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Coefficient of Conservatism:
4
Coefficient of Wetness:
0
Wetness Index:
FAC
Physiognomy:
Nt P-Vine
B. S. Walters
male flowers
An herbaceous vine in rich dense or dry open forests, fencerows, and thickets; often along pond and marsh borders, river bottoms, and railroads.
Al-Shehbaz & Schubert (1989) consider D. villosa to be a primarily Coastal Plain species with strongly ridged stems and leaves all alternate, while recognizing our plant as D. quaternata J. F. Gmel., with essentially terete stems and the lowest leaves on the stem whorled. Many, however, regard this variation as part of a broadly defined D. villosa. Herbarium collections often do not have the lower portions of the stem, but our plants in the field may have the lowermost leaves alternate or whorled in the same population, and the stems seem slightly ridged. Hopefully further work will clarify this situation.
Locations
Allegan County
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Barry County
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Berrien County
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Branch County
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Calhoun County
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Cass County
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Clare County
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Clinton County
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Eaton County
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Genesee County
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Gratiot County
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Hillsdale County
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Ingham County
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Ionia County
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Jackson County
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Kalamazoo County
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Kent County
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Lake County
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Lapeer County
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Lenawee County
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Livingston County
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Manistee County
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Mason County
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Mecosta County
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Menominee County
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Midland County
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Monroe County
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Muskegon County
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Newaygo County
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Oakland County
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Ottawa County
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Saginaw County
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Shiawassee County
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St. Clair County
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St. Joseph County
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Tuscola County
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Van Buren County
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Washtenaw County
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Wayne County
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Citation:
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 30, 2023. https://michiganflora.net/species.aspx?id=1170.