A reassessment of Hemizygia and Syncolostemon (Ocimeae—Lamiaceae)
Abstract:The relationships between Hemizygia and Syncolostemon are investigated. Parsimony analyses of morphological data and sequences of the trnL intron, trnL-trnF intergenic spacer and the rps16 intron were carried out separately and in combination. All analyses largely show strong support for the two genera as a monophyletic group; neither genus as currently circumscribed is monophyletic. They are herein merged under the earliest name Syncolostemon. The clade can be diagnosed by the presence of fused anterior stamens. Bremer's ancestral area analysis method suggests that the Afroalpine and Afromontane archipelago-like Regional Centre of Endemism may be the ancestral area for Syncolostemon s.l.
Document Type: Research Article
Affiliations: 1: School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, P/Bag 3, WITS 2050, Johannesburg, South Africa; Department of Botany, Moi University, P.O. Box 3900, Eldoret, Kenya 2: School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, P/Bag 3, WITS 2050, Johannesburg, South Africa 3: Herbarium, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, U.K. 4: Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, U.K.
Publication date: November 1, 2006
Impact Factor (2014): 3.3
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