Verbatim text: Montgomery, J. D. 1982. Dryopteris in North America. Part II. The hybrids. Fiddlehead Forum 9: 23--30.
Author: Montgomery, J.D.
Year: 1982
Title: Dryopteris in North America. Part II. The hybrids
Journal: Fiddlehead Forum
Volume: 9
Pages: 23–30