Original Research

Revision of the genus Sphenostylis (Fabaceae: Phaseoleae) in South Africa and Swaziland

A. N. Moteetee, B. E. van Wyk
Bothalia | Vol 42, No 1 | a3 | DOI: https://doi.org/10.4102/abc.v42i1.3 | © 2012 A. N. Moteetee, B. E. van Wyk | This work is licensed under CC Attribution 4.0
Submitted: 09 December 2012 | Published: 12 December 2012

About the author(s)

A. N. Moteetee, Department of Botany and Plant Biotechnology, University of Johannesburg, South Africa
B. E. van Wyk, Department of Botany and Plant Biotechnology, University of Johannesburg, South Africa

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Abstract

A taxonomic revision of the genus Sphenostylis E.Mey. (tribe Phaseoleae) in southern Africa is presented. The genus is distinguishable by its characteristic wedge-shaped, dorsiventrally flattened style tip. Of the seven known species in the genus, only two, S. angustifolia and S. marginata, occur in South Africa and Swaziland; and the former is endemic to these countries. The two species differ in the size, shape, and venation of the leaflets; as well as the length of the petiole, peduncle, and pod. A key to the two species is provided and the correct nomenclature, typification, and known geographical distributions are given.

Keywords

Fabaceae; Leguminosae; Nesphostylis Verdc; Phaseoleae; Phaseolinae; Southern Africa; Sphenostylis E Mey; Vigna Savi

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