Descurainia pinnata (Walter) Britton
Common Name: TANSY MUSTARD
Coefficient of Conservatism: 0
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Nt A-Forb

Descurainia pinnata B. S. Walters

A native species, but usually found in disturbed ground; roadsides, railroads, fields, gravel pits, trails; also on disturbed shores and in open rocky (calcareous) forests. Collected as early as 1832 by Douglass Houghton (in Houghton County). The Michigan plants are var. brachycarpa (Richardson) Detling.

Locations

Alpena County
Berrien County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
    Only on Drummond Island
Delta County
Emmet County
Grand Traverse County
Houghton County
Ingham County
Kalamazoo County
Kent County
Leelanau County
Mackinac County
    Only on Bois Blanc, Mackinac, Round Islands
Washtenaw County
Wayne County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 13, 2017. http://www.michiganflora.net/species.aspx?id=637.