A global infrageneric classification system for the genus Crotalaria (Leguminosae) based on molecular and morphological evidence

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dc.contributor.authorle Roux, Marianne M.
dc.contributor.authorBoatwright, James S.
dc.contributor.authorvan Wyk, Ben-Erik
dc.date.accessioned2017-10-19T08:18:16Z
dc.date.available2017-10-19T08:18:16Z
dc.date.issued2013
dc.description.abstractCrotalaria is a large genus of 702 species with its centre of diversity in tropical Africa and Madagascar and secondary radiations in other parts of the world. The current infrageneric classification system is based on morphological and morphomet- ric studies of the African taxa only and is here re-evaluated using a phylogenetic approach. DNA sequences derived from the nuclear ITS and the plastid matK, psbA-trnH and rbcLa markers were analyzed using parsimony and model-based (Bayesian) approaches. The resultant molecular phylogeny allowed for a new interpretation of diagnostically important morphological characters, including specialisations of the calyx, keel, standard petal and style, which are variously convergent in several unrelated infrageneric groups. Of particular interest is the congruence between the new phylogeny and the distribution of stand- ard petal callosity types. A sectional classification system for the entire genus is proposed for the first time. The new system that is formalised here comprises eleven sections: Amphitrichae, Calycinae, Crotalaria, Geniculatae, Glaucae, Grandiflorae, Hedriocarpae, Incanae, Schizostigma, Borealigeniculatae and Stipulosae. Sectional limits of the Geniculatae, Calycinae and Crotalaria are modified. The subsections Stipulosae, Glaucae and Incanae are raised to sectional level, while some groups previously recognized as subsections are abandoned due to non-monophyly (subsections Chrysocalycinae, Hedriocarpae, Macrostachyae and Tetralobocalyx). Two new sections are recognized, Amphitrichae and Borealigeniculatae.en_US
dc.description.accreditationWeb of Science
dc.identifier.citationLe Roux, M. M. et al. (2013). A global infrageneric classification system for the genus Crotalaria (leguminosae) based on molecular and morphological evidence. Taxon, 65(2): 957 -971en_US
dc.identifier.issn0040-0262
dc.identifier.urihttp://dx.doi.org/10.12705/625.1
dc.identifier.urihttp://hdl.handle.net/10566/3240
dc.language.isoenen_US
dc.privacy.showsubmitterFALSE
dc.publisherBotanischer Garten und Botanisches Museumen_US
dc.rightsThis is the author-version of the article published online at: http://dx.doi.org/10.12705/625.1
dc.status.ispeerreviewedTRUE
dc.subjectAmphitrichae cladeen_US
dc.subjectBorealigeniculate cladeen_US
dc.subjectCallositiesen_US
dc.subjectFlower morphologyen_US
dc.subjectGenistoid cladeen_US
dc.titleA global infrageneric classification system for the genus Crotalaria (Leguminosae) based on molecular and morphological evidenceen_US
dc.typeArticleen_US

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Research Articles (Biodiversity and Conservation Biology)
Dr. James Stephen Boatwright