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ODONTOSTELMA Rendle
TRACHYCALYMMA Bullock
Goyder, D.J. (2001) A revision of the tropical African genus Trachycalymma (K. Schum.) Bullock Kew Bulletin 56 129-161
Goyder, D.J. (2009) A synopsis of Asclepias (Apocynaceae: Asclepiadoideae) in tropical Africa Kew Bulletin 64 369 - 399
Shrubs or herbs, with milky latex. Leaves opposite or whorled; axils of leaves without bristles. Inflorescences erect, umbellate; flowers all opening ± simultaneously. Corolla with short tube, 5-lobed. Corona of 5 lobes, arising from near base of staminal column, flat with lateral margins folded forwards to form a cavity. Anthers 2-locular, appendaged. Follicles usually 1. Seeds with tuft of hairs. Derivation of name: named after Aesculapius, the ancient Greek god of medicine Worldwide: 100 species in North and Central America; some naturalised in the Old World Caprivi: 1 taxon. |
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