Divergence times and the evolution of epiphytism in filmy ferns (Hymenophyllaceae) revisited

Thumbnail Image



Journal Title

Journal ISSN

Volume Title

Repository Usage Stats


Citation Stats


Although the phylogeny of the filmy fern family (Hymenophyllaceae) is rapidly coming into focus, much remains to be uncovered concerning the evolutionary history of this clade. In this study, we use two data sets (108-taxon rbcL+ rps4, 204-taxon rbcL) and fossil constraints to examine the diversification of filmy ferns and the evolution of their ecology within a temporal context. Our penalized likelihood analyses (with both data sets) indicate that the initial divergences within the Hymenophyllaceae (resulting in extant lineages) and those within one of the two major clades (trichomanoids) occurred in the early to middle Mesozoic. There was a considerable delay in the crown group diversification of the other major clade (hymenophylloids), which began to diversify only in the Cretaceous. Maximum likelihood and Bayesian character state reconstructions across the broadly sampled single-gene (rbcL) phylogeny do not allow us to unequivocally infer the ancestral habit for the family or for its two major clades. However, adding a second gene (rps4) with a more restricted taxon sampling results in a hypothesis in which filmy ferns were ancestrally terrestrial, with epiphytism having evolved several times independently during the Cretaceous. © 2008 by The University of Chicago. All rights reserved.





Published Version (Please cite this version)


Publication Info

Hennequin, S, E Schuettpelz, KM Pryer, A Ebihara and J Dubuisson (2008). Divergence times and the evolution of epiphytism in filmy ferns (Hymenophyllaceae) revisited. International Journal of Plant Sciences, 169(9). pp. 1278–1287. 10.1086/591983 Retrieved from https://hdl.handle.net/10161/21808.

This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.



Kathleen M. Pryer

Professor of Biology

Unless otherwise indicated, scholarly articles published by Duke faculty members are made available here with a CC-BY-NC (Creative Commons Attribution Non-Commercial) license, as enabled by the Duke Open Access Policy. If you wish to use the materials in ways not already permitted under CC-BY-NC, please consult the copyright owner. Other materials are made available here through the author’s grant of a non-exclusive license to make their work openly accessible.