Coefficient of Conservatism:
Coefficient of Wetness:
B. S. Walters
An Asian shrub, occasionally cultivated for its late bloom and rarely escaped into fields. Collected by H. H. Bartlett in Washtenaw Co. in 1956. This collection has flowers smaller than usual (based on Akiyama, 1988) for the species, and may be a cultigen or hybrid.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 15, 2017. http://www.michiganflora.net/species.aspx?id=1323.