Dipsacus fullonum L.
Common Name: WILD TEASEL
Coefficient of Conservatism: *
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Ad P-Forb

Dipsacus fullonum B. S. Walters

The oldest Michigan collections seen are dated 1844 (presumably Macomb or Oakland Co.) and 1861 (“rare” in Washtenaw Co.). Apparently not spread much in the state until the second decade of the 20th century, and still very local in northern Michigan, while it is now common southward along roadsides and railroads, in fields and open disturbed ground, along trails and floodplain meadows.

The flowers are generally pale lilac, and the involuctral bracts are strictly linear. In D. laciniatus, the flowers are white, and the involucral bracts are wider and taper from the base to the apex. Branches of D. fullonum are slightly spreading, while those of D. laciniatus are essentially erect, allowing even old stalks in winter to be identified at a distance. 


Allegan County
Benzie County
Berrien County
Branch County
Charlevoix County
Cheboygan County
Clinton County
Eaton County
Hillsdale County
Houghton County
Ionia County
Isabella County
Kalamazoo County
Kent County
Lake County
Lenawee County
Macomb County
Mason County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ottawa County
Shiawassee County
St. Clair County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 7, 2022. https://michiganflora.net/species.aspx?id=1171.