Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

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  Cirsium flodmanii (Rydb.) Arthur image
Photographer: Emmet J. Judziewicz           

Derek Anderson

Emmet J. Judziewicz
Family Asteraceae
Cirsium flodmanii (Rydb.) Arthur
Flodman's 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
flodmanii: for J.H. Flodman
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Introduced - adventive
Plant: erect, perennial, 12"-32" tall forb spread by creeping roots which become taproots on the new plants; usually a single stem covered with dense, whitish fuzz
Flower: head 1" wide with a rounded base and purple disk flowers; inflorescence with one to a few clustered heads; blooms June-Sept.
Fruit:dry seed with a yellow band on fluffy, feathery-divided pappus
Leaf:usually deeply pinnately-divided with long triangular lobes, underside with whitish fuzz
Habitat: moist; poorly-drained areas mostly along railroads
Notes: similar to C. undulatum

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

Flora of North America (off site)
Carduus oblanceolatus Rydb.
Cirsium nebraskense (Britton) Lunell var. discissum Lunell
Cirsium oblanceolatum (Rydb.) K.Schum.

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