Verbatim text: Tryon, A. F., R. M. Tryon, and F. Badré. 1980. Classification, spores, and nomenclature of the marsh fern. Rhodora 82: 461--474.
Author: Tryon, A.F., Tryon, R.M., Badré, F.
Year: 1980
Title: Classification, spores, and nomenclature of the marsh fern
Journal: Rhodora
Volume: 82
Pages: 461–474