Verbatim text: Case, F. W. and G. L. Burrows. 1962. The genus Trillium in Michigan: Some problems of distribution and taxonomy. Pap. Michigan Acad. Sci. 47: 180–200.
Author: Case, F.W., Burrows, G.L.
Year: 1962
Title: The genus Trillium in Michigan: Some problems of distribution and taxonomy
Journal: Pap. Michigan Acad. Sci
Volume: 47
Pages: 180–200