryonia alba white bryonia OR, WA   FC, PNWEPPC Look-up Bryonia alba on USDA PLANTS Volunteer
Buddleja davidii orange-eye butterfly bush; summer lilac CA, KY, NC, NJ, OR, PA, WA, WV REDW FC, NJDA, JS, NPSO, PNWEPPC, SR Look-up Buddleja davidii on USDA PLANTS In Progress
Buddleja lindleyana Lindley's butterfly bush FL, GA, NC, TX   SR Look-up Buddleja lindleyana on USDA PLANTS Volunteer
Buddleja madagascariensis smokebush HI   UHI Look-up Buddleja madagascariensis on USDA PLANTS Volunteer
Butomus umbellatus flowering rush; grassy rush; water gladiolus CT, NH, VT, WI   CIPWG, FC, NHISC, VTDEC, WIDNR Look-up Butomus umbellatus on USDA PLANTS Volunteer
Caesalpinia decapetala shoofly; mysore thorn HI   UHI Look-up Caesalpinia decapetala on USDA PLANTS Volunteer
Caesalpinia gilliesii bird-of-paradise shrub AZ, NM, NV, TX   FC, SR, TNC Look-up Caesalpinia gilliesii on USDA PLANTS Volunteer
Cajanus cajan pigeon-pea, Congo pea, red gram FL   SR Look-up Cajanus cajan on USDA PLANTS Volunteer
Callicarpa dichotoma Chinese beauty-berry NC   SR Look-up Callicarpa dichotoma on USDA PLANTS Volunteer
Callitriche stagnalis pond water-starwort CT, NJ   CIPWG, NJDA, Look-up Callitriche stagnalis on USDA PLANTS Volunteer
Calluna vulgaris heather, Scotch heather, ling MA, NC, RI   SR Look-up Calluna vulgaris on USDA PLANTS Volunteer
Calocedrus decurrens California incense cedar HI HALE JS Look-up Calocedrus decurrens on USDA PLANTS Volunteer
Calophyllum antillanum beautyleaf; Santa Maria FL   FC, FLEPPC Look-up Calophyllum antillanum on USDA PLANTS Volunteer
Calophyllum inophyllum Indian laurel FL   SR Look-up Calophyllum inophyllum on USDA PLANTS Volunteer
Camelina microcarpa littlepod false flax SD BADL, YELL JS Look-up Camelina microcarpa on USDA PLANTS Volunteer
Campanula rapunculoides creeping bell flower; rover bellflower WI   WIDNR Look-up Campanula rapunculoides on USDA PLANTS Volunteer
Canavalia cathartica maunaloa HI HALE JS Look-up Canavalia cathartica on USDA PLANTS Volunteer
Canna indica canna; poloke; Indian-shot HI HALE JS Look-up Canna indica on USDA PLANTS Volunteer
Cannabis sativa marijuana; Mary Jane; gallow grass UT   JS Look-up Cannabis sativa on USDA PLANTS Volunteer
Capsella bursa-pastoris shepherd's purse AZ, CA, HI, MD, NV, UT, VA ANTI, DEVA, HALE, LAME, YELL JS Look-up Capsella bursa-pastoris on USDA PLANTS Volunteer
Capsicum annuum cayenne pepper; chili pepper; nioi HI HALE JS Look-up Capsicum annuum on USDA PLANTS Volunteer
Caragana arborescens pea-tree; Siberian pea shrub WI   WIDNR Look-up Caragana arborescens on USDA PLANTS Volunteer
Cardamine flexuosa woodland bittercress HI HALE JS Look-up Cardamine flexuosa on USDA PLANTS Volunteer
Cardamine impatiens narrow-leaf bittercress CT, NJ   CIPWG, NJDA Look-up Cardamine impatiens on USDA PLANTS Volunteer
Cardaria draba whitetop AZ, CA, CO, ID, OR, MT, WA, WY DINO, GRCA, YELL, YOSE CAEPPC, FC, JS, PNWEPPC, TNC Look-up Cardaria draba on USDA PLANTS Volunteer
Cardiospermum halicacabum balloon-vine; heart pea; winter cherry VA COLO JS, VADCR Look-up Cardiospermum halicacabum on USDA PLANTS In Progress
Carduus acanthoides spiny plumeless thistle IA, MN, NJ, OR, SD, VA, WA, WI, WY THRO, YELL FC, NJDA, JS, PNWEPPC, TNC, VADCR?, WI, WIDNR Look-up Carduus acanthoides on USDA PLANTS Volunteer
Carduus crispus curly plumeless thistle NJ   NJDA Look-up Carduus crispus on USDA PLANTS Volunteer
Carduus nutans nodding plumeless thistle CO, GA, IA, ID, IL, KS, KY, MD, MN, MO, NC, NE, NJ, OR, PA, SD, TN, VA, WA, WI, WY ANTI, BLRI, CATO, COLO, DINO, GRCA, GRSM, MONO, ROMO, SACN, STRI, THRO, YELL FC, GAEPPC, KYEPPC, MODOC, NJDA, JS, PADCNR, PNWEPPC, TNC, VADCR, WIDNR Look-up Carduus nutans on USDA PLANTS Yes
Carduus pycnocephalus Italian plumeless thistle CA, HI, OR, WA HALE, SEKI FC, JS, PNWEPPC Look-up Carduus pycnocephalus on USDA PLANTS Volunteer
Carduus tenuiflorus shore thistle; slender thistle; winged thistle OR, WA   FC, PNWEPPC Look-up Carduus tenuiflorus on USDA PLANTS Volunteer
Carex kobomugi Asiatic sand sedge; Japanese sedge MD, NJ, VA ASIS, COLO NJDA, JS, VADCR Look-up Carex kobomugi on USDA PLANTS Yes
Carex longii Long's sedge HI HALE JS Look-up Carex longii on USDA PLANTS Volunteer
Carica papaya papaya FL, HI HALE JS, SR Look-up Carica papaya on USDA PLANTS Volunteer
Carissa macrocarpa Amatungula FL   SR Look-up Carissa macrocarpa on USDA PLANTS Volunteer
Carlina vulgaris Carline thistle NJ   NJDA Look-up Carlina vulgaris on USDA PLANTS Volunteer
Carpobrotus edulis Hottentot-fig; iceplant; sea fig CA   CAEPPC, FC, TNC Look-up Carpobrotus edulis on USDA PLANTS In Progress
Castilla elastica Panama rubbertree; Castilla rubbertree HI   UHI Look-up Castilla elastica on USDA PLANTS Volunteer
Castilleja arvensis field indian paintbrush HI HALE JS Look-up Castilleja arvensis on USDA PLANTS Volunteer
Casuarina equisetifolia Australian pine; beach she-oak; beefwood; horsetail tree; South Sea ironweed; mile tree FL, HI BICY, DRTO, EVER, HALE FC, FLEPPC, JS, SR, TNC, UHI Look-up Casuarina equisetifolia on USDA PLANTS Yes
Casuarina glauca swamp oak; swamp she-oak; FL, HI   FC, FLEPPC, UHI, SR, Look-up Casuarina glauca on USDA PLANTS Volunteer
Catalpa bignonioides Southern catalpa CA   SR Look-up Catalpa bignonioides on USDA PLANTS Volunteer
Catalpa ovata Chinese catalpa CT, MA, MD   FC, SR Look-up Catalpa ovata on USDA PLANTS Volunteer
Catalpa speciosa northern catalpa; western catalpa FL, MD, NJ, TN, VA MONO NJDA, JS, SR Look-up Catalpa speciosa on USDA PLANTS Volunteer
Catharanthus roseus Madagascar periwinkle; rose periwinkle FL, HI HALE JS, TNC Look-up Catharanthus roseus on USDA PLANTS Volunteer
Caulerpa taxifolia killer algae CA   CADFG Look-up Caulerpa taxifolia on USDA PLANTS Volunteer
Cecropia obtusifolia trumpet tree HI   UHI Look-up Cecropia obtusifolia on USDA PLANTS Volunteer
Cedrus deodara Deodar cedar HI HALE JS Look-up Cedrus deodara on USDA PLANTS Volunteer
Celastrus orbiculatus Asian bittersweet; Asiatic bittersweet; Oriental bittersweet CT, DC, DE, IL, IN, KY, MA, MD, ME, MI, MO, NC, NH, NJ, NY, PA, RI, TN, VA, VT, WI, WV ACAD, BLRI, CATO, COLO, GRSM, GWMP, HAFE, INDU, MONO, NACE, PETE, RICH, ROCR, SHEN, WEFA, WOTR AAPR, CIPWG, DNREC, FC, INPAWS, IPCNYS, KYEPPC, MDCES, MDDNR, MODOC, NHISC, NJDA, JS, PADCNR, PERT, RINHS, TL, TNC, TNEPPC, VADCR, VTDEC, WI, WIDNR Look-up Celastrus orbiculatus on USDA PLANTS Yes
Cenchrus echinatus Southern sandbur HI   UHI Look-up Cenchrus echinatus on USDA PLANTS In Progress
Cenchrus longispinus longspine sandbur OR, WA   FC, PNWEPPC Look-up Cenchrus longispinus on USDA PLANTS Volunteer
Centaurea biebersteinii spotted knapweed AZ, CA, CO, CT, DE, KY, ID, IL, MA, MD, MI, MN, MT, NC, NJ, NY, OR, PA, SD, UT, VA, WA, WI, WV, WY BADL, BLRI, COLO, CRMO, DINO, GLAC, GRCA, GRSM, HAFE, INDU, MIMA, REDW, ROMO, SACN, SHEN, THRO, YELL AAPR, CIPWG, CTDEP, FC, IPCNYS, KYEPPC, MDCES, MDDNR, NJDA, JS, NWRA, PERT, PNWEPPC, TNC, VADCR, WI, WIDNR Look-up Centaurea biebersteinii on USDA PLANTS Yes
Centaurea calcitrapa red star-thistle CA, UT   CAE, FC, JS, TNC Look-up Centaurea calcitrapa on USDA PLANTS Volunteer
Centaurea cyanus cornflower; batchellor's button; blue bottle MD, TN ANTI JS Look-up Centaurea cyanus on USDA PLANTS Volunteer
Centaurea debeauxii ssp. thuillieri meadow knapweed OR, WA   FC, PNWEPPC Look-up Centaurea debeauxii ssp. thuillieri on USDA PLANTS Volunteer
Centaurea diffusa diffuse knapweed; white knapweed AZ, CO, ID, NE, OR, UT, WA, WY CRMO, DINO, GRCA, ROMO, YELL FC, JS, PNWEPPC, TNC Look-up Centaurea diffusa on USDA PLANTS In Progress
Centaurea jacea brown knapweed; brown-ray knapweed NC, OR, VA, WA BLRI FC, JS, VADCR, PNWEPPC Look-up Centaurea jacea on USDA PLANTS Volunteer
Centaurea macrocephala bighead knapweed OR, WA   FC, PNWEPPC Look-up Centaurea macrocephala on USDA PLANTS Volunteer
Centaurea melitensis Maltese star thistle; tocalote AZ, CA, HI CHIR, DEVA, HALE, ORPI, SEKI, YOSE CAE, JS Look-up Centaurea melitensis on USDA PLANTS Volunteer
Centaurea nigra black knapweed; hard heads OR, WA   FC, PNWEPPC Look-up Centaurea nigra on USDA PLANTS Volunteer
Centaurea nigrescens Tyrol knapweed NY   FC, TNC Look-up Centaurea nigrescens on USDA PLANTS Volunteer
Centaurea solstitialis yellow star-thistle CA, ID, OR, NJ, UT, WA DEVA, GRCA, REDW, SEKI, YOSE CAEPPC, FC, NJDA, NWRA, JS, PNWEPPC, TNC Look-up Centaurea solstitialis on USDA PLANTS Yes
Centaurea transalpina Alpine knapweed VA   FC, VADCR Look-up Centaurea transalpina on USDA PLANTS Volunteer
Centaurea triumfettii squarrose knapweed OR, WA   FC, PNWEPPC Look-up Centaurea triumfettii on USDA PLANTS Volunteer
Centaurium erythraea bitter herb; centaury HI HALE JS Look-up Centaurium erythraea on USDA PLANTS Volunteer
Centella asiatica spadeleaf; pohekula HI HALE JS Look-up Centella asiatica on USDA PLANTS Volunteer
Centranthus ruber red valerian CA, OR, WA DEVA JS, PNWEPPC Look-up Centranthus ruber on USDA PLANTS Volunteer
Cerastium biebersteinii Boreal mouse-ear chickweed NJ   NJDA Look-up Cerastium biebersteinii on USDA PLANTS Volunteer
Cerastium fontanum ssp. vulgare common mouse-ear chickweed; hehine-hauli HI, TN HALE, YELL JS Look-up Cerastium fontanum ssp. vulgare on USDA PLANTS Volunteer
Cerastium fontanum common mouse-ear chickweed; hehine-hauli MD, VA MONO JS Look-up Cerastium fontanum on USDA PLANTS Volunteer
Ceratocephala testiculata bur buttercup SD BADL, YELL JS Look-up Ceratocephala testiculata on USDA PLANTS Volunteer
Cestrum diurnum day jessamine FL   FC, FLEPPC, SR, Look-up Cestrum diurnum on USDA PLANTS Volunteer
Cestrum nocturnum night-flowering jassamine FL, GA, HI   UHI, SR Look-up Cestrum nocturnum on USDA PLANTS Volunteer
Chamaecrista nictitans partridge pea; lauki HI HALE JS Look-up Chamaecrista nictitans on USDA PLANTS Volunteer
Chamaecyparis lawsoniana Port Orford cedar; Lawson cypress HI HALE JS Look-up Chamaecyparis lawsoniana on USDA PLANTS Volunteer
Chamaesyce hirta garden spurge; kokokahiki HI HALE JS Look-up Chamaesyce hirta on USDA PLANTS Volunteer
Chamaesyce maculata spotted sandmat CA, ND, NY DEVA JS, TNC Look-up Chamaesyce maculata on USDA PLANTS Volunteer
Chelidonium majus celandine CT, MD, VT, WI ANTI, MONO CTDEP, FC, JS, VTDEC, WIDNR Look-up Chelidonium majus on USDA PLANTS Volunteer
Chenopodium ambrosioides Mexican tea; Spanish tea; American wormwood HI, MD, NJ, TN ANTI, GRCA, HALE NJDA, JS Look-up Chenopodium ambrosioides on USDA PLANTS Volunteer
Chenopodium murale garden goosefoot; nettle-leaf goosefoot CA, TN DEVA, GRCA JS Look-up Chenopodium murale on USDA PLANTS Volunteer
Chenopodium pumilio clammy goosefoot HI HALE FC, JS Look-up Chenopodium pumilio on USDA PLANTS Volunteer
Chenopodium simplex giant-seed goosefoot TX   JS Look-up Chenopodium simplex on USDA PLANTS Volunteer
Chloris barbata swollen windmill grass HI   UHI Look-up Chloris barbata on USDA PLANTS Volunteer
Chondrilla juncea rush skeletonweed AZ, OR, WA GRCA FC, PNWEPPC, JS, TNC Look-up Chondrilla juncea on USDA PLANTS Volunteer
Chorispora tenella blue mustard; chorispora CA, ID, OR, WA, WY DEVA, YELL FC, JS, PNWEPPC, TNC Look-up Chorispora tenella on USDA PLANTS Volunteer
Chrysophyllum oliviforme satinleaf HI   UHI Look-up Chrysophyllum oliviforme on USDA PLANTS Volunteer
Cichorium intybus common chicory; blue sailors; succory AZ, CA, ID, MD, MI, OH, PA, TN, UT, VA, WI, WV ANTI, CHIR, DEVA, HAFE, STRI AAPR, JS, PERT, TNC, WIDNR Look-up Cichorium intybus on USDA PLANTS Volunteer
Cinchona pubescens quinine HI   UHI Look-up Cinchona pubescens on USDA PLANTS Volunteer
Cinnamomum burmannii Batavia cinnamon; Padang cassia HI   UHI Look-up Cinnamomum burmannii on USDA PLANTS In Progress
Cinnamomum camphora camphortree AL, FL, GA, MS, TX   ABS, FC, FLEPPC, SR Look-up Cinnamomum camphora on USDA PLANTS In Progress
Cirsium arvense Canada thistle AK, AZ, CO, CT, DE, IA, ID, IN, MD, MI, MN, MO, MT, ND, NJ, OH, OR, PA, RI, SD, TN, VA, WA, WI, WV, WY ANTI, BADL, BLRI, CATO, COLO, CRMO, DETO, DINO, GRCA, GRSM, HAFE, INDU, MANA, MONO, REDW, ROMO, THRO, SACN, YELL AAPR, CIPWG, DNREC, FC, FSAK, INPAWS, MDCES, MDDNR, MODOC, NJDA, JS, NWRA, PADCNR, PNWEPPC, RINHS, TNC, VADCR, WI, WIDNR Look-up Cirsium arvense on USDA PLANTS Yes
Cirsium vulgare bull thistle AK, AZ, CA, CO, HI, ID, MA, MD, MI, MN, MO, NC, NJ, OH, OR, PA, SD, TN, UT, VA, WA, WI, WV, WY ANTI, BADL, BLRI, COLO, CRMO, DINO, GRCA, GRSM, HAFE, HALE, MANA, MIMA, MONO, REDW, ROMO, SEKI, SHEN, YELL, YOSE AAPR, FC, FSAK, MDCES, MDDNR, NJDA, JS, PADCNR, PERT, PNWEPPC, TNC, VADCR, WIDNR Look-up Cirsium vulgare on USDA PLANTS Volunteer
Cistus incanus hairy rock-rose CA   SR Look-up Cistus incanus on USDA PLANTS Volunteer
Citharexylum caudatum juniper-berry HI   UHI Look-up Citharexylum caudatum on USDA PLANTS Volunteer
Citharexylum spinosum spiny fiddlewood HI   UHI Look-up Citharexylum spinosum on USDA PLANTS Volunteer
Citrullus colocynthis colocynth; citron; bitter apple; vine of Sodom CA DEVA JS Look-up Citrullus colocynthis on USDA PLANTS Volunteer
Citrus × limon lemon FL   SR Look-up Citrus × limon on USDA PLANTS Volunteer
Citrus aurantifolia lime FL   SR Look-up Citrus aurantifolia on USDA PLANTS Volunteer
Citrus aurantium bigarade; sour orange; Seville orange FL, GA   SR Look-up Citrus aurantium on USDA PLANTS Volunteer
Citrus sinensis sweet orange FL   SR Look-up Citrus sinensis on USDA PLANTS Volunteer
Clematis orientalis Oriental virgin's bower CO, NV   SR Look-up Clematis orientalis on USDA PLANTS Volunteer
Clematis terniflora leatherleaf clematis; yam-leaved clematis; sweet autumn virgin's bower DC, DE, IL, MD, NJ, TN, VA GRSM, GWMP, NACE, ROCR, STRI DNREC, EU, FC, MDDNR, NJDA, JS Look-up Clematis terniflora on USDA PLANTS Volunteer
Clematis vitalba Traveler's joy OR, WA   FC, NPSO, PNWEPPC, SR Look-up Clematis vitalba on USDA PLANTS In Progress
Clerodendrum bungei rose glory-bower FL, GA   SR Look-up Clerodendrum bungei on USDA PLANTS Volunteer
Clerodendrum chinense stickbush FL   SR Look-up Clerodendrum chinense on USDA PLANTS Volunteer
Clerodendrum indicum Turk's turban; tubeflower FL, GA, SC   SR Look-up Clerodendrum indicum on USDA PLANTS Volunteer
Clerodendrum japonicum Japanese glorybower HI   UHI Look-up Clerodendrum japonicum on USDA PLANTS Volunteer
Clerodendrum speciosissimum Javanese glory-bower FL   SR Look-up Clerodendrum speciosissimum on USDA PLANTS Volunteer
Clidemia hirta soapbush; Koster's curse HI HALE JS, TNC, UHI Look-up Clidemia hirta on USDA PLANTS Volunteer
Coccinia grandis ivy gourd, scarlet-fruited gourd HI   UHI Look-up Coccinia grandis on USDA PLANTS Volunteer
Coffea arabica arabian coffee HI HALE JS Look-up Coffea arabica on USDA PLANTS Volunteer
Coincya monensis coincya CA   TNC Look-up Coincya monensis on USDA PLANTS Volunteer
Coix lacryma-jobi Job's tears HI HALE JS Look-up Coix lacryma-jobi on USDA PLANTS Volunteer
Colocasia esculenta wild taro; dasheen; kalo; eddo FL SAAN ABS, FC, FLEPPC Look-up Colocasia esculenta on USDA PLANTS Volunteer
Colubrina asiatica Asiatic colubrina; latherleaf FL EVER FC, FLEPPC, JS, SR, TNC Look-up Colubrina asiatica on USDA PLANTS Yes
Colutea arborescens bladder senna C