Robert W. Freckmann Herbarium
University of Wisconsin - Stevens Point

Vascular Plants

Plants of Wisconsin

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  Cirsium discolor (Muhl. ex Willd.) Spreng. image
Photographer: Richard Bauer           

Derek Anderson
Derek Anderson
Merel R. Black
Christopher Noll
Christopher Noll

Christopher Noll
Robert Bierman
Robert W. Freckmann
Steve C. Garske
Steve C. Garske
Family Asteraceae
Cirsium discolor (Muhl. ex Willd.) Spreng.
field thistle, pasture thistle, prairie thistle
Cirsium: derived from the Greek kirsion, "a kind of thistle;" also cirsos meaning "a swollen vein" for which thistle was once a remedy
discolor: of two or different colors
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect, (biennial?)/perennial, 3'-7' tall, silvery, widely branched, spiny forb
Flower: head up to 1 1/2" wide with pale pink disk flowers; inflorescence of one to many heads on a somewhat leafy stalk; blooms July-Oct.
Fruit:dry seed on fluffy, feathery-divided pappus
Leaf:large, firm, spiny, deeply pinnately-divided, underside with a whitish fuzz
Habitat: dry to moderate moisture; prairies, fields
Notes: similar to C. altissimum
(Glossary)

More Information Natural Communities Herbarium Specimens
All Cirsium list Google- Images or Text

Flora of North America (off site)
Synonyms 
Carduus discolor (Muhl. ex Willd.) Nutt.
Cirsium discolor (Muhl. ex Willd.) Spreng. f. albiflorum (Britton) House

Vascular Plants

Plants of Wisconsin

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