Asclepias purpurascens L.
Common Name: PURPLE MILKWEED
Coefficient of Conservatism: 9
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt P-Forb
Status: T
Asclepias purpurascens B. S. Walters

Dry savanna (especially oak) and thickets; shores, prairies.

A handsome species, with rich-colored flowers. The leaves tend to be more acute than in A. syriaca and usually somewhat less prominently pinnate-veined (the net-venation more evident). The leaves of A. syriaca are very prominently pinnate-veined and usually ± obtuse, but the two species are sometimes difficult to distinguish. An old collection from St. Clair Co. looks suspiciously like a hybrid with A. syriaca, and others from Jackson Co. also may show some influence of that species.

Locations

Barry County
Berrien County
Branch County
Cass County
Clinton County
Ingham County
Jackson County
Kalamazoo County
Kent County
Lenawee County
Livingston County
Macomb County
Midland County
Monroe County
Newaygo County
Oakland County
St. Clair County
St. Joseph County
Tuscola 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 13, 2017. http://www.michiganflora.net/species.aspx?id=159.