Verbatim text: Tryon, R. M. 1960. A review of the genus Dennstaedtia in America. Contr. Gray Herb. 187: 23--52.
Author: Tryon, R.M.
Year: 1960
Title: A review of the genus Dennstaedtia in America
Journal: Contr. Gray Herb
Volume: 187
Pages: 23–52