The morphology,taxonomy and evolution ofRhodocoma (Restionaceae) |
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Authors: | H. P. Linder J. H. Vlok |
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Affiliation: | (1) Bolus Herbarium, University of Cape Town, 7700 Rondebosch, Republic of South Africa;(2) Cape Provincial Department of Nature Conservation, P.O. Box 123, De Rust, Republic of South Africa |
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Abstract: | The vegetative and reproductive morphology, culm and rhizome anatomy and seed surface micromorphology ofRhodocoma are described. It is shown that this variation is best contained by recognizing three new species in the genus. These new taxa are described, and the phylogeny of the genus is investigated by cladistic analysis. The environmental parameters and distributions of the species are related to the cladogram. This suggests that the species are at present ecologically separated, and indicates that the speciation may have been sympatric. This is the first support for the hypothesis that sympatric speciation may have been important in the speciose Cape flora. |
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Keywords: | Angiosperms Restionaceae Rhodocoma Speciation phylogeny culm anatomy rhizome anatomy morphology taxonomy Flora of Africa |
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