The paraphyly of Osmunda is confirmed by phylogenetic analyses of seven plastid loci
Abstract
To resolve phylogenetic relationships among all genera and subgenera in Osmundaceae,
we analyzed over 8,500 characters of DNA sequence data from seven plastid loci (atpA,
rbcL, rbcL-accD, rbcL-atpB, rps4-trnS, trnG-trnR, and trnL-trnF). Our results confirm
those from earlier anatomical and single-gene (rbcL) studies that suggested Osmunda
s.l. is paraphyletic. Osmunda cinnamomea is sister to the remainder of Osmundaceae
(Leptopteris, Todea, and Osmunda s.s.). We support the recognition of a monotypic
fourth genus, Osmundastrum, to reflect these results. We also resolve subgeneric relationships
within Osmunda s.s. and find that subg. Claytosmunda is strongly supported as sister
to the rest of Osmunda. A stable, well-supported classification for extant Osmundaceae
is proposed, along with a key to all genera and subgenera. © Copyright 2008 by the
American Society of Plant Taxonomists.
Type
Journal articleSubject
Science & TechnologyLife Sciences & Biomedicine
Plant Sciences
Evolutionary Biology
ferns
Osmunda
Osmundaceae
Osmundastrum
paraphyly
plastid DNA
NORTH-AMERICA
DNA
FERNS
BIOGEOGRAPHY
POPULATION
SEQUENCES
INFERENCE
EVOLUTION
MRBAYES
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https://hdl.handle.net/10161/21804Published Version (Please cite this version)
10.1600/036364408783887528Publication Info
Metzgar, JS; Skog, JE; Zimmer, EA; & Pryer, KM (2008). The paraphyly of Osmunda is confirmed by phylogenetic analyses of seven plastid loci.
Systematic Botany, 33(1). pp. 31-36. 10.1600/036364408783887528. Retrieved from https://hdl.handle.net/10161/21804.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.
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Kathleen M. Pryer
Professor of Biology

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