USDA and NRCS Identifier NRCS Logo Web Site PLANTS photo banner
PLANTS Home about PLANTS PLANTS Team Partners of PLANTS What's New at PLANTS National Plant Data Center Web Site Help using PLANTS Contact PLANTS
 Search the PLANTS Web site
 Name Search

 Introduced, Invasive, and Noxious Plants
PLANTS Image Gallery
Download PLANTS data
Related tools
You are here: Home / Introduced, Invasive, and Noxious Plants / Introduced, Invasive, and Noxious Plants Results Printer-Friendly Printer-Friendly / Download
Introduced, Invasive, and Noxious Plants

NRCS Invasive Species Policy
Invasive Species Executive Order 13112

State Noxious Weeds
678 records returned

Click on an accepted name below to view its PLANTS Profile with more information, and web links if available. Noxious weeds that are synonyms retain their noxious status, and are indented beneath the current PLANTS accepted name.

Alabama Division of Plant Industry. 2003. Summary of plant protection regulations (20 October 2003). Alabama Department of Agriculture and Industries.
Alaska Division of Agriculture. 1996. State of Alaska prohibited and restricted noxious weeds (20 October 2003). Alaska Department of Natural Resources.
Arizona Plant Services Division. 2005. Prohibited, regulated and restricted noxious weeds (1 May 2006). Arizona Department of Agriculture.
Arkansas Arkansas State Plant Board. 1997. Regulations on plant diseases and pests (20 October 2003). Arkansas State Plant Board.
California California Department of Food and Agriculture. 2003. Pest ratings of noxious weed species and noxious weed seed (20 October 2003). California Department of Food and Agriculture.
California Department of Food and Agriculture. 2003. Plant quarantine manual, California plant quarantine policy - weeds (20 October 2003). California Department of Food and Agriculture.
Food and Agriculture Code. 2003. Camelthorn, Section 7301-7305 (20 October 2003). State of California.
Food and Agriculture Code. 2003. Hydrilla, Section 6048-6049 (20 October 2003). State of California.
Colorado Plant Industry Division. 2003. Rules pertaining to the administration and enforcement of the Colorado Noxious Weed Act (23 January 2006). Colorado Department of Agriculture.
Connecticut Connecticut Invasive Plants Council. 2004. Connecticut invasive plant list (20 April 2005). Connecticut Invasive Plants Council.
Delaware Delaware Department of Agriculture. 1986. Rules and regulations for noxious weed control (23 January 2006). Delaware Department of Agriculture.
Florida Bureau of Aquatic Plant Management. 2002. Aquatic plant importation, transportation, non-nursery cultivation, possession and collection (20 October 2003). Florida Department of Environmental Protection.
Division of Plant Industry. 2000. Introduction or release of plant pests, noxious weeds, arthropods, and biological control agents (20 October 2003). Florida Department of Agriculture & Consumer Services.
Hawaii Division of Plant Industry. 2003. List of plant species designated as noxious weeds (20 October 2003). Hawaii Department of Agriculture.
Idaho Idaho Department of Agriculture. 2006. Noxious weed rules (24 May 2006). Idaho Department of Agriculture.
Illinois Illinois Administrative Code. 2002. Illinois noxious weed law (20 October 2003). State of Illinois.
Indiana Division of Entomology and Plant Pathology. 2003. Summary of plant protection regulations (20 October 2003). Indiana Department of Natural Resources.
Iowa Iowa Department of Agricultureand Land Stewardship. 2002. The Iowa weed law (20 October 2003). Iowa Department of Agriculture & land Stewardship.
Kansas Division of Plant Health. 2003. Kansas noxious weed law (20 October 2003). Kansas Department of Agriculture.
Kentucky Kentucky Revised Statutes. 1990. Department to eradicate noxious weeds on right-of-ways -- advertisement of program (1 May 2006). State of Kentucky.
Louisiana Louisiana State Code. 1995. Agriculture and forestry. State of Louisiana.
Maine Public Laws of Maine. 1999. An act to prevent the spread of invasive aquatic plants (20 October 2003). State of Maine.
Maryland Annotated Code of Maryland. 1994. Weed control (20 October 2003). State of Maryland.
Massachusetts Bureau of Farm Productsand Plant Industries. 2006. Massachusetts prohibited plant list (23 January 2006). Massachusetts Department of Agricultural Resources.
Michigan Pesticide and Plant Pest Management Division. 2002. Noxious and restricted weeds and prohibited plants - Michigan (20 October 2003). Michigan Department of Agriculture.
Minnesota Agronomy Services Division. 2003. Minnesota noxious weed rules (20 October 2003). Minnesota Department of Agriculture.
Mississippi Bureau of Plant Industry. 2004. Regulation of noxious weeds (24 May 2006). State of Mississippi.
Missouri Revised Statues of Missouri. 2004. Insect pests and weeds (20 October 2003). Missouri Department of Agriculture.
Montana Montana Department of Agriculture. 2003. Montana noxious weeds list (24 May 2006). Montana Department of Agriculture.
Nebraska Bureau of Plant Industry. 1989. Noxious weed regulations (24 May 2006). Nebraska Department of Agriculture.
Nevada Nevada Administrative Code. 2003. Control of insects, pests, and noxious weeds (20 October 2003). State of Nevada.
New Hampshire New Hampshire Code of Administrative Rules. 2004. Invasive species, Chapter Agr. 3800 (15 September 2004). State of New Hampshire.
New Mexico Office of the Director/Secretary. 1998. New Mexico noxious weed list (20 October 2003). New Mexico Department of Agriculture.
North Carolina North Carolina Department of Agriculture. 2003. Regulations for state noxious weeds (20 October 2003). North Carolina Department of Agriculture.
North Dakota North Dakota Century Code. 2003. Noxious weed control (20 October 2003). State of North Dakota.
Ohio Plant Industry Division. 1997. Noxious weeds (20 October 2003). Ohio Department of Agriculture.
Oklahoma Oklahoma House of Representatives. 1998. House Bill 2277 (20 October 2003). State of Oklahoma.
Oregon Oregon Administrative Rules. 2006. Quarantine; noxious weeds, Chapter 603-52-1200 (24 May 2006). State of Oregon.
Oregon Department of Agriculture. 2006. Noxious weed policy and classification system (24 May 2006). Oregon Department of Agriculture.
Pennsylvania Pennsylvania Department of Agriculture. 2000. Pennsylvania noxious weed control list (20 October 2003). Pennsylvania Department of Agriculture.
South Carolina South Carolina Aquatic Nuisance Species Program. 2003. Illegal aquatic plants in South Carolina (20 October 2003). South Carolina Department of Natural Resources.
State Crop Pest Commission. 1996. Designation of plant pests (24 May 2006). State of South Carolina.
South Dakota South Dakota Code. 1992. Plant quarantine and treatment, Chapter 38-24a, Article 12:51 (24 May 2006). State of South Dakota.
South Dakota Code. 2005. South Dakota weed and pest control, Chapter 38-22, Article 12:62 (24 May 2006). State of South Dakota.
Tennessee Department of Agriculture of Tennessee. 1998. Plant pest act (20 October 2003). Department of Agriculture of Tennessee.
Texas Texas Administrative Code. 2005. Quarantines and noxious plants, Chapter 19 (24 May 2006). State of Texas.
Utah Utah Department of Agriculture. 2003. Utah noxious weed act (20 October 2003). Utah Department of Agriculture.
Vermont Vermont Department of Agriculture, Food and Markets. 2003. Quarantine #3 - noxious weeds (20 October 2003). Vermont Department of Agriculture, Food and Markets.
Virginia Virginia Department of Agriculture and Consumer Services. 2003. Virginia noxious weed law (20 October 2003). Virginia Department of Agriculture and Consumer Services.
Washington Washington Administrative Code. 2005. Noxious weed control, Chapter 16-752 (24 May 2006). State of Washington.
Washington Administrative Code. 2005. State noxious weed list and schedule of monetary penalties, Chapter 16-750 (24 May 2006). State of Washington.
West Virginia West Virginia Department of Agriculture. 2003. Regulations governing the distribution of plant material in West Virginia. West Virginia Department of Agriculture.
Wisconsin Doll, J. 1990. Noxious weeds in Wisconsin (20 October 2003). University of Wisconsin Cooperative Extension Programs.
Wyoming Wyoming Department of Agriculture. 2003. Designated noxious weeds and prohibited noxious weeds (20 October 2003). Wyoming Department of Agriculture.
Symbol Scientific Name Common Name State Noxious Status Native Status*
ABTH Abutilon theophrasti Medik. velvetleaf CO (CW), IA (SNW), OR (BDW, Q), WA (CAW, NWSPQ) L48 (I), CAN (I)
ACME80 Acacia mearnsii De Wild. black wattle HI (NW) L48 (I), HI (I)
ACPA8 Acacia paradoxa DC. paradox acacia CA (BW) L48 (I)
ACNO7 Acaena novae-zelandiae Kirk biddy-biddy L48 (I)
ACNO4 Acaena novae-zelandica Kirk, orth. var. CA (AW), HI (NW), OR (BDW, Q)
ACPA14 Acaena pallida (Kirk) Allen pale biddy-biddy CA (AW) L48 (I)
ACGI Acer ginnala Maxim. Amur maple CT (PINB) L48 (I), CAN (I)
ACPL Acer platanoides L. Norway maple CT (INB), MA (P) L48 (I), CAN (I)
ACPS Acer pseudoplatanus L. sycamore maple CT (PIB), MA (P) L48 (I), CAN (I)
ACBR5 Achnatherum brachychaetum (Godr.) Barkworth shortbristled needlegrass CA (AW) L48 (I)
STBR3 Stipa brachychaeta Godr. AZ (PNW)
ACRE3 Acroptilon repens (L.) DC. hardheads AZ (PNW, RNW), CA (BW), CO (BW), HI (NW), NM (CBW), ND (NW), OR (BDW, Q), WA (CBW) L48 (I), CAN (I)
CERE6 Centaurea repens L. AK (NW), ID (NW), IA (PRNW), KS (NW), MT (CAT1), NV (NW), SC (PP), SD (NW, RNPS), UT (NW), WY (NW)
AECY Aegilops cylindrica Host jointed goatgrass AZ (PNW, RNW), CA (BW), CO (CW), ID (NW), NM (CCW), OR (BDW, Q), WA (CCW) L48 (I)
AEGE Aegilops geniculata Roth ovate goatgrass L48 (I)
AEOV2 Aegilops ovata L. p.p. CA (BW), OR (ADW, Q)
AETR Aegilops triuncialis L. barbed goatgrass CA (BW), OR (ADW, Q) L48 (I)
AEGIN Aeginetia L. aeginetia AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
AEPO Aegopodium podagraria L. bishop's goutweed CT (IB), MA (P), VT (CBW) L48 (I), CAN (I), SPM (I)
AEIN Aeschynomene indica L. Indian jointvetch HI (NW) L48 (N), PR (N)
AERU Aeschynomene rudis Benth. zigzag jointvetch CA (BW) L48 (N), PR (N)
AEVI3 Aeschynomene virginica (L.) Britton, Sterns & Poggenb. Virginia jointvetch AR (NW) L48 (N)
AGAD2 Ageratina adenophora (Spreng.) R.M. King & H. Rob. sticky snakeroot AL (CAW), CA (Q), FL (NW), HI (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I), HI (I)
AGRI2 Ageratina riparia (Regel) R.M. King & H. Rob. spreading snakeroot HI (NW) HI (I)
AGGI Agrostemma githago L. common corncockle AR (NW), SC (PP) L48 (I), AK (I), CAN (I)
AIAL Ailanthus altissima (Mill.) Swingle tree of heaven CT (IB), MA (P), NH (PIS), VT (CBW) L48 (I), HI (I), CAN (I)
ALECT2 Alectra Thunb. alectra AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) (I)
ALMA12 Alhagi maurorum Medik. camelthorn CA (AW, PN), WA (CBW) L48 (I)
ALCA Alhagi camelorum Fisch. NV (NW), TX (NP)
ALPS3 Alhagi pseudalhagi (M. Bieb.) Desv. ex B. Keller & Schaparenko AZ (PNW, RNW), CO (AW), NM (CAW), OR (ADW, Q)
ALPE4 Alliaria petiolata (M. Bieb.) Cavara & Grande garlic mustard AL (CAW), CT (IB), MA (P), MN (PNW), NH (PIS), OR (BDW, Q), VT (CBW), WA (CAW, NWSPQ) L48 (I), AK (I), CAN (I)
ALLIU Allium L. onion AR (NW) (I), L48 (I,N)
ALNE3 Allium neapolitanum Cirillo white garlic L48 (I)
NOIN3 Nothoscordum inodorum (Aiton) G. Nicholson CA (BW)
ALPA20 Allium paniculatum L. Mediterranean onion CA (BW) L48 (I)
ALVI Allium vineale L. wild garlic CA (BW), HI (NW) L48 (I), AK (I), CAN (I)
ALVIC3 Allium vineale L. ssp. compactum (Thuill.) Coss. & Germ. compact onion HI (NW) L48 (I)
ALMY Alopecurus myosuroides Huds. slender meadow foxtail WA (CBW) L48 (I), CAN (I)
ALTER2 Alternanthera Forssk. joyweed AR (NW) (I,N), L48 (I,N)
ALPH Alternanthera philoxeroides (Mart.) Griseb. alligatorweed AL (CCW), AZ (PNW), CA (AW), FL (PAP1), SC (ILAP, PP), TX (NP) L48 (I), PR (I)
ALSE4 Alternanthera sessilis (L.) R. Br. ex DC. sessile joyweed AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) (I), L48 (I), HI (I), PR (N), VI (N)
ALCO16 Alyssum corsicum Duby yellowtuft OR (NW) L48 (I)
ALMU Alyssum murale Waldst. & Kit. yellowtuft OR (NW) L48 (I), CAN (I)
AMAR2 Ambrosia artemisiifolia L.1 annual ragweed IL (NW), OR (BDW, Q) L48 (I,N), HI (I), CAN (N)
AMARE Ambrosia artemisiifolia L. var. elatior (L.) Descourtils annual ragweed L48 (I), HI (I), CAN (N)
AMEL2 Ambrosia elatior L. MI (NW)
AMGR5 Ambrosia grayi (A. Nelson) Shinners woollyleaf bur ragweed KS (NW) L48 (N)
AMTO3 Ambrosia tomentosa Nutt. skeletonleaf bur ragweed ID (NW), OR (ADW, Q) L48 (N)
FRDI3 Franseria discolor Nutt. WY (NW)
AMTR Ambrosia trifida L.1 great ragweed CA (BW), DE (NW), IL (NW) L48 (N), CAN (N)
AMFR Amorpha fruticosa L. false indigo bush CT (PIB), WA (CBW, NWSPQ) L48 (N), CAN (N)
AMBR7 Ampelopsis brevipedunculata (Maxim.) Trautv. Amur peppervine CT (PINB), MA (P) L48 (I)
ANAR16 Anchusa arvensis (L.) M. Bieb. small bugloss WA (CBW) L48 (I), CAN (I)
ANOF Anchusa officinalis L. common bugloss OR (BDW, Q), WA (CBW, NWSPQ) L48 (I), CAN (I)
ANBI Andropogon bicornis L. barbas de indio HI (NW) L48 (I), PR (N), VI (N)
ANVI2 Andropogon virginicus L. broomsedge bluestem HI (NW) (I), L48 (N), HI (I), PR (N), CAN (N)
ANCR2 Anoda cristata (L.) Schltdl. crested anoda CO (BW) L48 (N), PR (N)
ANCO6 Anredera cordifolia (Ten.) Steenis heartleaf madeiravine HI (NW) L48 (I), HI (I), PR (I)
ANAR6 Anthemis arvensis L. corn chamomile CO (BW) L48 (I), HI (I), CAN (I)
ANCO2 Anthemis cotula L. stinking chamomile CO (BW), NV (NW) L48 (I), AK (I), HI (I), CAN (I)
ANSY Anthriscus sylvestris (L.) Hoffm. wild chervil MA (P), WA (CBW, NWSPQ) L48 (I), CAN (I), GL (I)
ARSE8 Araujia sericifera Brot. white bladderflower CA (BW) L48 (I)
ARMI2 Arctium minus Bernh. lesser burdock CO (CW), WY (NW) L48 (I), CAN (I), SPM (I)
ARCA45 Arctotheca calendula (L.) Levyns Capeweed CA (AW) L48 (I)
AREL4 Ardisia elliptica Thunb. shoebutton HI (NW) L48 (I), HI (I)
ARAB3 Artemisia absinthium L. absinthium CO (BW), ND (NW), WA (CCW) L48 (I), CAN (I)
ARHI3 Arthraxon hispidus (Thunb.) Makino small carpetgrass CT (PIB), MA (P) L48 (I), HI (I)
ARDO4 Arundo donax L. giant reed TX (NP) (NI), L48 (I), HI (I), PR (I), VI (I)
ASFI2 Asphodelus fistulosus L. onionweed AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NM (CAW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I)
AVST Avena sterilis L. animated oat AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I), CAN (W)
AZPI Azolla pinnata R. Br. feathered mosquitofern AL (CAW), CA (Q), MA (P), NC (CAW), OR (Q), SC (ILAP, PP), VT (CAW) L48 (I)
BASC5 Bassia scoparia (L.) A.J. Scott burningbush L48 (I), CAN (I)
KOSC Kochia scoparia (L.) Schrad. CT (PIB), OR (BDW, Q), WA (CBW, NWSPQ) CAN (I)
BERBE Berberis L.2 barberry MI (P) (I,N), L48 (I,N)
BETH Berberis thunbergii DC. Japanese barberry CT (INB), MA (P) L48 (I), CAN (I)
BEVU Berberis vulgaris L. common barberry CT (IB), MA (P), NH (PIS) L48 (I), CAN (I)
BEIN2 Berteroa incana (L.) DC. hoary alyssum MI (NW) L48 (I), AK (I), CAN (I)
BOFR2 Bocconia frutescens L. parrotweed HI (NW) HI (I), PR (N)
BRSY Brachypodium sylvaticum (Huds.) P. Beauv. slender false brome OR (BDW, Q) L48 (I)
BRASS2 Brassica L. mustard MI (NW) (I), L48 (I), GL (I,W)
BRRA2 Bromus racemosus L. bald brome L48 (I), AK (I), CAN (I)
BRCO4 Bromus commutatus Schrad. AR (NW) CAN (I)
BRSE Bromus secalinus L. rye brome AR (NW) L48 (I), AK (I), HI (I), CAN (I)
BRTE Bromus tectorum L. cheatgrass CO (CW), CT (PIB) L48 (I), AK (I), HI (I), CAN (I), GL (I)
BRAL4 Bryonia alba L. white bryony WA (CBW) L48 (I)
BUDA2 Buddleja davidii Franch.3 orange eye butterflybush OR (BDW, Q), WA (CCW) L48 (I), HI (I), PR (I), CAN (I)
BUUM Butomus umbellatus L. flowering rush CT (PIB), VT (CBW), WA (WAWQ) L48 (I), CAN (I)
CACA Cabomba caroliniana A. Gray Carolina fanwort CA (QW), CT (IB), ME (IAP), MA (P), VT (CAW), WA (CBW, WAWQ) L48 (N), CAN (N)
CAST Callitriche stagnalis Scop. pond water-starwort CT (PIB) L48 (I), CAN (I), SPM (I)
CASE13 Calystegia sepium (L.) R. Br. hedge false bindweed TX (NP) L48 (NI), AK (I), CAN (N), SPM (I)
CASES Calystegia sepium (L.) R. Br. ssp. sepium hedge false bindweed L48 (I), AK (I)
COSE14 Convolvulus sepium L. AR (NW)
CASA3 Cannabis sativa L. marijuana IL (NW), MN (PNW), MO (NW), PA (NW), WV (NW) L48 (I), HI (I), PR (I), CAN (I)
CAIM Cardamine impatiens L. narrowleaf bittercress CT (IB), MA (P) L48 (I), CAN (I)
CACH42 Cardaria chalepensis (L.) Hand.-Maz. lenspod whitetop L48 (I), CAN (I)
CACH10 Cardaria chalapensis (L.) Hand.-Maz., orth. var. AZ (PNW), CA (BW), OR (BDW, Q) CAN (I)
CADR Cardaria draba (L.) Desv. whitetop AK (NW), AZ (PNW, RNW), CA (BW), CO (BW), ID (NW), KS (NW), MT (CAT1), NV (NW), NM (CAW), OR (BDW, Q), SD (NW, RNPS), UT (NW), WA (CCW), WY (NW) L48 (I), CAN (I)
LEDR Lepidium draba L. IA (PRNW)
CAPU6 Cardaria pubescens (C.A. Mey.) Jarmolenko hairy whitetop AK (NW), AZ (PNW), CA (BW), HI (NW), OR (BDW, Q), WA (CCW), WY (NW) L48 (I), CAN (I)
CAHA13 Cardiospermum halicacabum L. balloon vine AL (CCW), AR (NW), SC (PP), TX (NP) L48 (I), HI (I), PR (N), VI (N)
CARDU Carduus L. plumeless thistle AR (NW), IA (PRNW) (I), L48 (I)
CAAC Carduus acanthoides L. spiny plumeless thistle AZ (PNW), CA (AW), CO (BW), MD (NW), MN (PNW), NE (NW), NC (CBW), OR (ADW, Q), SD (RNPS), WA (CBW, NWSPQ), WV (NW), WY (NW) L48 (I), CAN (I)
CACR2 Carduus crispus L. curly plumeless thistle WV (NW) L48 (I), CAN (I)
CANU4 Carduus nutans L. nodding plumeless thistle CA (AW), CO (BW), ID (NW), IL (NW), KS (NW), KY (NW), MD (NW), MN (PNW), MO (NW), NE (NW), NV (NW), NM (CBW), NC (CBW), ND (NW), OH (PNW), OK (NW), OR (BDW, Q), PA (NW), SD (RNPS), UT (NW), WA (CBW, NWSPQ), WV (NW), WY (NW) L48 (I), CAN (I)
CAPY2 Carduus pycnocephalus L. Italian plumeless thistle CA (CW), OR (BDW, Q), WA (CAW, NWSPQ) L48 (I), HI (I)
CATE2 Carduus tenuiflorus W. Curtis winged plumeless thistle CA (CW), OR (BDW, Q), WA (CAW, NWSPQ) L48 (I)
CAKO2 Carex kobomugi Ohwi Japanese sedge CT (PIB), MA (P) L48 (I)
CALA20 Carthamus lanatus L. woolly distaff thistle CA (BW), OR (ADW, Q) L48 (I), CAN (I)
CALAC3 Carthamus lanatus L. ssp. creticus (L.) Holmboe woolly distaff thistle L48 (I), CAN (I)
CABA5 Carthamus baeticus (Boiss. & Reut.) Nyman CA (BW), OR (ADW, Q)
CALE52 Carthamus leucocaulos Sm. whitestem distaff thistle CA (AW) L48 (I)
CAOX6 Carthamus oxyacanthus M. Bieb. jeweled distaff thistle L48 (I)
CAOX2 Carthamus oxyacantha M. Bieb., orth. var. AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
CACA19 Carum carvi L. caraway CO (BW) L48 (I), CAN (I), GL (I), SPM (I)
CASUA Casuarina Rumph. ex L. sheoak FL (PAP1) (I), L48 (I)
CATA5 Caulerpa taxifolia (Vahl) C. Agardh4 killer alga AL (CAW), MA (P), NC (CAW), OR (Q), SC (ILAP, PP), VT (CAW) L48 (I)
CEOR7 Celastrus orbiculatus Thunb. Oriental bittersweet CT (IB), MA (P), NH (PIS), NC (CCW), VT (CBW) L48 (I), CAN (I)
CEEC Cenchrus echinatus L. southern sandbur AZ (PNW, RGNW), CA (CW) (I,N), L48 (N), HI (I), PR (N), VI (N)
CELO3 Cenchrus longispinus (Hack.) Fernald mat sandbur CA (CW), WA (CBW) L48 (N), CAN (N)
CESP4 Cenchrus spinifex Cav. coastal sandbur L48 (N), PR (N), VI (N)
CEIN4 Cenchrus incertus M.A. Curtis AZ (PNW, RGNW), CA (CW)
CECA2 Centaurea calcitrapa L. red star-thistle AZ (PNW), CA (BW), NV (NW), NM (CAW), OR (ADW, Q), WA (CAW, NWSPQ) L48 (I), CAN (I)
CEDI3 Centaurea diffusa Lam. diffuse knapweed AZ (PNW, RNW), CA (AW), CO (BW), ID (NW), MT (CAT1), NE (NW), NV (NW), NM (CAW), ND (NW), OR (BDW, Q), SD (RNPS), UT (NW), WA (CBW, NWSPQ), WY (NW) L48 (I), CAN (I)
CEIB Centaurea iberica Trevir. ex Spreng. Iberian knapweed AZ (PNW), CA (AW), NV (NW), OR (ADW, Q) L48 (I)
CEJA Centaurea jacea L. brownray knapweed WA (CBW, NWSPQ) L48 (I), CAN (I), GL (I)
CEMA9 Centaurea macrocephala Puschk. ex Willd. bighead knapweed WA (CAW, NWSPQ) L48 (I), CAN (I)
CEME2 Centaurea melitensis L. Maltese star-thistle NV (NW), NM (CBW) L48 (I), HI (I), CAN (I)
CENI2 Centaurea nigra L. lesser knapweed WA (CBW, NWSPQ) L48 (I), CAN (I), SPM (I)
CENI3 Centaurea nigrescens Willd. Tyrol knapweed OR (BDW, Q), WA (CAW, NWSPQ) L48 (I), CAN (I)
CEPR2 Centaurea pratensis Thuill., non Salisb., nom. illeg. CO (AW), ID (NW), OR (BDW, Q)
CESO3 Centaurea solstitialis L. yellow star-thistle AZ (PNW, RNW), CA (CW), CO (AW), ID (NW), MT (CAT3), NV (NW), NM (CAW), ND (NW), OR (BDW, Q), SD (RNPS), UT (NW), WA (CBW) L48 (I), CAN (I)
CESTM Centaurea stoebe L. ssp. micranthos (Gugler) Hayek spotted knapweed L48 (I), HI (I), CAN (I)
CEBI2 Centaurea biebersteinii DC. CT (IB), MA (P), WA (CBW, NWSPQ)
CEMA4 Centaurea maculosa auct. non Lam. AZ (PNW, RNW), CA (AW), CO (BW), ID (NW), MT (CAT1), NE (NW), NV (NW), NM (CAW), ND (NW), OR (BDW, Q), SD (RNPS), UT (NW), WY (NW)
CESU Centaurea sulphurea Willd. sulphur knapweed AZ (PNW), CA (BW) L48 (I)
CEVI Centaurea virgata Lam. squarrose knapweed CO (AW), OR (ADW, Q) L48 (I)
CEVIS2 Centaurea virgata Lam. ssp. squarrosa (Willd.) Gugler squarrose knapweed L48 (I)
CESQ Centaurea squarrosa Willd. AZ (PNW), CA (AW), UT (NW)
CEVIS Centaurea virgata Lam. var. squarrosa (Willd.) Boiss. NV (NW)
CEPUP6 Centromadia pungens (Hook. & Arn.) Greene ssp. pungens common tarweed L48 (N)
HEPU5 Hemizonia pungens (Hook. & Arn.) Torr. & A. Gray OR (BDW, Q), WA (CCW)
CEHI3 Cereus hildmannianus K. Schum. hedge cactus HI (I), PR (I)
CEUR Cereus uruguayanus auct. non Kiesling HI (NW)
CHMI Chaenorhinum minus (L.) Lange dwarf snapdragon WA (NWSPQ) L48 (I), CAN (I)
CHJU Chondrilla juncea L. rush skeletonweed AZ (PNW), CA (AW), CO (AW), ID (NW), MT (CAT3), NV (NW), OR (BDW, Q), SD (RNPS), WA (CBW) L48 (I), CAN (I)
CHTE2 Chorispora tenella (Pall.) DC. crossflower CA (BW) L48 (I), CAN (W)
CHOD Chromolaena odorata (L.) R.M. King & H. Rob. Jack in the bush HI (NW) (I), L48 (N), PR (N), VI (N)
CHAC Chrysopogon aciculatus (Retz.) Trin. golden false beardgrass AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) (N), L48 (I), HI (I)
CIIN Cichorium intybus L. chicory CO (CW) L48 (I), CAN (I), SPM (I)
CIMA2 Cicuta maculata L. spotted water hemlock NV (NW) L48 (N), AK (N), CAN (N)
CIRSI Cirsium Mill. thistle AR (NW), IA (PRNW) (N), L48 (I,N), GL (I,N), NA (N)
CIAR4 Cirsium arvense (L.) Scop. Canada thistle AK (NW), AZ (PNW), CA (BW), CO (BW), CT (PIB), DE (NW), HI (NW), ID (NW), IL (NW), IN (NW), IA (PRNW), KS (NW), KY (NW), MD (NW), MI (NW), MN (PNW), MO (NW), MT (CAT1), NE (NW), NV (NW), NM (CAW), NC (CBW), ND (NW), OH (PNW), OK (NW), OR (BDW, Q), PA (NW), SD (NW, RNPS), UT (NW), WA (CCW), WI (NW), WY (NW) L48 (I), AK (I), CAN (I), GL (I), SPM (I)
CIJA2 Cirsium japonicum Fisch. ex DC. Japanese thistle CA (QW)
CIOC2 Cirsium ochrocentrum A. Gray yellowspine thistle CA (AW) L48 (N)
CIUN Cirsium undulatum (Nutt.) Spreng. wavyleaf thistle CA (AW) L48 (N), CAN (N)
CIVU Cirsium vulgare (Savi) Ten. bull thistle CO (BW), MD (NW), MN (PNW), NM (CBW), OR (BDW, Q), PA (NW), WA (CCW) L48 (I), AK (I), HI (I), CAN (I), SPM (I)
CILA8 Cirsium lanceolatum (L.) Scop., non Hill IA (PRNW)
CIREU Citrus reticulata Blanco ssp. unshiu (Marcow.) D.Rivera Núñez et al. Unshu orange SC (PP)
CLOR Clematis orientalis L. Oriental virginsbower CO (BW) L48 (I), CAN (I)
CLVI6 Clematis vitalba L. evergreen clematis OR (BDW, Q), WA (CCW) L48 (I), CAN (I)
CLHIH2 Clidemia hirta (L.) D. Don var. hirta soapbush HI (NW) L48 (N)
CNBE Cnicus benedictus L. blessed thistle SC (PP) L48 (I), CAN (I)
COGR9 Coccinia grandis (L.) Voigt ivy gourd HI (NW) (I), L48 (I), HI (I), VI (I)
COBE2 Commelina benghalensis L. jio AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) (I), L48 (I), HI (I), PR (I)
COMA2 Conium maculatum L. poison hemlock CO (CW), ID (NW), IA (SNW), NV (NW), NM (CBW), OH (PNW), OR (BDW, Q), WA (CCW) L48 (I), CAN (I)
COAR4 Convolvulus arvensis L. field bindweed AK (NW), AZ (PNW, RGNW), AR (NW), CA (CW), CO (CW), HI (NW), ID (NW), IA (PRNW), KS (NW), MI (NW), MN (PNW), MO (NW), MT (CAT1), NM (CCW), ND (NW), OR (BDW, Q), SD (RNPS), TX (NP), UT (NW), WA (CCW), WI (NW), WY (NW) L48 (I), HI (I), CAN (I)
COSQ Coronopus squamatus (Forssk.) Asch. greater swinecress AZ (PNW), CA (BW) L48 (I), CAN (I)
COJU2 Cortaderia jubata (Lem.) Stapf purple pampas grass HI (NW) L48 (I), HI (I)
CRHE5 Crassula helmsii A. Berger swamp stonecrop FL (PAP1), NC (CAW), WA (WAWQ)
CROTA Crotalaria L. rattlebox AR (NW) (I,N), L48 (I,N)
CRVU2 Crupina vulgaris Cass. common crupina AL (CAW), CA (AW, Q), CO (AW), FL (NW), ID (NW), MA (P), MN (PNW), MT (CAT3), NV (NW), NC (CAW), OR (BDW, Q), SC (PP), SD (RNPS), VT (CAW), WA (CAW, NWSPQ) L48 (I)
CUME Cucumis melo L. cantaloupe (I), L48 (I), PR (I), CAN (W)
CUMED Cucumis melo L. var. dudaim (L.) Naud. AZ (PNW), CA (AW)
CUMY Cucumis myriocarpus E. Mey. ex Naud. gooseberry gourd CA (BW) L48 (I)
CUAN4 Cupaniopsis anacardioides (A. Rich.) Radlk. carrotwood FL (NW) L48 (I)
CUSCU Cuscuta L.5, 6 dodder AL (CAW), AZ (PNW, RNW), AR (NW), CA (CW, Q), FL (NW), MA (P), MI (NW), MN (PNW), NC (CAW), OR (BDW, Q), SC (PP), SD (RNPS), VT (CAW) (I,N), L48 (I,N)
CUAP2 Cuscuta approximata Bab. alfalfa dodder WA (CCW) L48 (I), CAN (I)
CUJA Cuscuta japonica Choisy Japanese dodder TX (NP) L48 (I)
CURE Cuscuta reflexa Roxb. giant dodder CA (AW) L48 (I)
CYRE Cymbopogon refractus (R. Br.) A. Camus barbwire grass HI (NW) (I), HI (I)
CYLO11 Cynanchum louiseae Kartesz & Gandhi Louise's swallow-wort CT (IB), MA (P) L48 (I), CAN (I)
CYNI Cynanchum nigrum (L.) Pers., non Cav. NH (PIS)
VINI3 Vincetoxicum nigrum (L.) Moench VT (CBW)
CYRO8 Cynanchum rossicum (Kleopow) Borhidi European swallow-wort CT (IB), MA (P), NH (PIS) L48 (I), CAN (I)
CYVI3 Cynanchum vincetoxicum (L.) Pers. white swallow-wort L48 (I), CAN (I)
VIHI3 Vincetoxicum hirundinaria Medik. VT (CAW)
CYCA Cynara cardunculus L. cardoon CA (BW) L48 (I)
CYNOD Cynodon Rich. Bermudagrass CA (CW) (W), L48 (I)
CYDA Cynodon dactylon (L.) Pers.7 Bermudagrass AR (NW), UT (NW) (I), L48 (I), HI (I), PR (I), VI (I), CAN (W), SPM (W)
CYOF Cynoglossum officinale L. gypsyflower CO (BW), MT (CAT1), NV (NW), OR (BDW, Q), WA (CBW), WY (NW) L48 (I), CAN (I)
CYES Cyperus esculentus L. yellow nutsedge CA (BW), CO (BW), HI (NW), OR (BDW, Q), WA (CBW, Q) L48 (NI), HI (I), PR (I), VI (I), CAN (I)
CYRO Cyperus rotundus L. nutgrass AR (NW), CA (BW), OR (ADW, Q), WA (Q) (I), L48 (I), HI (I), PR (I), VI (I)
CYSC4 Cytisus scoparius (L.) Link Scotch broom CA (CW), HI (NW), ID (NW), OR (BDW, Q), WA (CBW, NWSPQ) L48 (I), AK (I), HI (I), CAN (I)
CYSCA Cytisus scoparius (L.) Link var. andreanus (Puiss.) Dippel Scotch broom HI (NW) L48 (I)
CYSCS2 Cytisus scoparius (L.) Link var. scoparius Scotch broom HI (NW) L48 (I), HI (I), CAN (I)
CYST7 Cytisus striatus (Hill) Rothm. striated broom OR (BDW, Q) L48 (I)
DAST Datura stramonium L. jimsonweed CT (PIB), PA (NW) L48 (I), HI (I), PR (I), VI (I), CAN (I)
DACA6 Daucus carota L. Queen Anne's lace IA (SNW), MI (NW), OH (PNW), WA (CBW, NWSPQ) (I), L48 (I), PR (I), CAN (I), SPM (I)
DICI2 Dichrostachys cinerea (L.) Wight & Arn. aroma HI (NW) L48 (I)
DINU6 Dichrostachys nutans Benth. HI (NW)
DIAB Digitaria abyssinica (Hochst. ex A. Rich.) Stapf African couchgrass MA (P) HI (I)
DISC5 Digitaria scalarum (Schweinf.) Chiov. AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
DIVE2 Digitaria velutina (Forssk.) P. Beauv. velvet crabgrass AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I)
DIAL2 Dioscorea alata L. water yam FL (NW) (I), L48 (I), PR (I), VI (I)
DIBU Dioscorea bulbifera L. air yam AL (CAW), FL (NW) (I), L48 (I), HI (I), PR (I)
DIFU2 Dipsacus fullonum L. Fuller's teasel CO (BW), IA (SNW), MO (NW), NM (CBW) L48 (I), CAN (I)
DILA4 Dipsacus laciniatus L. cutleaf teasel CO (BW), IA (SNW), MO (NW), OR (BDW, Q) L48 (I), CAN (I)
DISA9 Dipsacus sativus (L.) Honck. Indian teasel IA (SNW) L48 (I)
DRAR7 Drymaria arenarioides Humb. & Bonpl. ex Schult. [excluded] sandwort drymary AL (CAW), AZ (PNW), CA (Q), FL (NW), MA (P), MN (PNW), NM (CAW), NC (CAW), OR (Q), SC (PP), VT (CAW)
ECCR Echinochloa crus-galli (L.) P. Beauv. barnyardgrass AR (NW) (I), L48 (I), HI (I), PR (I), CAN (W), SPM (W)
ECPL Echium plantagineum L. salvation jane OR (ADW, Q) L48 (I), CAN (I)
ECVU Echium vulgare L. common viper's bugloss WA (CBW, NWSPQ) L48 (I), AK (I), CAN (W), SPM (I)
EGDE Egeria densa Planch. Brazilian waterweed AL (CCW), CT (PIB), ME (IAP), MA (P), SC (ILAP, PP), VT (CAW), WA (CBW, WAWQ) L48 (I), HI (I), PR (I), CAN (W)
ELDE3 Elodea densa (Planch.) Caspary OR (BDW, Q)
EICHH Eichhornia Kunth water hyacinth FL (PAP1) (I), L48 (I)
EIAZ2 Eichhornia azurea (Sw.) Kunth anchored water hyacinth AL (CAW), AZ (PNW), CA (Q), MA (P), NC (CAW), OR (Q), SC (ILAP, PP), TX (NP), VT (CAW) L48 (I), PR (I)
EICR Eichhornia crassipes (Mart.) Solms common water hyacinth AL (CCW), AZ (PNW, RGNW, RNW), CA (CW), CT (PINB), SC (ILAP, PP), TX (NP) (I), L48 (I), HI (I), PR (I), VI (I), CAN (W)
ELAN Elaeagnus angustifolia L. Russian olive CO (BW), CT (PIB), NM (CCW) L48 (I), CAN (I)
ELUM Elaeagnus umbellata Thunb. autumn olive CT (IB), MA (P), NH (PIS), WV (NW) L48 (I), HI (I), CAN (I)
ELMO5 Elephantopus mollis Kunth soft elephantsfoot HI (NW) (I), HI (I), PR (N), VI (N)
ELCI Elsholtzia ciliata (Thunb.) Hyl. crested latesummer mint CT (PIB) L48 (I), CAN (I)
ELRE4 Elymus repens (L.) Gould quackgrass L48 (I), AK (I), CAN (I), GL (I), SPM (I)
AGRE2 Agropyron repens (L.) P. Beauv. AK (NW), IA (PRNW), KS (NW), OR (BDW, Q), UT (NW), WY (NW)
ELRE3 Elytrigia repens (L.) Desv. ex Nevski AZ (PNW, RNW), CA (BW), CO (BW), HI (NW)
EMAU Emex australis Steinh. southern threecornerjack AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I)
EMSP Emex spinosa (L.) Campd. spiny threecornerjack AL (CAW), CA (Q), FL (NW), HI (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I), HI (I)
EPHI Epilobium hirsutum L. codlins and cream MA (P), WA (WAWQ) L48 (I), CAN (I)
EQTE Equisetum telmateia Ehrh. giant horsetail OR (BDW, Q) L48 (N), CAN (N)
ERCI6 Erodium cicutarium (L.) L'Hér. ex Aiton redstem stork's bill CO (BW) L48 (I), AK (I), HI (I), CAN (I), GL (I)
EUAL13 Euonymus alatus (Thunb.) Siebold burningbush MA (P) L48 (I), CAN (I)
EUAL8 Euonymus alata (Thunb.) Siebold, orth. var. CT (INB)
EUCY2 Euphorbia cyparissias L. cypress spurge CO (AW), CT (PIB), MA (P) L48 (I), CAN (I)
EUDE4 Euphorbia dentata Michx. toothed spurge ID (NW) L48 (I,N)
EUES Euphorbia esula L. leafy spurge AK (NW), AZ (PNW), CA (AW), CO (BW), CT (IB), HI (NW), ID (NW), IA (PRNW), KS (NW), MA (P), MN (PNW), MT (CAT1), NE (NW), NV (NW), NM (CAW), ND (NW), OR (BDW, Q), SD (NW, RNPS), UT (NW), WA (CBW, NWSPQ), WI (NW), WY (NW) L48 (I), CAN (I)
EUESE Euphorbia esula L. var. esula leafy spurge L48 (I), CAN (I)
EUPS2 Euphorbia pseudovirgata (Schur) Soó SD (RNPS)
EUHE4 Euphorbia heterophylla L. Mexican fireplant (I), L48 (N), HI (I), PR (N), VI (N)
EUPR5 Euphorbia prunifolia Jacq. FL (NW), SC (PP)
EUMY2 Euphorbia myrsinites L. myrtle spurge CO (AW), OR (BDW, Q) L48 (I), CAN (I)
EUOB4 Euphorbia oblongata Griseb. eggleaf spurge CA (BW), WA (CAW, NWSPQ) L48 (I)
EUSE12 Euphorbia serrata L. serrate spurge CA (AW) L48 (I)
EUTE10 Euphorbia terracina L. Geraldton carnation weed CA (QW) L48 (I)
EUMU Euryops multifidus (Thunb.) DC. hawk's eye L48 (I)
EUSUV Euryops subcarnosus DC. ssp. vulgaris B. Nord AZ (RNW)
FAVI Fatoua villosa (Thunb.) Nakai hairy crabweed AL (CCW) L48 (I), HI (I), PR (I)
FEFI Festuca filiformis Pourr. fineleaf sheep fescue MA (P) L48 (I), CAN (I), SPM (I)
FRAL4 Frangula alnus Mill. glossy buckthorn CT (INB), MA (P) L48 (I), CAN (I)
RHFR Rhamnus frangula L. MN (RNW), NH (PIS), VT (CBW)
FRGR3 Froelichia gracilis (Hook.) Moq. slender snakecotton CT (PIB) L48 (N), CAN (I)
GAOF Galega officinalis L. professor-weed AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NV (NW), NC (CAW), OR (Q), PA (NW), SC (PP), VT (CAW), WA (CAW, NWSPQ) L48 (I), CAN (I)
GATE2 Galeopsis tetrahit L. brittlestem hempnettle AK (NW) L48 (I), AK (I), CAN (I), SPM (I)
GAPA2 Galinsoga parviflora Cav. gallant soldier AK (NW) L48 (I), HI (I), PR (I), CAN (I)
GEMO2 Genista monspessulana (L.) L.A.S. Johnson French broom CA (CW), OR (BDW) L48 (I)
CYMO5 Cytisus monspessulanus L. HI (NW), OR (Q)
GERO Geranium robertianum L. Robert geranium WA (CBW) L48 (NI), AK (I), CAN (N), SPM (N)
GLFL Glaucium flavum Crantz yellow hornpoppy MA (P) L48 (I), CAN (W)
GLHE2 Glechoma hederacea L. ground ivy CT (PIB) L48 (I), AK (I), CAN (I)
GLCL3 Glossostigma cleistanthum W.R. Barker Mudmats WA (WAWQ) L48 (I)
GLDI Glossostigma diandrum (L.) Kunze [excluded] mudmats WA (WAWQ)
GLMA3 Glyceria maxima (Hartm.) Holmb. reed mannagrass CT (PIB), MA (P) L48 (I), CAN (I)
GRBA Grevillea banksii R. Br. kahiliflower HI (NW) HI (I)
GYPA Gypsophila paniculata L. baby's breath CA (BW), WA (CCW) L48 (I), CAN (I)
HAHA8 Halimodendron halodendron (Pall.) Voss common salttree CA (AW) L48 (I), CAN (I)
HAGL Halogeton glomeratus (M. Bieb.) C.A. Mey. saltlover AZ (PNW, RNW), CA (AW), CO (CW), HI (NW), NM (CBW), OR (BDW, Q) L48 (I)
HAMA7 Harrisia martinii (Labour.) Britton mooncactus HI (I)
ERMA16 Eriocereus martinii (Labour.) Riccob. HI (NW)
HEHE Hedera helix L.8 English ivy OR (BDW, Q), WA (CCW) L48 (I), HI (I), CAN (I)
HEHI12 Hedera hibernica (G. Kirchn.) Bean9 Atlantic Ivy WA (CCW) L48 (I)
HEAN3 Helianthus annuus L. common sunflower IA (SNW) L48 (N), AK (I), HI (I), PR (I), CAN (I), SPM (I)
HECI Helianthus ciliaris DC. Texas blueweed AZ (PNW, RNW), AR (NW), CA (AW), OR (ADW, Q), SC (PP), WA (CAW, NWSPQ) L48 (N)
HEMA17 Heracleum mantegazzianum Sommier & Levier giant hogweed AL (CAW), CA (Q), CT (PIB), FL (NW), MA (P), MN (PNW), NH (PIS), NC (CAW), OR (ADW, Q), PA (NW), SC (PP), VT (CAW), WA (CAW, NWSPQ) L48 (I), CAN (I)
HEMA3 Hesperis matronalis L. dames rocket CO (BW), CT (IB), MA (P) L48 (I), AK (I), CAN (I)
HECO10 Heteropogon contortus (L.) P. Beauv. ex Roem. & Schult. tanglehead CA (AW) L48 (N), HI (N), PR (N), VI (N)
HITR Hibiscus trionum L. flower of an hour CO (BW), WA (NWSPQ) L48 (I), CAN (I)
HIERA Hieracium L.10 hawkweed WA (CCW) (I,N), L48 (I,N), GL (I,N)
HIAT2 Hieracium atratum Fr. polar hawkweed WA (CBW)
HIAU Hieracium aurantiacum L. orange hawkweed CO (AW), ID (NW), MT (CAT2), OR (ADW, Q), WA (CBW, NWSPQ) L48 (I), AK (I), CAN (I), SPM (I)
HICA10 Hieracium caespitosum Dumort. meadow hawkweed WA (CBW, NWSPQ) L48 (I), CAN (I)
HIPR Hieracium pratense Tausch ID (NW), MT (CAT2), OR (ADW, Q)
HIFL3 Hieracium ×floribundum Wimm. & Grab. (pro sp.) [caespitosum × lactucella] hawkweed MT (CAT2), OR (ADW, Q), WA (CAW, NWSPQ) L48 (I), CAN (I), SPM (I)
HIGL3 Hieracium glomeratum Froel. queen-devil hawkweed WA (CBW) L48 (I)
HILA4 Hieracium laevigatum Willd. smooth hawkweed WA (CBW) L48 (N)
HIPI Hieracium pilosella L. mouseear hawkweed OR (ADW, Q), WA (CBW, NWSPQ) L48 (I), AK (I), CAN (I), SPM (I)
HIPI2 Hieracium piloselloides Vill. tall hawkweed MT (CAT2), OR (ADW, Q) L48 (I), CAN (I)
HOGL2 Hoffmannseggia glauca (Ortega) Eifert Indian rushpea L48 (N)
HODE Hoffmannseggia densiflora Benth. KS (NW)
HUJA Humulus japonicus Siebold & Zucc. Japanese hop CT (PIB), MA (P) L48 (I), CAN (I)
HYVE3 Hydrilla verticillata (L. f.) Royle waterthyme AL (CAW), AZ (PNW), CA (AW, NAW, Q), CO (AW), CT (IB), FL (PAP1), ME (IAP), MA (P), MS (NW), NV (NW), NM (CAW), NC (CAW), OR (ADW, Q), SC (ILAP, PP), TX (NP), VT (CAW), WA (CAW, WAWQ) L48 (I)
HYMO6 Hydrocharis morsus-ranae L. common frogbit CA (AW), ME (IAP), VT (CBW), WA (WAWQ) L48 (I), CAN (I)
HYPO3 Hygrophila polysperma (Roxb.) T. Anderson Indian swampweed AL (CAW), CA (Q), FL (PAP2), MA (P), NC (CAW), OR (Q), SC (ILAP, PP), VT (CAW) L48 (I)
HYNI Hyoscyamus niger L. black henbane CA (CW), CO (BW), ID (NW), NV (NW), NM (CAW), WA (CCW) L48 (I), CAN (I)
HYPE Hypericum perforatum L. common St. Johnswort CA (CW), CO (CW), MT (CAT1), NV (NW), OR (BDW), SD (RNPS), WA (CCW), WY (NW) L48 (I), HI (I), CAN (I), SPM (I)
HYRA3 Hypochaeris radicata L. hairy cat's ear WA (CBW) L48 (I), AK (I), HI (I), CAN (I), SPM (I)
HYPE3 Hyptis pectinata (L.) Poit. comb bushmint HI (NW) (I), L48 (I), HI (I), PR (N), VI (N)
HYSU3 Hyptis suaveolens (L.) Poit. pignut HI (NW) HI (I), PR (N), VI (N)
IMGL Impatiens glandulifera Royle ornamental jewelweed CT (PIB), OR (BDW, Q), WA (CBW, NWSPQ) L48 (I), CAN (I)
IMBR Imperata brasiliensis Trin. Brazilian satintail AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), MS (NW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I), PR (I)
IMBR2 Imperata brevifolia Vasey California satintail CA (BW) L48 (N)
IMCY Imperata cylindrica (L.) P. Beauv.11 cogongrass AL (CAW), CA (Q), FL (NW), HI (NW), MN (PNW), MS (NW), NC (CAW), OR (Q), SC (PP), VT (CAW) (NI), L48 (I)
IPOMO Ipomoea L.12 morning-glory AZ (PNW), AR (NW) (I), L48 (I,N)
IPAQ Ipomoea aquatica Forssk. swamp morning-glory AL (CAW), CA (Q), FL (PAP1), MA (PR), NC (CAW), OR (Q), SC (ILAP, PP), TX (NP), VT (CAW) (I), L48 (I), HI (I), PR (I)
IPCAF Ipomoea carnea Jacq. ssp. fistulosa (Mart. ex Choisy) D. Austin gloria de la manana (I), L48 (I), PR (I), VI (I)
IPFI2 Ipomoea fistulosa Mart. ex Choisy FL (PAP1)
IPTR2 Ipomoea triloba L. littlebell AZ (PNW, RNW), FL (NW), SC (PP) (I), L48 (I), HI (I), PR (N), VI (N)
IPTU3 Ipomoea turbinata Lag. lilacbell L48 (I)
CAMU25 Calonyction muricatum (L.) G. Don AR (NW), SC (PP)
IRDO Iris douglasiana Herb. Douglas iris CA (CW) L48 (N)
IRMI Iris missouriensis Nutt. Rocky Mountain iris CA (CW) L48 (N), CAN (N)
IRPS Iris pseudacorus L. paleyellow iris CT (IB), MA (P), MT (CAT3), NH (PIS), OR (BDW, Q), WA (CCW) L48 (I), CAN (I)
ISTI Isatis tinctoria L. Dyer's woad AZ (PNW), CA (BW), CO (AW), ID (NW), MT (CAT2), NV (NW), NM (CAW), OR (BDW, Q), UT (NW), WA (CAW, NWSPQ), WY (NW) L48 (I), CAN (W)
ISRU Ischaemum rugosum Salisb. ribbed murainagrass AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) (N), L48 (I)
IVAX Iva axillaris Pursh povertyweed CA (CW) L48 (N), CAN (N)
LATAP Lactuca tatarica (L.) C.A. Mey. var. pulchella (Pursh) Breitung blue lettuce L48 (N), AK (N), CAN (N)
LAPU Lactuca pulchella (Pursh) DC. AK (NW)
LAGAR Lagarosiphon Harv. oxygen-weed FL (PAP1), NC (CAW)
LAMA15 Lagarosiphon major (Ridley) Moss oxygen-weed AL (CAW), CA (Q), MA (P), OR (Q), SC (ILAP, PP), TX (NP), VT (CAW), WA (WAWQ)
LAMO5 Lagascea mollis Cav. silkleaf HI (NW) L48 (I), PR (I), VI (I)
LAPU12 Landoltia punctata (G. Mey.) D.H. Les & D.J. Crawford dotted duckmeat L48 (N), HI (N), PR (N)
SPOL2 Spirodela oligorrhiza (Kurz) Hegelm. TX (NP)
LELA2 Lepidium latifolium L. broadleaved pepperweed AK (NW), CA (BW), CO (BW), CT (IB), HI (NW), ID (NW), MA (P), MT (CAT2), NV (NW), NM (CAW), OR (BDW, Q), SD (RNPS), UT (NW), WA (CBW, NWSPQ), WY (NW) L48 (I), CAN (I)
LECH2 Leptochloa chinensis (L.) Nees [excluded] Chinese sprangletop AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
LEHO7 Lepyrodiclis holosteoides (C.A. Mey.) Fenzl ex Fisch. & C.A. Mey. false jagged-ckickweed WA (CBW) L48 (I)
LECU Lespedeza cuneata (Dum. Cours.) G. Don sericea lespedeza CO (AW), KS (NW) L48 (I), HI (I), CAN (I)
LEVU Leucanthemum vulgare Lam. oxeye daisy WA (CBW, NWSPQ) L48 (I), AK (I), HI (I), CAN (I), SPM (I)
CHLE80 Chrysanthemum leucanthemum L. CO (BW), MT (CAT1), WY (NW)
CHLEP Chrysanthemum leucanthemum L. var. pinnatifidum Lecoq & Lamotte OH (PNW)
LIOB Ligustrum obtusifolium Siebold & Zucc. border privet CT (PIB), MA (P), NH (PIS) L48 (I)
LIOV Ligustrum ovalifolium Hassk. California privet CT (PINB) L48 (I), PR (I), CAN (I)
LIVU Ligustrum vulgare L. European privet CT (PINB) L48 (I), CAN (I)
LISP2 Limnobium spongia (Bosc) Rich. ex Steud. American spongeplant CA (QW) L48 (N)
LIFL5 Limnocharis flava (L.) Buchenau [excluded] yellow velvetleaf FL (PAP1)
LIIN5 Limnophila indica (L.) Druce Indian marshweed CA (QW) (N), L48 (I)
LISE3 Limnophila sessiliflora (Vahl) Blume Asian marshweed AL (CAW), CA (Q), FL (PAP2), MA (P), NC (CAW), OR (Q), SC (ILAP, PP), VT (CAW) L48 (I)
LIDA Linaria dalmatica (L.) Mill. Dalmatian toadflax CO (BW), ID (NW), MT (CAT1), NV (NW), OR (BDW, Q), SD (RNPS), WY (NW) L48 (I), CAN (I)
LIDAD Linaria dalmatica (L.) Mill. ssp. dalmatica Dalmatian toadflax WA (CBW) L48 (I), CAN (I)
LIGED Linaria genistifolia (L.) Mill. ssp. dalmatica (L.) Maire & Petitm. AZ (PNW, RNW), CA (AW), NM (CAW), ND (NW), WA (NWSPQ) CAN (I)
LIGE Linaria genistifolia (L.) Mill. broomleaf toadflax CO (BW) L48 (I)
LIVU2 Linaria vulgaris Mill. butter and eggs ID (NW), MT (CAT1), NV (NW), NM (CAW), OR (BDW, Q), SD (RNPS), WA (CCW), WY (NW) L48 (I), AK (I), CAN (I), GL (I), SPM (I)
LOTE2 Lolium temulentum L. Darnel ryegrass AR (NW), SC (PP) L48 (I), AK (I), HI (I), CAN (I)
LOBE Lonicera ×bella Zabel [morrowii × tatarica] showy fly honeysuckle CT (IB), MA (P), NH (PIS), VT (CBW) L48 (I), CAN (I)
LOJA Lonicera japonica Thunb. Japanese honeysuckle CT (IB), MA (P), NH (PIS), VT (CBW) L48 (I), HI (I), PR (I), CAN (I)
LOMA6 Lonicera maackii (Rupr.) Herder Amur honeysuckle CT (IB), MA (P), VT (CBW) L48 (I), CAN (I)
LOMO2 Lonicera morrowii A. Gray Morrow's honeysuckle CT (IB), MA (P), NH (PIS), VT (CBW) L48 (I), CAN (I)
LOTA Lonicera tatarica L. Tatarian honeysuckle CT (PIB), MA (P), NH (PIS), VT (CBW) L48 (I), AK (I), CAN (I)
LOXY Lonicera xylosteum L. dwarf honeysuckle CT (PIB) L48 (I), CAN (I)
LUGRG2 Ludwigia grandiflora (Michx.) Greuter & Burdet ssp. grandiflora large-flower primrose-willow L48 (I)
LUUR Ludwigia uruguayensis (Camb.) H. Hara SC (PP)
LUGRH Ludwigia grandiflora (Michx.) Greuter & Burdet ssp. hexapetala (Hook. & Arn.) G.L. Nesom & Kartesz large-flower primrose-willow L48 (I)
LUHE5 Ludwigia hexapetala (Hook. & Arn.) Zardini, Gu & P.H. Raven NC (CBW), SC (ILAP, PP), WA (CBW, WAWQ)
LYFL3 Lychnis flos-cuculi L. ragged robin CT (PIB) L48 (I), CAN (I)
LYFE4 Lycium ferocissimum Miers African boxthorn L48 (I)
LYFE3 Lycium ferrocissimum Miers, orth. var. AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
LYJA Lygodium japonicum (Thunb.) Sw. Japanese climbing fern AL (CBW), FL (NW) L48 (I), HI (I), PR (I)
LYMI Lygodium microphyllum (Cav.) R. Br. small-leaf climbing fern AL (CAW), FL (NW) (N), L48 (I)
LYNU Lysimachia nummularia L. creeping jenny CT (PINB), MA (P) L48 (I), CAN (I)
LYVU Lysimachia vulgaris L. garden yellow loosestrife CT (PIB), WA (CBW, WAWQ) L48 (I), CAN (I)
LYTHR Lythrum L.13, 14, 15 loosestrife MI (SP), NC (CBW), WI (NUW) (I,N), L48 (I,N)
LYSA2 Lythrum salicaria L.16, 17, 18, 19 purple loosestrife AL (CBW), AZ (PNW), AR (NW), CA (BW), CO (AW), CT (IB), FL (PAP1), ID (NW), IN (PR), IA (SNW), MA (P), MN (PNW), MO (NW), MT (CAT2), NE (NW), NV (NW), NM (CAW), ND (NW), OH (PNW), OR (BDW, Q), PA (NW), SC (ILAP, PP), SD (NW, RNPS), TN (PP), TX (NP), UT (NW), VT (CBW), VA (NW), WA (CBW, Q), WY (NW) L48 (I), CAN (I), SPM (I)
LYVI3 Lythrum virgatum L.18, 19 European wand loosestrife IA (SNW), MN (PNW), MT (CAT2), NE (NW), NV (NW), ND (NW), SD (RNPS), TN (PP), VA (NW), WA (CBW, Q) L48 (I)
MAHON Mahonia Nutt.2 barberry MI (P) (N), L48 (I,N)
MAAL4 Malachra alceifolia Jacq. yellow leafbract HI (NW) L48 (I), HI (I), PR (N), VI (N)
MALE3 Malvella leprosa (Ortega) Krapov. alkali mallow CA (CW) L48 (N)
MAQU Marsilea quadrifolia L. European waterclover CT (PIB) L48 (I), CAN (N)
MEPO3 Medicago polymorpha L. burclover AZ (PNW, RGNW) (I), L48 (I), AK (I), HI (I), CAN (I)
MEVE3 Medinilla venosa (Blume) Blume holdtight HI (NW) HI (I)
MEQU Melaleuca quinquenervia (Cav.) S.F. Blake punktree AL (CAW), CA (Q), FL (NW, PAP1), MA (P), NC (CAW), OR (Q), SC (ILAP, PP), TX (NP), VT (CAW) (I), L48 (I), HI (I), PR (I)
MELAS Melastoma L. melastoma HI (NW) (I)
MEMA Melastoma malabathricum L. Malabar melastome AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) (N), HI (I)
MICON Miconia Ruiz & Pav. johnnyberry HI (NW) (N)
MIVI Microstegium vimineum (Trin.) A. Camus Nepalese browntop AL (CCW), CT (IB), MA (P) L48 (I), PR (I)
MICO16 Mikania cordata (Burm. f.) B.L. Rob. [excluded] heartleaf hempvine AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
MIMI5 Mikania micrantha Kunth mile-a-minute AL (CAW), CA (Q), FL (NW), HI (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I), PR (N)
MISC Mikania scandens (L.) Willd. climbing hempvine HI (NW) L48 (N), CAN (I)
MIVE3 Milium vernale M. Bieb. spring milletgrass ID (NW) L48 (I)
MIDI8 Mimosa diplotricha C. Wright giant false sensitive plant HI (NW), MA (P) (I), HI (I), PR (I)
MIIN80 Mimosa invisa Mart., non Mart. ex Colla AL (CAW), CA (Q), FL (NW), HI (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
MIPE2 Mimosa pellita Kunth ex Willd. lollipop mimosa L48 (N), PR (N)
MIPI Mimosa pigra auct. non L. AL (CAW), CA (Q), FL (NW, PAP1), HI (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
MINY Mirabilis nyctaginea (Michx.) MacMill. heartleaf four o'clock WA (CAW, NWSPQ) L48 (N), CAN (N)
MIFL3 Miscanthus floridulus (Labill.) Warb. ex K. Schum. & Lauterb. Pacific Island silvergrass HI (NW) (N), L48 (I)
MISA Miscanthus sacchariflorus (Maxim.) Franch. Amur silvergrass MA (P) L48 (I), CAN (I)
MISI Miscanthus sinensis Andersson Chinese silvergrass CT (PINB) L48 (I), CAN (I)
MOHA2 Monochoria hastata (L.) Solms [excluded] arrowleaf falsepickerelweed AL (CAW), CA (Q), FL (PAP1), MA (P), NC (CAW), OR (Q), SC (ILAP, PP), VT (CAW)
MOVA Monochoria vaginalis (Burm. f.) C. Presl ex Kunth heartshape false pickerelweed AL (CAW), CA (Q), FL (PAP1), MA (P), NC (CAW), OR (Q), SC (ILAP, PP), VT (CAW) L48 (I), HI (I)
MOHI Montanoa hibiscifolia (Benth.) Standl. treedaisy HI (NW) HI (I)
MORAE Moraea Mill. Cape tulip L48 (I)
HOMER Homeria Vent. AL (CAW), CA (Q), MA (P), MN (PNW), NC (CAW), OR (Q), VT (CAW)
MOCO8 Moraea collina Thunb. Cape tulip L48 (I)
HOCO6 Homeria collina (Thunb.) Salisb. AL (CAW), CA (Q), MA (P), MN (PNW), NC (CAW), OR (Q), VT (CAW)
MOFL2 Moraea flaccida (Sweet) Steud. one-leaf Cape tulip
HOFL4 Homeria flaccida Sweet AL (CAW), CA (Q), MA (P), MN (PNW), NC (CAW), OR (Q), VT (CAW)
MOOC2 Moraea ochroleuca (Salisb.) Drapiez apricot tulip
HOOC Homeria ochroleuca Salisb. AL (CAW), CA (Q), MA (P), MN (PNW), NC (CAW), OR (Q), VT (CAW)
MOPA8 Moraea pallida (Baker) Goldblatt yelow tulip
HOPA11 Homeria pallida Baker AL (CAW), CA (Q), MA (P), MN (PNW), NC (CAW), OR (Q), VT (CAW)
MOFA Morella faya (Aiton) Wilbur firetree HI (I)
MYFA Myrica faya Aiton HI (NW)
MUSC Muhlenbergia schreberi J.F. Gmel. nimblewill CA (BW) L48 (N), CAN (N)
MUKE Murdannia keisak (Hassk.) Hand.-Maz. wartremoving herb WA (WAWQ) L48 (I)
MYSC Myosotis scorpioides L. true forget-me-not CT (IB), MA (P) L48 (I), AK (I), CAN (I), SPM (I)
MYAQ2 Myriophyllum aquaticum (Vell.) Verdc. parrot feather watermilfoil AL (CCW), CT (PIB), ME (IAP), MA (P), VT (CAW), WA (CBW, WAWQ) L48 (I), HI (I), CAN (I)
MYHE2 Myriophyllum heterophyllum Michx. twoleaf watermilfoil CT (IB), ME (IAP), MA (P), VT (CAW) L48 (N), CAN (N)
MYSP2 Myriophyllum spicatum L. Eurasian watermilfoil AL (CCW), CO (BW), CT (IB), FL (PAP1), ID (NW), ME (IAP), MA (P), MT (CAT3), NV (NW), NM (CAW), NC (CBW), OR (BDW, Q), SC (ILAP, PP), SD (RNPS), TX (NP), VT (CBW), WA (CBW, WAWQ) L48 (I), AK (I), CAN (I)
NAMI Najas minor All. brittle waternymph AL (CCW), CT (PIB), ME (IAP), MA (P), SC (ILAP, PP), WA (WAWQ) L48 (I), CAN (I)
NAST3 Nardus stricta L. matgrass ID (NW), OR (ADW, Q) L48 (I), CAN (I), GL (I), SPM (I)
NATR3 Nassella trichotoma (Nees) Hack. serrated tussock AL (CAW), AZ (PNW), AR (NW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), TX (NP), VT (CAW) L48 (I)
STTR8 Stipa trichotoma Nees HI (NW)
NAMI2 Nasturtium microphyllum Boenn. ex Rchb. onerow yellowcress L48 (I), AK (I), HI (I), CAN (I), SPM (I)
ROMI3 Rorippa microphylla (Boenn. ex Rchb.) Hyl. ex Á. Löve & D. Löve CT (PIB)
NAOF Nasturtium officinale W.T. Aiton watercress L48 (I), AK (I), PR (I), VI (I), CAN (I), SPM (I)
RONA2 Rorippa nasturtium-aquaticum (L.) Hayek CT (PIB)
NEAL2 Nechamandra alternifolia (Roxb.) Thw. nechamandra FL (PAP1)
NELU Nelumbo lutea Willd. American lotus CT (PIB) L48 (N), CAN (N)
NERE Neyraudia reynaudiana (Kunth) Keng ex Hitchc. silkreed FL (NW) L48 (I)
NYME Nymphaea mexicana Zucc. yellow waterlily CA (BW) L48 (N), CAN (I)
NYOD Nymphaea odorata Aiton American white waterlily WA (CCW) L48 (N), AK (I), PR (N), CAN (N)
NYPE Nymphoides peltata (S.G. Gmel.) Kuntze yellow floatingheart CT (PIB), ME (IAP), MA (P), OR (ADW, Q), VT (CBW), WA (CBW, WAWQ) L48 (I), CAN (I)
OESI3 Oenothera sinuosa W.L. Wagner & Hoch wavyleaf beeblossom L48 (N)
GASI Gaura sinuata Nutt. ex Ser. CA (BW)
OESU3 Oenothera suffrutescens (Ser.) W.L. Wagner & Hoch scarlet beeblossom L48 (N), CAN (N)
GACO5 Gaura coccinea Nutt. ex Pursh CA (BW)
OEXE Oenothera xerogaura W.L. Wagner & Hoch Drummond's beeblossom L48 (N)
GADR Gaura drummondii (Spach) Torr. & A. Gray CA (BW)
ONAL5 Ononis alopecuroides L. foxtail restharrow CA (QW) L48 (I)
ONOPO Onopordum L. cottonthistle AR (NW) (W), L48 (I)
ONAC Onopordum acanthium L. Scotch cottonthistle AZ (PNW, RNW), CA (AW), CO (BW), CT (PIB), ID (NW), MO (NW), NV (NW), NM (CAW), OK (NW), OR (BDW, Q), UT (NW), WA (CBW, NWSPQ), WY (NW) L48 (I), CAN (W)
ONIL Onopordum illyricum L. Illyrian cottonthistle CA (AW) L48 (I)
ONTA Onopordum tauricum Willd. bull cottonthistle CA (AW), CO (BW) L48 (I)
OPAU10 Opuntia aurantiaca Lindl. tiger-pear AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
ORUM Ornithogalum umbellatum L. star of Bethlehem AL (CCW), CT (PINB) L48 (I), CAN (I)
OROBA Orobanche L.20, 21 broomrape AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) (N), L48 (I,N)
ORCO4 Orobanche cooperi (A. Gray) A. Heller desert broomrape CA (AW) L48 (N)
ORMI Orobanche minor Sm. hellroot OR (BDW, Q) L48 (I)
ORRA Orobanche ramosa L. hemp broomrape AZ (PNW), CA (AW), TX (NP) L48 (I)
ORLO3 Oryza longistaminata A. Chev. & Roehr. longstamen rice AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
ORPU13 Oryza punctata Kotzchy ex Steud. red rice AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
ORRU Oryza rufipogon Griffiths brownbeard rice AL (CAW), CA (BW, Q), FL (NW, PAP1), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I)
ORSA Oryza sativa L. rice AR (NW), SC (PP) (I), L48 (I), PR (I), VI (I)
OTAL Ottelia alismoides (L.) Pers. ducklettuce AL (CAW), CA (Q), MA (P), NC (CAW), OR (Q), SC (ILAP, PP), VT (CAW) L48 (I)
OXPA3 Oxyspora paniculata (D. Don) DC. bristletips HI (NW) HI (I)
PAGL17 Packera glabella (Poir.) C. Jeffrey butterweed L48 (N), CAN (W)
SEGL Senecio glabellus Poir. OH (PNW)
PACR15 Paederia cruddasiana Prain sewer vine FL (NW) L48 (I)
PAFO3 Paederia foetida L. stinkvine AL (CBW), FL (NW) L48 (I), HI (I)
PAAN4 Panicum antidotale Retz. blue panicum CA (BW) L48 (I), HI (I)
PAMI2 Panicum miliaceum L. proso millet CO (CW), OR (BDW, Q) L48 (I), HI (I), PR (I), VI (I), CAN (I)
PARE3 Panicum repens L. torpedo grass AL (CCW), AZ (PNW), HI (NW), TX (NP) (N), L48 (I), HI (I)
PASO2 Papaver somniferum L. opium poppy WV (NW) L48 (I), CAN (W), GL (W)
PASC6 Paspalum scrobiculatum L. kodomillet AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) (NI), L48 (I), HI (I)
PABI5 Passiflora bicornis Mill. wingleaf passionflower HI (I)
PAPU13 Passiflora pulchella Kunth HI (NW)
PATA6 Passiflora tarminiana Coppens & V.E. Barney banana passionflower L48 (I), HI (I)
PAMO20 Passiflora mollissima auct. non (Kunth) L.H. Bailey HI (NW)
PATRM Passiflora tripartita (Juss.) Poir. var. mollissima (Kunth) Holm-Niesen & P.M. Jørg. banana passionflower
PAMO5 Passiflora mollissima (Kunth) L.H. Bailey HI (NW)
PASA2 Pastinaca sativa L. wild parsnip OH (PNW) L48 (I), AK (I), CAN (W), SPM (W)
PATO2 Paulownia tomentosa (Thunb.) Siebold & Zucc. ex Steud. princesstree CT (PIB) L48 (I)
PEHA Peganum harmala L. harmal peganum AZ (PNW), CA (AW), CO (AW), NV (NW), NM (CBW), OR (ADW, Q) L48 (I)
PECI Pennisetum ciliare (L.) Link buffelgrass AZ (PNW, RGNW) (I), L48 (I), HI (I), PR (I), VI (I)
PECL2 Pennisetum clandestinum Hochst. ex Chiov. kikuyugrass AL (CAW), CA (CW, Q), FL (NW), MA (P), MN (PNW, Q), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I), HI (I), PR (I), VI (I)
PEMA80 Pennisetum macrourum Trin. African feathergrass AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I), HI (I)
PEPE24 Pennisetum pedicellatum Trin. Kyasuma grass AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I)
PEPO14 Pennisetum polystachion (L.) Schult. mission grass (I), L48 (I), HI (I), PR (I)
PEPO4 Pennisetum polystachyon (L.) Schult., orth. var. AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PESE3 Pennisetum setaceum (Forssk.) Chiov. crimson fountaingrass HI (NW) L48 (I), HI (I)
PHAR3 Phalaris arundinacea L. reed canarygrass CT (INB), MA (P), WA (CCW) L48 (N), AK (I), CAN (N), SPM (I)
PHAM2 Phellodendron amurense Rupr. Amur corktree MA (P) L48 (I), CAN (I)
PHAU7 Phragmites australis (Cav.) Trin. ex Steud.22 common reed AL (CCW), CT (IB), MA (P), SC (PP), VT (CBW), WA (CCW) (I,N), L48 (N), HI (I), CAN (N)
PHCO15 Phragmites communis Trin. SC (ILAP)
PHTE5 Phyllanthus tenellus Roxb. Mascarene Island leaf-flower AL (CCW) L48 (I), HI (I), PR (I)
PHUR Phyllanthus urinaria L. chamber bitter AL (CCW) (NI), L48 (I), PR (I)
PHLO4 Physalis longifolia Nutt. longleaf groundcherry CA (AW) L48 (N), CAN (N)
PHVI17 Physalis viscosa L. starhair groundcherry CA (BW) L48 (N)
PIHI Picris hieracioides L. hawkweed oxtongue WA (CBW) L48 (NI), AK (N), HI (I), CAN (I)
PIAD Piper aduncum L. higuillo de hoja menuda HI (NW) L48 (N), PR (N), VI (N)
PIST2 Pistia stratiotes L. water lettuce AL (CCW), CA (BW), CT (PIB), FL (PAP2), SC (ILAP, PP), TX (NP) L48 (N), HI (I), PR (N), VI (N)
PIUN2 Pittosporum undulatum Vent. Australian cheesewood HI (NW) L48 (I), HI (I)
PLAR3 Plantago aristata Michx. largebracted plantain AR (NW) L48 (N), HI (I), CAN (I)
PLLA Plantago lanceolata L. narrowleaf plantain AR (NW), IA (SNW) (I), L48 (I), AK (I), HI (I), PR (I), CAN (I), GL (I), SPM (I)
POCO Poa compressa L. Canada bluegrass CT (PIB) L48 (I), AK (I), HI (I), CAN (I), SPM (I)
POAME Polygonum amphibium L. var. emersum Michx. longroot smartweed CA (CW) L48 (N), CAN (N)
POBO10 Polygonum ×bohemicum (J. Chrtek & Chrtková) Zika & Jacobson [cuspidatum × sachalinense] Bohemian knotweed WA (CBW, NWSPQ) CAN (I)
POCE4 Polygonum cespitosum Blume, nom. inq. Oriental lady's thumb L48 (I), CAN (I)
POCA49 Polygonum caespitosum Blume, orth. var. CT (PIB) CAN (I)
POCU6 Polygonum cuspidatum Siebold & Zucc. Japanese knotweed AL (CCW), CA (BW), CT (IB), MA (P), NH (PIS), OR (BDW, Q), WA (CBW, NWSPQ) L48 (I), AK (I), CAN (I), SPM (I)
FAJA2 Fallopia japonica (Houtt.) Ronse Decr. VT (CBW) CAN (I)
POPE10 Polygonum perfoliatum L. Asiatic tearthumb AL (CAW), CT (IB), MA (P), NC (CAW), OH (PNW), PA (NW), SC (PP) L48 (I)
POPO5 Polygonum polystachyum Wall. ex Meisn. cultivated knotweed CA (BW), OR (BDW, Q), WA (CBW, NWSPQ) L48 (I), CAN (I), SPM (I)
POSA4 Polygonum sachalinense F. Schmidt ex Maxim. giant knotweed CA (BW), CT (PIB), OR (BDW, Q), WA (CBW, NWSPQ) L48 (I), AK (I), CAN (I)
PORO12 Pontederia rotundifolia L. f. tropical pickerelweed FL (PAP1)
POAL7 Populus alba L. white poplar CT (PIB) L48 (I), CAN (I)
POOL Portulaca oleracea L. little hogweed AZ (PNW, RGNW) (NI), L48 (I,N), HI (I), PR (I), VI (I), CAN (NI)
POCR3 Potamogeton crispus L. curly pondweed AL (CCW), CT (IB), ME (IAP), MA (P), VT (CBW), WA (CCW) L48 (I), CAN (I)
PORE5 Potentilla recta L. sulphur cinquefoil CO (BW), MT (CAT1), NV (NW), OR (BDW, Q), WA (CBW) L48 (I), CAN (I)
PRLO Proboscidea louisianica (Mill.) Thell. ram's horn WA (NWSPQ) L48 (N), CAN (I)
PROSO Prosopis L. mesquite FL (NW) (I), L48 (I,N)
PRAL11 Prosopis alpataco Phil. AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRAR6 Prosopis argentina Burkart AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRBU2 Prosopis burkartii Muñoz AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRCA9 Prosopis caldenia Burkart AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRCA10 Prosopis calingastana Burkart cusqui AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRCA11 Prosopis campestris Griseb. AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRCA12 Prosopis castellanosii Burkart AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRDE4 Prosopis denudans Benth. AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PREL5 Prosopis elata (Burkart) Burkart AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRFA2 Prosopis farcta (Banks & Sol.) J.F. Macbr. Syrian mesquite AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I)
PRFE2 Prosopis ferox Griseb. AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRFI4 Prosopis fiebrigii Harms AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRHA4 Prosopis hassleri Harms ex Hassler AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRHU3 Prosopis humilis Gillies ex Hook. & Arn. AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRJU3 Prosopis juliflora (Sw.) DC. mesquite HI (NW) HI (I)
PRKU2 Prosopis kuntzei Harms ex Hassler AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRPA4 Prosopis pallida (Humb. & Bonpl. ex Willd.) Kunth kiawe AL (CAW), CA (Q), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) (I), HI (I), PR (I), VI (I)
PRPA10 Prosopis palmeri S. Watson AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRRE2 Prosopis reptans Benth. tornillo AL (CAW), CA (Q), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (N)
PRRO4 Prosopis rojasiana Burkart AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRRU4 Prosopis ruizlealii Burkart AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRRU5 Prosopis ruscifolia Griseb. AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRSE5 Prosopis sericantha Gillies ex Hook. & Arn. AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRST3 Prosopis strombulifera (Lam.) Benth. Argentine screwbean AL (CAW), CA (AW, Q), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I)
PRTO3 Prosopis torquata DC. AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PRVE Prosopis velutina Wooton velvet mesquite MA (P) L48 (N), HI (I)
PRAR4 Prosopis articulata S. Watson AL (CAW), CA (Q), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
PUMO Pueraria montana (Lour.) Merr. kudzu CT (PIB), FL (NW), MA (P) (I), L48 (I), HI (I)
PUMOL Pueraria montana (Lour.) Merr. var. lobata (Willd.) Maesen & S.M. Almeida ex Sanjappa & Predeep kudzu MS (NW), WA (CAW, NWSPQ) (I), L48 (I), HI (I)
PULO Pueraria lobata (Willd.) Ohwi IL (NW), KS (NW), KY (NW), MO (NW), OR (ADW, Q), PA (NW), TX (NP)
PUTH Pueraria thunbergiana (Siebold & Zucc.) Benth. WV (NW)
PUPH2 Pueraria phaseoloides (Roxb.) Benth. tropical kudzu HI (NW) HI (I), PR (I), VI (I)
RAAC3 Ranunculus acris L. tall buttercup MT (CAT2) L48 (NI), AK (I), CAN (I), GL (N?), SPM (I)
RAFI Ranunculus ficaria L. fig buttercup CT (IB), MA (P) L48 (I), CAN (I)
RARE3 Ranunculus repens L. creeping buttercup MA (P) L48 (I), AK (I), HI (I), CAN (I), GL (I), SPM (I)
RHAMN Rhamnus L.23 buckthorn IA (PRNW) (I,N), L48 (I,N)
RHCA3 Rhamnus cathartica L. common buckthorn CT (IB), MA (P), MN (RNW), NH (PIS), VT (CBW) L48 (I), CAN (I)
RHTO10 Rhodomyrtus tomentosa (Aiton) Hassk. rose myrtle L48 (I), HI (I)
RHTO Rhodomyrtus tomentosus (Aiton) Hassk., orth. var. FL (NW), HI (NW) HI (I)
RIBES Ribes L.24 currant MI (PP) (I,N), L48 (I,N)
ROPS Robinia pseudoacacia L. black locust CT (INB), MA (P) L48 (N), CAN (I)
ROAM Rorippa amphibia (L.) Besser great yellowcress MA (P) L48 (I), CAN (I)
ROAU Rorippa austriaca (Crantz) Besser Austrian yellowcress AK (NW), AZ (PNW), CA (BW), NV (NW), WA (CBW) L48 (I), CAN (I)
ROSY Rorippa sylvestris (L.) Besser creeping yellowcress CA (QW), NC (CBW), OR (BDW, Q) L48 (I), AK (I), CAN (I), GL (I)
ROMU Rosa multiflora Thunb.25, 26 multiflora rose AL (CCW), CT (IB), IN (PR), IA (SNW), KY (NW), MA (P), MO (NW), NH (PIS), PA (NW), SD (RNPS), WV (NW), WI (NUW) L48 (I), CAN (I)
RORU Rosa rugosa Thunb. rugosa rose CT (PINB) L48 (I), AK (I), CAN (I), SPM (I)
ROCO6 Rottboellia cochinchinensis (Lour.) W.D. Clayton itchgrass AL (CAW), CA (Q), MA (P), MN (PNW), MS (NW), NC (CAW), OR (Q), SC (PP), TX (NP), VT (CAW) L48 (I), PR (I)
ROEX2 Rottboellia exaltata (L.) L. f. AR (NW), FL (NW)
RUAR2 Rubus argutus Link sawtooth blackberry HI (NW) L48 (N), HI (I)
RUAR9 Rubus armeniacus Focke Himalayan blackberry L48 (I), HI (I), CAN (I)
RUDI2 Rubus discolor Weihe & Nees OR (BDW, Q)
RUELO Rubus ellipticus Sm. var. obcordatus Focke yellow Himalayan raspberry HI (NW) HI (I)
RUFR80 Rubus fruticosus L. [excluded] shrubby blackberry AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
RUMO4 Rubus moluccanus L. [excluded] eelkek AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
RUNI4 Rubus niveus Thunb. snowpeaks raspberry HI (NW) L48 (I), HI (I)
RUPH Rubus phoenicolasius Maxim. wine raspberry CT (PIB), MA (P) L48 (I)
RUSI4 Rubus sieboldii Blume palmleaf dewberry HI (NW) HI (I)
RUMEX Rumex L. dock AR (NW) (I), GL (I,N)
RUAC3 Rumex acetosella L. common sheep sorrel CT (PIB), IA (SNW) L48 (I), AK (I), HI (I), CAN (I), GL (I), SPM (I)
RUAL4 Rumex altissimus Alph. Wood pale dock IA (SNW) L48 (N), CAN (N), SPM (N)
RUCR Rumex crispus L. curly dock IA (SNW) L48 (I), AK (I), HI (I), PR (I), CAN (I), SPM (I)
SASP Saccharum spontaneum L. wild sugarcane AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) (N), HI (I), PR (I)
SAGR Sagittaria graminea Michx. grassy arrowhead WA (CBW, WAWQ) L48 (N), CAN (N)
SASA7 Sagittaria sagittifolia L. [excluded] arrowhead AL (CAW), CA (Q), MA (P), NC (CAW), OR (Q), SC (ILAP, PP), VT (CAW)
SALSO Salsola L. Russian thistle AR (NW) (I,W), L48 (I)
SACO8 Salsola collina Pall. slender Russian thistle CA (QW) L48 (I), CAN (I)
SAKA Salsola kali L. Russian thistle HI (NW) L48 (I), CAN (W), SPM (W)
SAPA8 Salsola paulsenii Litv. barbwire Russian thistle CA (CW) L48 (I)
SATR12 Salsola tragus L. prickly Russian thistle CA (CW) L48 (I), HI (I), CAN (I)
SAKAT6 Salsola kali L. ssp. tenuifolia Moq. OH (PNW)
SAVE6 Salsola vermiculata L. shrubby Russian thistle AL (CAW), CA (AW, Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I)
SAAE Salvia aethiopis L. Mediterranean sage CA (BW), CO (AW), NV (NW), OR (BDW, Q), WA (CAW, NWSPQ) L48 (I)
SAPR2 Salvia pratensis L. introduced sage WA (CAW, NWSPQ) L48 (I), CAN (I)
SASC2 Salvia sclarea L. Europe sage WA (CAW, NWSPQ) L48 (I), CAN (W)
SAVI18 Salvia virgata Jacq. wand sage CA (AW) L48 (I)
SALVI2 Salvinia Ség.27, 28 watermoss FL (PAP1), NC (CAW), TX (NP) (I), L48 (I,W)
SAAU Salvinia auriculata Aubl. eared watermoss AL (CAW), CA (Q, QW), MA (P), OR (Q), SC (ILAP, PP), VT (CAW) PR (I)
SABI9 Salvinia biloba Raddi giant salvinia AL (CAW), CA (Q), MA (P), OR (Q), SC (ILAP, PP), VT (CAW)
SAHE7 Salvinia herzogii de la Sota giant salvinia AL (CAW), CA (Q), MA (P), OR (Q), SC (ILAP, PP), VT (CAW)
SAMO5 Salvinia molesta Mitchell kariba-weed AL (CAW), AZ (PNW, RGNW), CA (Q), CO (AW), CT (PIB), MA (P), MS (NW), NV (NW), OR (Q), SC (ILAP, PP), VT (CAW) L48 (I), HI (I)
SAOF4 Saponaria officinalis L. bouncingbet CO (BW) L48 (I), CAN (I)
SCTE Schinus terebinthifolius Raddi Brazilian peppertree FL (NW, PAP1), TX (NP) (I), L48 (I), HI (I), PR (I), VI (I)
SCOLY Scolymus L. goldenthistle AR (NW) L48 (I)
SCHI Scolymus hispanicus L. common goldenthistle CA (AW) L48 (I)
SECE Secale cereale L. cereal rye WA (CCW) L48 (I), AK (I), CAN (W), GL (W)
SEJA Senecio jacobaea L.29 stinking willie AZ (PNW), CA (BW), CO (AW), CT (PIB), ID (NW), MA (P), MT (CAT2), OR (BDW, Q), WA (CBW, NWSPQ, Q) L48 (I), CAN (I), SPM (I)
SEMA15 Senecio madagascariensis Poir. Madagascar ragwort HI (NW) HI (I)
SESQ Senecio squalidus L. oxford ragwort CA (BW) L48 (I), CAN (N)
SEVU Senecio vulgaris L. old-man-in-the-Spring WA (CCW) L48 (I), AK (I), HI (I), CAN (I), GL (I), SPM (I)
SEHE8 Sesbania herbacea (Mill.) McVaugh bigpod sesbania L48 (N), PR (N), CAN (W)
SEEX Sesbania exaltata (Raf.) Rydb. ex A.W. Hill AR (NW)
SEFA Setaria faberi Herrm. Japanese bristlegrass AR (NW), CA (BW), KY (NW) L48 (I), CAN (I)
SEPU8 Setaria pumila (Poir.) Roem. & Schult. yellow foxtail MA (P) (I), L48 (I), HI (I), CAN (I), SPM (W)
SEPUP3 Setaria pumila (Poir.) Roem. & Schult. ssp. pallidefusca (Schumach.) B.K. Simon cattail grass L48 (I)
SEPA82 Setaria pallidifusca (Schumach.) Stapf & C.E. Hubbard, orth. var. AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
SIAN Sicyos angulatus L. oneseed bur cucumber DE (NW), IN (NW), KY (NW) L48 (N), CAN (N)
SILAA3 Silene latifolia Poir. ssp. alba (Mill.) Greuter & Burdet bladder campion WA (CCW) L48 (I), AK (I)
SIPE2 Silphium perfoliatum L. cup plant CT (PIB) L48 (N), CAN (N)
SILYB Silybum Adans. milkthistle AR (NW) (I), L48 (I)
SIMA3 Silybum marianum (L.) Gaertn. blessed milkthistle OR (BDW), WA (CAW, NWSPQ) L48 (I), CAN (I)
SINAP Sinapis L. mustard MI (NW) (I), L48 (I), GL (I)
SIAR4 Sinapis arvensis L. charlock mustard L48 (I), AK (I), HI (I), VI (I), CAN (I), GL (I), SPM (I)
SIARA Sinapis arvensis L. ssp. arvensis wild mustard L48 (I), AK (I), HI (I), VI (I), CAN (I), GL (I), SPM (I)
BRAR11 Brassica arvensis (L.) Rabenh., non L., nom. illeg. IA (SNW)
BRKAP2 Brassica kaber (DC.) L.C. Wheeler var. pinnatifida (Stokes) L.C. Wheeler OH (PNW)
SOCA19 Solanum cardiophyllum Lindl. heartleaf horsenettle CA (AW) L48 (I)
SOCA3 Solanum carolinense L. Carolina horsenettle AK (NW), AZ (PNW), AR (NW), CA (BW), HI (NW), IA (PRNW), NV (NW) L48 (N), CAN (I)
SODI Solanum dimidiatum Raf. western horsenettle CA (AW) L48 (N)
SODU Solanum dulcamara L. climbing nightshade CT (PIB) L48 (I), CAN (I)
SOEL Solanum elaeagnifolium Cav. silverleaf nightshade AR (NW), CA (BW), HI (NW), ID (NW), NV (NW), OR (ADW, Q), WA (CAW, NWSPQ) L48 (N), HI (I), PR (N)
SOLA Solanum lanceolatum Cav. orangeberry nightshade CA (BW) L48 (I)
SOMA Solanum marginatum L. f. purple African nightshade CA (BW) L48 (I)
SOPT7 Solanum ptycanthum Dunal West Indian nightshade KY (NW) L48 (N), AK (I), HI (I), VI (I), CAN (N)
SORO3 Solanum robustum Wendl. shrubby nightshade HI (NW) HI (I)
SORO Solanum rostratum Dunal buffalobur nightshade ID (NW), OR (BDW, Q), WA (CAW, NWSPQ) L48 (N), CAN (W)
SOTA3 Solanum tampicense Dunal scrambling nightshade AL (CAW), CA (Q), FL (NW), MA (P), NC (CAW), OR (Q), SC (ILAP, PP), VT (CAW) L48 (I)
SOTO4 Solanum torvum Sw. turkey berry AL (CAW), CA (Q), FL (NW), HI (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) (I), L48 (I), HI (I), PR (I), VI (I)
SOVI2 Solanum viarum Dunal tropical soda apple AL (CAW), AZ (PNW), CA (Q), FL (NW), MA (P), MN (PNW), MS (NW), NC (CAW), OR (Q), SC (PP), TN (PP), TX (NP), VT (CAW) L48 (I)
SOSE2 Soliva sessilis Ruiz & Pav. field burrweed WA (CAW, NWSPQ) L48 (I), HI (I), CAN (I)
SOAR2 Sonchus arvensis L. field sowthistle AK (NW), AZ (PNW), CA (AW), CO (CW), HI (NW), ID (NW), IL (NW), IA (PRNW), MI (NW), MN (PNW), NV (NW), SD (NW, RNPS), WY (NW) L48 (I), AK (I), CAN (I), SPM (I)
SOARA2 Sonchus arvensis L. ssp. arvensis field sowthistle WA (CBW) L48 (I), CAN (I), SPM (I)
SOAL Sorghum almum Parodi Columbus grass IL (NW), IN (NW), NV (NW), UT (NW) L48 (I)
SOBI2 Sorghum bicolor (L.) Moench30 sorghum IN (NW), IA (SNW), MD (NW), NV (NW), OH (PNW), PA (NW) (I), L48 (I), HI (I), PR (I), VI (I), CAN (I)
SOHA Sorghum halepense (L.) Pers. Johnsongrass AR (NW), CA (CW), CO (CW), DE (NW), ID (NW), IL (NW), IN (NW), KS (NW), KY (NW), MD (NW), MO (NW), NV (NW), OH (PNW), OR (BDW, Q), PA (NW), SD (RNPS), UT (NW), WA (CAW, NWSPQ), WV (NW) (I), L48 (I), HI (I), PR (I), CAN (I)
SOPR3 Sorghum propinquum (Kunth) Hitchc. sorghum NV (NW) (I)
SPER Sparganium erectum L. simplestem bur-reed AL (CAW), CA (Q), FL (PAP1), MA (P), NC (CAW), OR (Q), SC (ILAP, PP), VT (CAW) L48 (I)
SPAL Spartina alterniflora Loisel. smooth cordgrass OR (ADW, Q), WA (CBW, WAWQ) L48 (N), CAN (N)
SPAN5 Spartina anglica C.E. Hubbard common cordgrass OR (ADW, Q), WA (CBW, WAWQ) L48 (I), CAN (I)
SPDE2 Spartina densiflora Brongn. denseflower cordgrass OR (ADW, Q), WA (CAW, WAWQ) L48 (I), CAN (I)
SPPA Spartina patens (Aiton) Muhl. saltmeadow cordgrass OR (BDW, Q), WA (CAW, WAWQ) L48 (N), PR (N), VI (N), CAN (N)
SPJU2 Spartium junceum L. Spanish broom HI (NW), OR (BDW, Q), WA (CAW, NWSPQ) L48 (I), HI (I)
SPAL3 Spermacoce alata Aubl. [excluded] winged false buttonweed AL (CAW), CA (Q), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW)
BOAL4 Borreria alata (Aubl.) DC. FL (NW)
SPSA3 Sphaerophysa salsula (Pall.) DC. alkali swainsonpea CA (AW), NV (NW), OR (BDW, Q), WA (CBW) L48 (I), CAN (I)
STFL4 Stachys floridana Shuttlw. ex Benth. Florida hedgenettle NC (CBW) L48 (N)
STAL6 Stratiotes aloides L. [excluded] water soldiers AL (CCW), FL (PAP1)
STRIG Striga Lour. witchweed AL (CAW), AZ (PNW), AR (NW), CA (Q), HI (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) (N), L48 (I)
STAS2 Striga asiatica (L.) Kuntze Asiatic witchweed CA (AW) (N), L48 (I)
SYAS Symphytum asperum Lepechin prickly comfrey CA (BW) L48 (I), AK (I), CAN (I)
TACA8 Taeniatherum caput-medusae (L.) Nevski medusahead CA (CW), CO (AW), NV (NW), OR (BDW, Q), UT (NW) L48 (I)
TAMI3 Tagetes minuta L. muster John Henry CA (AW) L48 (I), HI (I), CAN (I)
TAMAR2 Tamarix L. tamarisk MT (CAT2), NM (CCW), SD (NW), TX (NP), WY (NW) (I), L48 (I)
TACH2 Tamarix chinensis Lour. five-stamen tamarisk CO (BW), ND (NW) L48 (I)
TAPA4 Tamarix parviflora DC. smallflower tamarisk CO (BW), NE (NW), NV (NW), ND (NW) L48 (I)
TARA Tamarix ramosissima Ledeb. saltcedar CO (BW), NE (NW), NV (NW), ND (NW), OR (BDW, Q), WA (CBW, NWSPQ) L48 (I)
TAVU Tanacetum vulgare L. common tansy CO (BW), MT (CAT1), WA (CCW), WY (NW) L48 (I), AK (I), HI (I), CAN (I), SPM (I)
THVI2 Themeda villosa (Poir.) A. Camus silky kangaroo grass HI (NW) HI (I)
THPA7 Thymelaea passerina (L.) Coss. & Germ. mezereon WA (CAW, NWSPQ) L48 (I), CAN (N)
TIBOU Tibouchina Aubl. glorytree HI (NW) (I)
TOAR Torilis arvensis (Huds.) Link spreading hedgeparsley WA (CBW, NWSPQ) L48 (I), CAN (N)
TOPU2 Toxicodendron pubescens Mill. Atlantic poison oak L48 (N)
RHTO8 Rhus toxicodendron L. MI (NW)
TORA2 Toxicodendron radicans (L.) Kuntze eastern poison ivy MN (PNW) L48 (N), CAN (N)
TOVE Toxicodendron vernix (L.) Kuntze poison sumac MI (NW) L48 (N), CAN (N)
TRAPA Trapa L. water chestnut FL (PAP1), NC (CAW) (I), L48 (I)
TRBI5 Trapa bicornis Osbeck horn nut WA (WAWQ)
TRNA Trapa natans L. water chestnut AL (CCW), AZ (PNW), CT (IB), ME (IAP), MA (P), OR (ADW, Q), SC (ILAP, PP), VT (CBW), WA (WAWQ) L48 (I), CAN (I)
TRSE6 Triadica sebifera (L.) Small Chinese tallow L48 (I)
SASE5 Sapium sebiferum (L.) Roxb. FL (NW), LA (NW), MS (NW), TX (NP)
TRTE Tribulus terrestris L. puncturevine AZ (PNW, RGNW), CA (CW), CO (CW), ID (NW), IA (SNW), NV (NW), NC (CBW), OR (BDW, Q), WA (CBW) (I), L48 (I), HI (I), CAN (W)
TRPR5 Tridax procumbens L. coatbuttons AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) (I), L48 (I), HI (I), PR (I), VI (I)
TRPE21 Tripleurospermum perforatum (Mérat) M. Lainz scentless false mayweed L48 (I), AK (I), CAN (I), GL (I)
MAPE2 Matricaria perforata Mérat CO (BW), WA (CCW)
TRRH Triumfetta rhomboidea Jacq. diamond burbark HI (NW) L48 (I), HI (I), PR (I), VI (I)
TRSE4 Triumfetta semitriloba Jacq. Sacramento burbark HI (NW) (I), L48 (N), HI (I), PR (N), VI (N)
TUFA Tussilago farfara L. coltsfoot AL (CAW), CT (IB), MA (P), OR (ADW, Q) L48 (I), CAN (I), SPM (I)
ULEU Ulex europaeus L. common gorse CA (BW), HI (NW), OR (BDW, Q), WA (CBW, NWSPQ) L48 (I), HI (I), CAN (I)
ULPU Ulmus pumila L. Siberian elm NM (CCW) L48 (I), CAN (I)
URLO Urena lobata L. Caesarweed HI (NW) (I,N), L48 (I), HI (I), PR (N), VI (N)
URPA Urochloa panicoides P. Beauv. panic liverseed grass AL (CAW), CA (Q), FL (NW), MA (P), MN (PNW), NC (CAW), OR (Q), SC (PP), VT (CAW) L48 (I)
UTIN Utricularia inflata Walter swollen bladderwort WA (WAWQ) L48 (N)
VAOF Valeriana officinalis L. garden valerian CT (PIB) L48 (I), CAN (I)
VEBL Verbascum blattaria L. moth mullein CO (BW) L48 (I), HI (I), CAN (I)
VETH Verbascum thapsus L. common mullein CO (CW), HI (NW) L48 (I), AK (I), HI (I), CAN (I)
VIAL2 Viscum album L. European mistletoe CA (BW) L48 (I)
VITIS Vitis L.31 grape OH (PNW) (I,N), L48 (I,N)
VOCU Vossia cuspidata Griff. hippo grass FL (PAP1)
XANTH2 Xanthium L. cocklebur AR (NW) (I,N), L48 (I,N)
XASP2 Xanthium spinosum L. spiny cocklebur OR (BDW, Q), WA (CCW) L48 (I), CAN (I)
XASTC Xanthium strumarium L. var. canadense (Mill.) Torr. & A. Gray Canada cocklebur (I), L48 (N), HI (I), CAN (N)
XACO Xanthium commune Britton IA (SNW)
ZYFA Zygophyllum fabago L. Syrian beancaper CA (AW), ID (NW), OR (ADW, Q), WA (CAW, NWSPQ) L48 (I)


†CodeNoxious Status
ADW "A" designated weed
AW A list (noxious weeds)
BDW "B" designated weed
BW B list (noxious weeds)
CAT1 Category 1 noxious weed
CAT2 Category 2 noxious weed
CAT3 Category 3 noxious weed
CAW Class A noxious weed
CBW Class B noxious weed
CCW Class C noxious weed
CW C list (noxious weeds)
IAP Invasive aquatic plant
IB Invasive, banned
ILAP Invasive aquatic plant
INB Invasive, not banned
NAW Noxious aquatic weed
NP Noxious plant
NUW Nuisance weed
NW Noxious weed
NWSPQ Noxious weed seed and plant quarantine
P Prohibited
PAP1 Prohibited aquatic plant, Class 1
PAP2 Prohibited aquatic plant, Class 2
PIB Potentially invasive, banned
PINB Potentially invasive, not banned
PIS Prohibited invasive Species
PN Public nuisance
PNW Prohibited noxious weed
PP Plant pest
PR Permit required
PRNW Primary noxious weed
Q Quarantine
QW Q list (temporary "A" list noxious weed, pending final determination)
RGNW Regulated noxious weeds
RNPS Regulated non-native plant species
RNW Restricted noxious weed
SNW Secondary noxious weed
SP Sale prohibited
WAWQ Wetland and aquatic weed quarantine

*CodeNative Status
I Introduced
I,N None
I,W None
N Native
N? Probably Native
W Waif
*CodeNative Status Jurisdiction
L48 Lower 48 States
AK Alaska
HI Hawaii
PR Puerto Rico
VI Virgin Islands
CAN Canada
GL Greenland
SPM St. Pierre and Miquelon
NA North America

1 IL; within the corporate limits of cities, villages, and incorporated towns  
2 MI; bushes subject to attack by black stem rust are prohibited  
3 OR; except named horticultural varieties  
4 US, AL, NC, OR, SC, VT; Mediterranean clone  
5 US, AL, CA, MN, NC, SC, VT; other than native or widely distributed species  
6 FL; Only the native Florida species are excluded from this list. These include: C. americana, C. compacta, C. exaltata, C. gronovii, C. indecora, C. obtusiflora, C. pentagona, C. umbellata  
7 UT; Bermudagrass shall not be a noxious weed in Washington County and shall not be subject to provisions of the Utah noxious Weed Act within the boundaries of the county  
8 WA; only cultivars 'Baltica', 'Pittsburgh', 'Star'  
9 WA; only cultivar 'Hibernica'  
10 WA; non-native Hieracium species except those listed as Class A or Class B  
11 OR; Imperata cylindrica 'Red Baron' is excluded from quarantine  
12 AZ; all species except Ipomoea carnea, Mexican bush morning glory, I. triloba, three-lobed morning glory, and I. arborescens, morning glory tree  
13 MI; any nonnative member of the genus Lythrum or hybrid of the genus is prohibited from sale  
14 NC; any Lythrum spp. not native to North Carolina  
15 WI; any nonnative member of the genus Lythrum or hybrids thereof  
16 IA; it is illegal to import, sell, offer for sale, or distribute the seeds or the plants of purple loosestrife in any form  
17 PA; including all cultivars  
18 TN; and related cultivars  
19 WA; any hybrid cross  
20 US, AL, CA, MN, NC, OR, SC, VT; other than native or widely distributed species  
21 FL; with the exception of O. uniflora  
22 WA; non-native genotypes  
23 IA; except R. frangula  
24 MI; planting of currants and gooseberries in certain parts of the State of Michigan is prohibited  
25 IA; not considered a noxious weed when used as a rootstock for cultivated roses  
26 MO; except when cultivated for or used as understock for cultivated roses  
27 FL; excluding S. minima  
28 NC; all except S. minima  
29 WA; in hay  
30 IA; not a noxious weed when cultivated  
31 OH; when growing in groups of 100 or more and not pruned, sprayed, cultivated, or otherwise maintained for two consecutive years  


Time Generated: 04/10/2021 10:36 PM CDT