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A community-derived classification for extant lycophytes and ferns

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author The Pteridophyte Phylogeny Group,
Project Evolution of moonwort ferns (Botrychium, Ophioglossaceae) on local to global scales
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Original article (peer-reviewed)

Journal Journal of Systematics and Evolution
Volume (Issue) 54(6)
Page(s) 563 - 603
Title of proceedings Journal of Systematics and Evolution
DOI 10.1111/jse.12229


Phylogeny has long informed pteridophyte classification. As our ability to infer evolutionary trees has improved, classifications aimed at recognizing natural groups have become increasingly predictive and stable. Here, we provide a modern, comprehensive classification for lycophytes and ferns, down to the genus level, utilizing a community-based approach. We use monophyly as the primary criterion for the recognition of taxa, but also aim to preserve existing taxa and circumscriptions that are both widely accepted and consistent with our understanding of pteridophyte phylogeny. In total, this classification treats an estimated 11 916 species in 337 genera, 51 families, 14 orders, and two classes. This classification is not intended as the final word on lycophyte and fern taxonomy, but rather a summary statement of current hypotheses, derived from the best available data and shaped by those most familiar with the plants in question. We hope that it will serve as a resource for those wanting references to the recent literature on pteridophyte phylogeny and classification, a framework for guiding future investigations, and a stimulus to further discourse.