Coefficient of Conservatism:
Coefficient of Wetness:
Native of Eurasia, collected by C. F. Wheeler along a railroad near Portland, Ionia Co., in 1890. The mature inner tepals are more deeply cordate than those of R. crispus, in this respect resembling those of R. longifolius.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 13, 2017. http://michiganflora.net/species.aspx?id=2310.