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A new phylogeny-based sectional classification for the large African orchid genus Disa


Bytebier, B; Bellstedt, D U; Linder, H P (2008). A new phylogeny-based sectional classification for the large African orchid genus Disa. Taxon, 57(4):1233-1251.

Abstract

Twenty-five years after the last major revision, the results of a molecular phylogenetic analysis have necessitated a re-classification of the Disinae (Orchidoideae, Orchidaceae). The small genus Schizodium, endemic to the Cape Floristic Region, is deeply embedded in the genus Disa and its generic status can thus no longer be maintained.
We propose a monogeneric subtribe Disinae and a subdivision of Disa into eighteen sections and one nothosection.
Excluding the latter, the sections are monophyletic, well-supported, morphologically distinguishable and are
delimited to maximize the congruence with the previous classification. All 180 described and one undescribed
species, as well as four named, natural hybrids are enumerated and assigned to sections and the nothosection.

Abstract

Twenty-five years after the last major revision, the results of a molecular phylogenetic analysis have necessitated a re-classification of the Disinae (Orchidoideae, Orchidaceae). The small genus Schizodium, endemic to the Cape Floristic Region, is deeply embedded in the genus Disa and its generic status can thus no longer be maintained.
We propose a monogeneric subtribe Disinae and a subdivision of Disa into eighteen sections and one nothosection.
Excluding the latter, the sections are monophyletic, well-supported, morphologically distinguishable and are
delimited to maximize the congruence with the previous classification. All 180 described and one undescribed
species, as well as four named, natural hybrids are enumerated and assigned to sections and the nothosection.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Systematic and Evolutionary Botany
Dewey Decimal Classification:580 Plants (Botany)
Language:English
Date:2008
Deposited On:27 Jan 2009 19:31
Last Modified:05 Apr 2016 12:54
Publisher:International Association for Plant Taxonomy
ISSN:0040-0262
Related URLs:http://www.ingentaconnect.com/content/iapt/tax (Publisher)

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