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Redefinition of Adiantopsis Fée (Pteridaceae): Systematics, diversification, and biogeography

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Abstract:

We present the first multi-gene phylogeny of taxa potentially allied to the fern genus Adiantopsis, one of about 20 genera in the large group of cheilanthoid ferns. Our goals were to clarify natural relationships, examine generic boundaries, and interpret character evolution within a phylogenetic framework. Phylogenetic analysis of combined plastid rbcL and atpA DNA sequences has led to an expansion of generic boundaries in Adiantopsis, a recircumscription that is clearly defensible with morphological data. Biogeographic analyses suggest an origin for the genus in South America, with a minimum of three migrations into the Caribbean. We include a synopsis of the genus and two new combinations.

Keywords: ATPA; CHEILANTHOIDS; FERNS; MOLECULAR PHYLOGENETICS; RBCL

Document Type: Research Article

Affiliations: 1: Department of Botany, Miami University, Oxford, Ohio 45056, U.S.A.; Department of Biology, Armstrong Atlantic State University, Savannah, Georgia 31419, U.S.A. 2: Department of Botany, Oklahoma State University, Stillwater, Oklahoma 74078, U.S.A. 3: Department of Botany, Miami University, Oxford, Ohio 45056, U.S.A.

Publication date: October 1, 2011

iapt/tax/2011/00000060/00000005/art00003
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