Type	Article
Authors(s)	Schneider H, Smith AR, Cranfill R, Hildebrand, T, Haufler, CH, Ranker, T.
Year	2004c.
Title	Unraveling the phylogeny of polygrammoid ferns (Polypodiaceae and Grammitidaceae): exploring aspects of the diversification of epiphytic plants.
Periodical	Molecular Phylogenetics and Evolution
Volume	31
Page(s)	1041–1063