Datura stramonium L.
Common Name: JIMSON-WEED
Coefficient of Conservatism: *
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Ad A-Forb

Probably native originally in the Western Hemisphere and early spread from eastern North America to Europe and elsewhere. Disturbed places including dumps, vacant lots, farmyards, roadsides, and disturbed mudflats and shores (especially recently exposed ones). First collected in 1860 in Washtenaw Co.

A tall annual plant, with very long-lived seeds and appearing quite dramatically when appropriate disturbance or exposure causes long-dormant seeds to grow. The flowers may be white or purple; the name D. tatula L. was applied to the latter form, but as the difference has been shown to result from a single gene it is hardly worthy of recognition, except as f. tatula (L.) B. Boivin.

Locations

Allegan County
Bay County
Berrien County
Cass County
Cheboygan County
Emmet County
Gratiot County
Hillsdale County
Houghton County
Ingham County
Jackson County
Kalamazoo County
Kent County
Lapeer County
Lenawee County
Livingston County
Manistee County
Mecosta County
Menominee County
Monroe County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ontonagon County
Ottawa County
St. Clair County
Van Buren County
Washtenaw County
Wayne County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 15, 2017. http://www.michiganflora.net/species.aspx?id=2695.