Cirsium pitcheri - Earth.com
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12-22-2016

Cirsium pitcheri

Cirsium pitcheri NatureServe Explorer Species Reports — NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports — Cirsium pitcheri ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library — The U.S. Fish and Wildlife Service’s National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.Pitcher’s thistle is a plant of modest appearance through much of its lifespan; it concentrates most of its biomass in a massive taproot that can be 6 feet (2 m) in length. Its long, narrow, gray-green leaves are protected by spines and dense, silvery hairs. Between 2 and 8 years after germination, the juvenile thistle abruptly matures and sends forth a flower stalk of 100 cm (40 inches) or more in height.

At the top of the blooming shoot is a spectacular effusive flower head, ranging in color from creamy white to very light pink, and guarded by spines. Some individuals may be quite bushy, and produce numerous flowering heads. Usually at least 5 years are required for the thistle to reach maturity. Pitcher’s thistle is monocarpic; after flowering once, the plant dies. Most of its seeds do not disperse very far, in fact, entire heads are occasionally buried, producing clusters of seedlings

Detailed information
Full Name: Pitcher's thistle (Cirsium pitcheri)
Where found: Wherever found
Critical Habitat:N/A
Species Group:Flowering Plants
Current listing status
Status Date Listed Lead Region Where Listed
Threatened 07/18/1988 Great Lakes-Big Rivers Region (Region 3) Wherever found
  • States/US Territories in which the Pitcher's thistle, Wherever found is known to or is believed to occur: Illinois , Indiana , Michigan , Wisconsin
  • US Counties in which the Pitcher's thistle, Wherever found is known to or is believed to occur: View All
  • USFWS Refuges in which the Pitcher's thistle, Wherever found is known to occur: Michigan Islands National Wildlife Refuge
  • Countries in which the the Pitcher's thistle, Wherever found is known to occur: Canada
Recovery
No critical habitat rules have been published for the Pitcher's thistle.
Date
Title
Plan Action Status
Plan Status
09/20/2002 Pitcher's Thistle (Cirsium pitcheri) Recovery Plan View Implementation Progress Final
Date
Title
Plan Action Status
Plan Status
09/20/2002 Pitcher's Thistle (Cirsium pitcheri) Recovery Plan View Implementation Progress Final
Date
Citation Page
Title
Document Type
07/08/2014 79 FR 38560 38562 Initiation of 5-Year Status Reviews of Nine Listed Animal and Two Listed Plant Species
  • Notice 5-year Review, Initiation
09/14/2010 75 FR 55820 55823 5-Year Status Reviews of Seven Midwest Species; Notice of initiation of reviews; request for information.
  • Notice 5-year Review, Initiation
03/30/2006 71 FR 16176 16177 5-Year Review of Five Midwestern Species
  • Notice 5-year Review, Initiation
10/11/2002 67 FR 63443 63444 Notice of Availability of the Approved Recovery Plan for the Pitcher's Thistle (Cirsium pitcheri)
  • Notice Final Recovery Plan Availability
Date
Title
02/05/2010 Pitcher’s thistle (Cirsium pitcheri) 5-Year Review
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