Fallopia sachalinensis (F. Schmidt) Ronse Decr.
Common Name: GIANT KNOTWEED
Synonym: Polygonum sachalinense
Coefficient of Conservatism: *
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Ad P-Forb

Polygonum sachalinense of Michigan Flora.

A native of eastern Asia, rarely escaped from cultivation to such sites as railroads, roadsides, and old homesites. First collected in 1958 in Houghton and Jackson Cos.

Locations

Baraga County
Benzie County
Charlevoix County
Cheboygan County
Emmet County
Houghton County
Jackson County
Washtenaw County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 18, 2017. http://michiganflora.net/species.aspx?id=2277.