Weed-ID-Links

Noxious Weed Identification (ID) Links:

Plants Database: http://plants.usda.gov/

Montana:
category 1: Category 1 noxious weeds are weeds that are currently established and generally widespread in many counties of the state. Management criteria includes awareness and education, containment and suppression of existing infestations and prevention of new infestations. These weeds are capable of rapid spread and render land unfit or greatly limit beneficial uses.

(a) Canada thistle (Cirsium arvense)
http://axp.ipm.ucdavis.edu/PMG/WEEDS/canada_thistle.html Univ. of CA, State Wide Integrated Pest Mgmt. Proj.
http://www.nps.gov/plants/alien/fact/ciar1.htm Native Plant Conservation Alliance
http://www.holoweb.com/cannon/canada.htm Rickert's Garden Page

http://plants.usda.gov/java/profile?symbol=CIAR4 USDA

http://ucce.ucdavis.edu/datastore/detailreport.cfm?usernumber=29&surveynumber=182 University of California

http://en.wikipedia.org/wiki/Canada_thistle Wikipedia

http://tncweeds.ucdavis.edu/esadocs/cirsarve.html GISI

http://www.holoweb.com/cannon/canada.htm Holoweb

http://www.nps.gov/plants/alien/fact/ciar1.htm PCA

http://www.missouriplants.com/Pinkalt/Cirsium_arvense_page.html Missouri Plants

http://caliban.mpiz-koeln.mpg.de/~stueber/thome/band4/tafel_139.html Kurt Stuber’s online library

http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=36335 ITIS

http://www.wildflowers-and-weeds.com/weedsinfo/Cirsium_arvense.htm Wild flowers and weeds

http://www.invasive.org/browse/subject.cfm?sub=2792 Invasive

(b) field bindweed (Convolvulus arvensis)
http://tncweeds.ucdavis.edu/esadocs/convarve.html Weeds on the Web, TNC.
http://ucipm.ucdavis.edu/PMG/WEEDS/field_bindweed.html UC Pest Management Guidelines.

http://plants.usda.gov/java/profile?symbol=COAR4 USDA

http://tncweeds.ucdavis.edu/esadocs/convarve.html GISI

http://www.diagnose-me.com/treat/T371491.html Diagnose Me

http://davesgarden.com/pf/go/32093/index.html Dave’s Garden

http://www.cdfa.ca.gov/phpps/ipc/weedinfo/convolvulus.htm CDFA

http://www.nature.org/wherewework/northamerica/states/ohio/science/art7030.html The Nature Conservancy

http://ipm.ppws.vt.edu/scott/weed_id/cirar.htm Virginia Tech

http://en.wikibooks.org/wiki/A_Wikimanual_of_Gardening/Cirsium_arvense Wikibooks

http://ceris.purdue.edu/napis/pests/cth/index.html Pest tracker

(c) whitetop (Cardaria draba)
http://www.co.larimer.co.us/depts/pubwor/weeds/30weeds/hoarcres.htm Larimer Co., CO.
http://www.fs.fed.us/pnw/bmnri/weeds/weed_whitetop.html Blue Mountains Natural Resources Institute
http://www.colostate.edu/Depts/CoopExt/TRA/whtop.html CO. St. Univ. Coop. Ext. Tri R. Area.
http://www.ag.uiuc.edu/~vista/html_pubs/WEEDS/list.html Weeds of the N. Cent. U. S.

http://www.ibiblio.org/pfaf/cgi-bin/arr_html?Cardaria+draba - plants for a future

http://calphotos.berkeley.edu/cgi/img_query?where-genre=Plant&where-taxon=Cardaria+draba photopage

http://www.hortiplex.com/plants/p1/gw1007509.html- hortiplex

http://www.missouriplants.com/Whitealt/Cardaria_draba_page.html missouri plants

(d) leafy spurge (Euphorbia esula)
http://www.nps.gov/plants/alien/fact/eues1.htm The Alien Plant Working Group.

http://lupus.northern.edu:90/natsource/NOXIOU1/Leafys1.htm NSU An Educator's Guide to South Dakota's Natural Resources.
http://ceris.purdue.edu/napis/pests/ls/index.html NAPIS' page for PEST INFORMATION.
http://www.inhs.uiuc.edu/edu/VMG/lspurge.html Vegetation Management Guide.

http://en.wikipedia.org/wiki/Euphorbia wikipedia

http://en.wikipedia.org/wiki/Euphorbia_esula wikipedia

http://www.invasivespeciesinfo.gov/plants/leafyspurge.shtml USDA

http://www.issg.org/database/species/ecology.asp?si=83&fr=1&sts= GISSD

http://www.cdfa.ca.gov/phpps/ipc/weedinfo/euphorbia.htm USDA

http://www.lucidcentral.org/keys/FNW/FNW%20seeds/html/fact%20sheets/Euphorbia%20esula.htm FNWD of the U.S.

(e) Russian knapweed (Centaurea repens)
http://www.colostate.edu/Depts/CoopExt/TRA/knapweed.html CO. St. Univ. Coop. Ext. Tri R. Area.
http://invader.dbs.umt.edu/ INVADERS Database System U. of MT.
http://www.ak.blm.gov/ak930/noxweeds.html BLM Alaska State Office.

http://www.invasivespeciesinfo.gov/plants/russknapweed.shtml USDA

http://plants.usda.gov/java/profile?symbol=ACRE3 USDA

http://en.wikipedia.org/wiki/Centaurea wikipedia

http://www.wildflowers-and-weeds.com/weedsinfo/Centaurea_repens.htm wildflowers & weeds

http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?103782 USDA

http://tncweeds.ucdavis.edu/esadocs/documnts/acrorep.pdf Element Stewardship

http://www.colostate.edu/Dept/DIS/organic/factsheets/RussianKnapweed.pdf colostate

http://www.usgs.nau.edu/swepic/factsheets/Acroptilon_repens.pdf USGS

(f) spotted knapweed (Centaurea maculosa)
http://www.oneplan.state.id.us/pest/nw30.htm   Source: Idaho's Noxious Weeds by R. H. Callihan & T. W. Miller
http://www.ppws.vt.edu/scott/weed_id/cenma.htm Virginia Tech. Weed ID Guide.
http://splash.metrokc.gov/wlr/lands/Weeds/spotknap.htm    King Co. WA, DNR.
http://www.co.larimer.co.us/depts/pubwor/weeds/spot1knp.htm Larimer Co., CO.
http://ndsuext.nodak.edu/extpubs/plantsci/weeds/w842w.htm   NDSU Extension Service.
http://tncweeds.ucdavis.edu/esadocs/centmacu.html Weeds on the Web.

http://efg.cs.umb.edu/conne/jennjim/centaurea.html conNe

http://www.missouriplants.com/Pinkalt/Centaurea_maculosa_page.html missouri plants

http://www.invasivespeciesinfo.gov/plants/spotknapweed.shtml USDA

http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/wildflowers/centaurea_maculosa.html NC state university

(g) diffuse knapweed (Centaurea diffusa)
http://tncweeds.ucdavis.edu/esadocs/centdiff.html TNC Wildland Weeds Management & Research Program.
http://www.co.larimer.co.us/depts/pubwor/weeds/diffuse.htm Larimer Co., CO.
http://www.gov.mb.ca/agriculture/crops/weeds/fab38s00.html Manitoba Ag.

http://plants.usda.gov/java/profile?symbol=CEDI3 USDA

http://www.invasivespeciesinfo.gov/plants/diffknapweed.shtml USDA

http://www.issg.org/database/species/ecology.asp?si=313&fr=1&sts=sss GISD

http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=36958 ITIS

http://www.nwcb.wa.gov/weed_info/Written_findings/Centaurea_diffusa.html NWCB

http://www.cdfa.ca.gov/phpps/ipc/weedinfo/centaurea.htm USDA

http://en.wikipedia.org/wiki/Centaurea wikipedia

(h) Dalmatian toadflax (Linaria dalmatica)
http://tncweeds.ucdavis.edu/esadocs/linadalm.html TNC Wildland Weeds Management & Research Program.
http://splash.metrokc.gov/wlr/lands/Weeds/DalmToad.htm King Co., WA, DNR.
http://www.dowagro.com/theranch/toadflaxd.htm Dow AgroSciences- The Ranch.

http://www.invasivespeciesinfo.gov/plants/toadflax.shtml USDA

http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=503474 IT IS

http://plants.usda.gov/java/profile?symbol=LIDAD USDA

http://tncweeds.ucdavis.edu/esadocs/linadalm.html GISI

http://www.nysaes.cornell.edu/ent/biocontrol/weedfeeders/toadflax.html bio control

http://www.cdfa.ca.gov/phpps/ipc/weedinfo/linaria.htm USDA

http://hortiplex.gardenweb.com/plants/p1/gw1023466.html Garden web

(i) St. Johnswort (Hypericum perforatum)
http://www.altnature.com/gallery/st.htm Plant Savers

http://www.hypericum.com/hyp09.htm hypericum

http://plants.usda.gov/java/profile?symbol=HYPE USDA

http://www.herbmed.org/Herbs/Herb121.htm herb med

http://en.wikipedia.org/wiki/St_John's_wort wikipedia

http://home.caregroup.org/clinical/altmed/interactions/Herbs/Hypericum_perfo.htm homecare group

(j) sulfur (erect) cinquefoil (Potentilla recta)
http://www.ppws.vt.edu/scott/weed_id/ptlrc.htm Potentilla

http://www.missouriplants.com/Yellowalt/Potentilla_recta_page.html missouri plants

http://www.nwcb.wa.gov/weed_info/Written_findings/Potentilla_recta.html NWCB

http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/wildflowers/potentilla_recta.html wildflowers

http://www.mit.edu/people/cfox/flowers/common_names_index/06_potentilla-recta_Lg.jpg.97.html MIT

http://www.mobot.org/gardeninghelp/plantfinder/Plant.asp?code=L830 Kemper

(k) common tansy (Tanacetum vulgare L.)

(l) ox-eye daisy (Chrysanthemum leucanthemum L.)

(m) houndstongue (Cynoglossum officinale L.)

category 2: Category 2 noxious weeds have recently been introduced into the state or are rapidly spreading from their current infestation sites. These weeds are capable of rapid spread and invasion of lands, rendering lands unfit for beneficial uses. Management criteria includes awareness and education, monitoring and containment of known infestations and eradication where possible.

(a) dyers woad (Isatis tinctoria)
http://www.nf-2000.org/secure/Crops/S594.htm Crops for Industry and Energy in Europe.
http://www.fs.fed.us/pnw/bmnri/weeds/weed_dyerswoad.html Blue Mountains Natural Resources Institute.
http://www.fs.fed.us/pnw/bmnri/weeds/weed_dyerswoad.html Wanted

http://en.wikipedia.org/wiki/Woad Wikipedia

http://www.ibiblio.org/pfaf/cgi-bin/arr_html?Isatis+tinctoria plants for a future

http://plants.usda.gov/java/profile?symbol=ISTI USDA

http://www.findarticles.com/p/articles/mi_m0FDN/is_6_7/ai_96416604 look smart

http://www.pfaf.org/database/plants.php?Isatis+tinctoria plants for a future

http://www.ienica.net/crops/woad.htm woad indigo project

(b) purple loosestrife or lythrum (Lythrum salicaria, L. virgatum, and any hybrid crosses thereof)
http://www.npwrc.usgs.gov/resource/1999/loosstrf/field.htm N. Prairie Wildlife Research Center
http://www.nps.gov/plants/alien/fact/lysa1.htm Native Plant Conservation Alliance
http://omega.cc.umb.edu/~conne/jennjim/lythrum.html Conservation New England
http://www.ceris.purdue.edu/napis/pests/pls/index.html#facts Cooperative Agriculture Pest Survey

http://plants.usda.gov/java/profile?symbol=LYSA2 USDA

http://www.nps.gov/plants/alien/fact/lysa1.htm alien plant working group

http://tncweeds.ucdavis.edu/esadocs/lythsali.html GISI

http://www.ecy.wa.gov/programs/wq/plants/weeds/aqua009.html non-native fresh water plants

http://www.npwrc.usgs.gov/resource/plants/loosstrf/index.htm USGS

http://efg.cs.umb.edu/conne/jennjim/lythrum.html ConNe

(c) tansy ragwort (Senecio jacobea)
http://www.nps.gov/redw/tansy.htm Redwood Natioanal Park
http://splash.metrokc.gov/wlr/lands/Weeds/ragwort.htm King County, Washington
http://www.nps.gov/redw/tansy.htm Redwood State and National Parks
http://www.fs.fed.us/pnw/bmnri/weeds/weed_tansy.html Wanted

http://www.floracyberia.net/spermatophyta/angiospermae/dicotyledoneae/asteraceae/senecio_jacobea.html Flora

http://www.judywoods.dial.pipex.com/plants/ragwort.html Judy Woods

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=6136403&dopt=Abstract PUBMED

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=143983&dopt=Abstract PUBMED

http://equine-natural-health.co.uk/pm-ragwort.htm Equine Natural Health

http://forums.gardenweb.com/forums/load/natives/msg070810144050.html?1 GardenWeb

(d) meadow hawkweed complex (Hieracium pratense, H. floribundum, H. piloselloides)
http://www.oneplan.state.id.us/pest/nw14.htm Idaho's Noxiuos Weeds
http://www.fs.fed.us/ipnf/eco/yourforest/noxiousweeds/meadowhawkweed.html Idaho Panhandle
http://info.ag.uidaho.edu/AgKnowledge/agknowledge63.htm AgKnowledge

http://plants.usda.gov/java/profile?symbol=HICA10 USDA

http://www.msuturfweeds.net/details/_/yellow_hawkweed_25/ MSU TURF

http://www.wellesley.edu/Biology/Web/Species/pkingdevil.html species description

http://www.ct-botanical-society.org/galleries/hieraciumcaes.html Connecticut botanical society

http://www.oneplan.org/Crop/noxWeeds/nxWeed14.shtml idaho’s noxious weeds

http://www.suite101.com/reference/hieracium_pratense Suite 101

http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/wildflowers/hieracium_pratense.html NC State university

(e) orange hawkweed (hieracium aurantiacum)
http://www.oneplan.state.id.us/pest/nw18.htm Idaho's Noxious Weeds
http://splash.metrokc.gov/wlr/lands/Weeds/OrngHawk.htm King County Washington
http://w3.uwyo.edu/~caps/weeds/weed.html Wyoming Weeds

http://plants.usda.gov/java/profile?symbol=HIAU USDA

http://www.nwcb.wa.gov/weed_info/Hieracium_aurantiacum.html state noxious weed control board

http://www.uaf.edu/ces/cnipm/hieracium_aurantiacum.html alaska committee for noxious invasive weeds

http://www.ct-botanical-society.org/galleries/hieraciumaura.html conneticut botanical society

http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-lifeform=any&rel-taxon=equals&where-taxon=Hieracium+aurantiacum CalPhotos

http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=37697 IT IS

http://biology.burke.washington.edu/herbarium/imagecollection.php?Genus=Hieracium&Species=aurantiacum BURKE

(f) tall buttercup (Ranunculus acris L.)
http://www.csdl.tamu.edu/FLORA/imaxxran.htm Vascular Plant Image Gallery (scroll down to plant)
http://www.mta.ca/~rthompso/nativeflora/Thalamiflorae/Page1.html Wild Flowers of New York
http://www.ag.uiuc.edu/~vista/html_pubs/WEEDS/83.html Weeds of The North Central States

http://plants.usda.gov/java/profile?symbol=RAAC3 USDA

http://plants.usda.gov/java/profile?symbol=RAACA3 USDA

http://www.mygarden.net.au/name_detail/raact2/234/1 my garden

http://ace.acadiau.ca/~lusby/Morton%20Centre/digital_herbarium/descriptions_flowers/ranunculus_acris_l.htm Morton

http://linnaeus.nrm.se/flora/di/ranuncula/ranun/ranuacr.html Den virtuella floran

http://www.forestryimages.org/browse/genusimages.cfm?id=Ranunculus forestry images

http://wisplants.uwsp.edu/scripts/detail.asp?spcode=RANACR Herbarium

(g) tamarisk [saltceder] (Tamarix spp.)
http://tncweeds.ucdavis.edu/esadocs/tamaramo.html Weeds on the Web, TNC
http://ag.arizona.edu/classes/ram382/plntpix/tara.html Ag. Arizona

http://en.wikipedia.org/wiki/Tamarix wikipedia

http://www.earlham.edu/~biol/desert/invasive.htm invasive species in the southwest

http://plants.usda.gov/java/profile?symbol=TARA USDA

http://plants.usda.gov/java/profile?symbol=TAGA USDA

http://www.invasivespeciesinfo.gov/plants/saltcedar.shtml USDA

http://www.answers.com/topic/tamarix-1 answers

http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=22303 ITIS

http://www.fs.fed.us/database/feis/plants/tree/tamspp/introductory.html FEIS

category 3: Category 3 noxious weeds have not been detected in the state or may be found in only small, scattered, localized infestations. Management criteria includes awareness and education, early detection, and immediate action to eradicate infestations. These weeds are known pests in nearby states and are capable of rapid spread and render land unfit for beneficial uses.

(a) yellow starthistle (Centaurea solstitialis)
http://www.oneplan.state.id.us/pest/nw34.htm Idaho's Noxious Weeds
http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7402.html Univ. of California
http://www.batnet.com/rwc-seed/starthistle.html Dremann's Species

http://en.wikipedia.org/wiki/Centaurea_solstitialis wikipedia

http://plants.usda.gov/java/profile?symbol=CESO3 USDA

http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=36972 ITIS

http://www.invasivespeciesinfo.gov/plants/yellowstar.shtml USDA

http://www.fs.fed.us/database/feis/plants/forb/censol/all.html FEIS

http://ucce.ucdavis.edu/datastore/detailreport.cfm?usernumber=28&surveynumber=182 UCCE

http://en.wikipedia.org/wiki/Centaurea wikipedia

(b) common crupina (Crupina vulgaris)
http://www.oneplan.state.id.us/pest/nw04.htm Idaho's Noxious Weeds
http://www.wa.gov/agr/weedboard/weed_info/weed_photos/crupina.html Photographs
http://ceris.purdue.edu/napis/states/ca/news98/ca9804.txt Purdue

http://plants.usda.gov/java/profile?symbol=CRVU2 USDA

http://www.oneplan.org/Crop/noxWeeds/nxWeed04.shtml idaho’s noxious weeds

http://www.cdfa.ca.gov/phpps/ipc/weedinfo/crupina.htm CDFA

http://plants.usda.gov/java/profile?symbol=CRVUB USDA

http://www.lucidcentral.org/keys/FNW/FNW%20seeds/html/fact%20sheets/Crupina%20vulgaris.htm Federal Noxious Weeds

http://www.nwcb.wa.gov/weed_info/Written_findings/Crupina_vulgaris.html state noxious weed control board

http://www.utah-idahocwma.org/id_crupina.htm U& ICWMA

(c) rush skeletonweed (Chondrilla juncea)
http://www.oneplan.state.id.us/pest/nw24.htm Idaho's Noxious Weeds
http://www.fs.fed.us/pnw/bmnri/weeds/weed_skeleton.html Wanted
http://asuwlink.uwyo.edu/~caps/rushskeletonweed/rush.htm Biocontrol
http://dnr.metrokc.gov/wlr/LANDS/Weeds/RushSkel.htm King County, Washington

http://plants.usda.gov/java/profile?symbol=CHJU USDA

http://www.hortiplex.com/plants/p1/gw1009660.html hortiplex

http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-lifeform=any&rel-taxon=equals&where-taxon=Chondrilla+juncea CAL PHOTOS

http://image.fs.uidaho.edu/vide/descr213.htm plant viruses online

http://www.cdfa.ca.gov/phpps/ipc/weedinfo/chondrilla-juncea.htm CDFA

http://www.nwcb.wa.gov/weed_info/Chondrilla_juncea.html NWCB

by: Bryce Walston 3/9/2000. Updated by K.W. 2007.

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