Cirsium flodmanii

Cirsium flodmanii, commonly known as prairie thistle, Flodman's thistle, or (in French) chardon de Flodman, is a plant species native to Canada and the northern United States. It has been found in every Canadian province from Québec to Alberta, as well as from the northern Great Plains, northern Rocky Mountains, and western Great Lakes regions of the US, as well as northern parts of Vermont, New York, and Washington.^[3][4]

Flodman's thistle
Photograph
1913 illustration[1]
Conservation status
Secure  (NatureServe)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Cirsium
Species:	C. flodmanii
Binomial name
Cirsium flodmanii (Rydb.) Arthur
Synonyms[2]
Carduus flodmanii Rydb. Carduus oblanceolatus Rydb. Cirsium flodmanii f. oblanceolatum (Rydb.) D.Löve & J.-P.Bernard Cirsium nebraskense var. discissum Lunell Cirsium oblanceolatum (Rydb.) K.Schum.

Cirsium flodmanii is a perennial herb up to 140 cm (55 inches) tall. Leaves are up to 40 cm (16 inches) long, with numerous fine spines along the edges. Flowers are usually purple, occasionally white. The plant generally is found in grasslands and pastures.^[3][5][6]

Gallery

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  Habit
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  Stem
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  Inflorescence
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  Involucre (unopened)
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  Involucre (blooming)