Verbatim text: Cranfill, R. and D. M. Britton. 1983. Typification within the Polypodium virginianum complex (Polypodiaceae). Taxon 32: 557--560.
Author: Cranfill, R., Britton, D.M.
Year: 1983
Title: Typification within the Polypodium virginianum complex (Polypodiaceae)
Journal: Taxon
Volume: 32
Pages: 557–560