Reference:Frye1917a
Verbatim text: Frye, T. C. 1917–1918. The rhacomitriums of western North America. Bryologist 20: 91–98;21: 1–16.
Author: Frye, T.C.
Year: 1917–1918
Title: The rhacomitriums of western North America
Journal: Bryologist
Volume: 20
Pages: 21–1