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Invasive Plants of the Eastern United States: Identification and Control
Carduus acanthoides L. musk thistle Carduus nutans L. winged plumeless thistle Carduus tenuiflorus W. Curtis spotted knapweed Centaurea biebersteinii DC Canada thistle Cirsium arvense (L.) Scop. bull thistle Cirsium vulgare (Savi) Ten. tropical spiderwort Commelina benghalensis L. cypress spurge Euphorbia cyparissias L. leafy spurge Euphorbia esula L. goatsrue Galega officinalis L. orange daylily ...
invasive.org

Plant Invaders of Mid-Atlantic Natural Areas
(Microstegium vimineum) Lesser celandine (Ranunculus ficaria) Purple loosestrife (Lythrum salicaria) Additional Species Bamboos, exotic (Bambusa, Phyllostachys and Pseudosassa species) Canada thistle (Cirsium arvense) Chinese lespedeza (Lespedeza cuneata) Chinese silver grass (Miscanthus sinensis) Common daylily (Hemerocallis fulva) Common reed (Phragmites australis) Giant hogweed ( ...
www.invasive.org

Invasive Non-Native Plants
Recognize it by the odd odor, supposedly like raw beef, when you rub it. Control: (1); (2); (10) or (11). SPOTTED KNAPWEED (Centaurea maculosa), a biennial with thistle-like flowers. CANADA THISTLE, BULL THISTLE (Cirsium arvense, C. Vulgare). Exotic thistles are far more common than native ones. If you cannot identify the ...
www.mdflora.org

Habitats of the Great Lakes Region
Ludington, Michigan. Native dune species include the dune thistle (Cirsium pitcheri), Houghton's goldenrod (Solidago houghtonii) and the Lake Huron locust (Trimerotropis huroniana). Some of the last, best examples of the continent's most imperiled savanna communities ...
www.great-lakes.net

Endangered and Threatened Species of the Colorado Plateau States
Woundfin (Plagopterus argentissimus) * Plants--14 species E -- Sacramento prickly-poppy (Argemone pleiacantha ssp. pinnatisecta) E -- Mancos milk-vetch (Astragalus humillimus) T -- Sacramento Mountains thistle (Cirsium vinaceum) T -- Lee pincushion cactus (Coryphantha sneedii var. leei) E -- Sneed pincushion cactus (Coryphantha sneedii var. sneedii) * E -- Kuenzler hedgehog cactus (Echinocereus ...
www.cpluhna.nau.edu

Invasive Plants of Natural Habitats in Canada - Canadian Wildlife Service - Environment Canada
Accounts Principal Invasive Aliens Common buckthom (Rhamnus cathartica) Garlic mustard (Alliaria petiolata) Glossy buckthorn (Rhamnus frangula) Leafy spurge (Euphorbia esula) Moderate Invasive Aliens Canada thistle (Cirsium arvense) St. John's-wort (Hypericum perforatum) Smooth brome grass (Bromus inermis) Tatarian honeysuckle (Lonicera tatarica) Yellow and white sweet-clover (Melilotus spp.) ...
www.cws-scf.ec.gc.ca

EEK! - Vegetation Fascination - The Dune Thistle
EEK! - Vegetation Fascination - The Dune Thistle . Dune Thistle (Cirsium pitcheri) Wisconsin Status: Threatened Federal Status: Threatened You may be wondering, "How can a thistle be threatened, I thought they were just weeds? ... with blue-green leaves. In mid-summer, you'll see the flowers with the familiar thistle shape, but they will be cream colored to pinkish-tan. Lovin' the Sun, Sand and Shore ...
www.dnr.state.wi.us

Invasive Species: Plants - Canada Thistle (Cirsium arvense)
Reported Invasive: WeedUS Database map Management Plans: Plants Selected Internet Resources: Federal Government State Government University/Academic International Organizations Federal Government Canada Thistle (Cirsium arvense) USDA. APHIS. Cooperative Agricultural Pest Survey. National Agricultural Pest Information System. Photographs; Distribution; Special Note: Links to other sites Cirsium ...
invasivespeciesinfo.gov

National Geographic: Lewis & Clark—Plants—Leafy or Dwarf Thistle
ClarkPlantsLeafy or Dwarf Thistle SHOWING RECORD: 7 of 9Leafy or Dwarf Thistle Bob Marsh; Papilio/Corbis Leafy or Dwarf Thistle (Drummond's Thistle) Cirsium drummondii July 23, 1805, at Three Forks, Montana. A perennial herb of the aster family. Height: 5-6 cm. Moist meadows and woodlands. Dakotas south through Arizona and New Mexico. Subscribe Online Your subscriptions ...
nationalgeographic.com

Pitcher's Thistle ESA
Keddy, C. J. and P. A. Keddy. 1984,. Reproductive biology and habitat of Cirsium pitcheri. Mich. Bot. 23: 57-67. Loveless, M. D. 1983. Population biology and genetic organization ... Mosquin, T. 1990. A review of monitoring procedures and management guidlines for the Pitcher's thistle (Cirsium pitcheti) in Pukaskwa National Park. Report prepared for the Canadian Parks Service, Pukaskwa National ...
www.ncrs.fs.fed.us