Fallopia scandens (L.) Holub
Synonym: Polygonum scandens
Coefficient of Conservatism: 2
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Nt P-Vine

Fallopia scandens A. A. Reznicek

Polygonum scandens of Michigan Flora.

Disturbed ground (roadsides, dumps, railroads, etc.) and also shores, forests, thickets, and wetlands. Our plants are probably all or mostly native, but are variable in size of fruit and shape of wing on the outer tepals. Because of the extension of the tepal wings down the pedicel, the joint (which is always below the wings) generally appears to be on the lower half of the pedicel in this species; in F. convolvulus and F. cilinodis it is on the upper half, near the perianth. No specimens appear to be unambiguously F. dumetorum (L.) Holub, a native of Europe with fruiting perianth orbicular in outline and the wings not extending down the pedicels.

Fallopia baldschuanica (Regel) Holub (Polygonum aubertii of Michigan Flora), a native of Asia, would key here, but differs from F. scandens in its woody habit and long, many-flowered inflorescences; it has been recently collected by R. W. Smith in Adrian, Lenawee Co., but perhaps only persisting from a planting. It should be watched to see if it spreads.


Allegan County
Barry County
Bay County
Berrien County
Calhoun County
Cass County
Charlevoix County
Eaton County
Genesee County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Huron County
Ingham County
Ionia County
Isabella County
Jackson County
Kalamazoo County
Kent County
Lake County
Lapeer County
Leelanau County
Lenawee County
Manistee County
Mason County
Mecosta County
Midland County
Monroe County
Muskegon County
Oakland County
Oceana County
Ogemaw County
Saginaw County
St. Clair County
St. Joseph County
Tuscola County
Van Buren County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. June 29, 2022. https://michiganflora.net/species.aspx?id=2278.