Humulus japonicus Siebold & Zucc.
Coefficient of Conservatism: *
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Ad A-Vine

Humulus japonicus stand A. A. Reznicek stand

A native of eastern Asia, sometimes cultivated as an ornamental annual vine and locally established in disturbed ground. First collected in 1914 in St. Clair Co., but not found since 1952.

Though not so yet in Michigan, this is an agressive spreader southward.  

The name Humulus scandens (Lour.) Merr. is used for this species in some floras and, if it actually applies to this plant, would be the older name.


Cass County
St. Clair County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 7, 2021.