期刊
PHYTOKEYS
卷 35, 期 -, 页码 23-43出版社
PENSOFT PUBL
DOI: 10.3897/phytokeys.35.6886
关键词
Brazil; phylogeny; pteridophytes; Taenitidoideae; taxonomy
资金
- National Science Foundation (NSF) [DEB-0717398, DEB-0717430, DEB-1145614, DEB-1145925]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [301157/2010-3]
- Cahill Award from the University of North Carolina Wilmington
- Direct For Biological Sciences
- Division Of Environmental Biology [1405181] Funding Source: National Science Foundation
The Neotropical fern genera Eriosorus and Jamesonia have long been thought of as close relatives. Molecular phylogenetic studies have confirmed this notion but have also revealed that neither genus is monophyletic with respect to the other. As a result, all known species of Eriosonts were recently subsumed under the older generic name Jamesonia. Here, through an analysis of a four-gene plastid dataset, we show that several species traditionally treated in Eriosorus are in fact more closely related to other taenitidoid fern genera (namely Austrogramme, Pterozonium, Syngramma, and 7itenitis) than they are to the large Jamesonia sensu lato clade. Tryonia Schuettp., J.Prado & A.T.Cochran gen. nov. is described to accommodate these species and four new combinations are provided. Tryonia is confined to southeastern Brazil and adjacent Uruguay; it is distinct (from most species Jamesonia) in having stramineous rachises.
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