Verbatim text: Johnson, D. M. 1986b. Trophopods in North American species of Athyrium (Aspleniaceae). Syst. Bot. 11: 26--31.
Author: Johnson, D.M.
Year: 1986b
Title: Trophopods in North American species of Athyrium (Aspleniaceae)
Journal: Syst. Bot
Volume: 11
Pages: 26–31