WAGENINGEN AGRICULTURAL UNIVERSITY PAPERS 97-2 (1997) Series of Revisions of Apocynaceae XLIV Craspidospermum Boj. ex A. DC, Gonioma E. Mey., Mascarenhasia A. DC, Petchia Livera, Plectaneia Thou., and Stephanostegia Baill. by A.J.M. Leeuwenberg Date of publication: 12Augus t 1997 Wageningen MM Agricultural University rn,,\;!(Ni;-. L.NV 1 iHiisaaAT N Series of Revisions of Apocynaceae XLIV / Craspidospermum Boj. ex A. DC, Gonioma E. Mey., Mascarenhasia A. DC, Petchia Livera, Plectaneia Thou., and Stephanostegia Baill. / A.J.M. Leeuwenberg ISBN 90-73348-76-5 NUGI 823 ISSN 0169-345X Distribution: Backhuys Publishers, P.O.Box 321,230 0 AH Leiden, The Netherlands. Telephone: +31-71-5170208 Fax: +31-71-5171856 E-mail:
[email protected] All rights reserved Printed in The Netherlands Series of Revisions of Apocynaceae XLIV Craspidospermum Boj. ex A. DC, Gonioma E. Mey., Mascarenhasia A. DC, Petchia Livera, Plectaneia Thou., and Stephanostegia Baill. byA.J.M . Leeuwenberg Department of PlantTaxonomy, Wageningen Agricultural University, P.O.Box 8010, 6700Wageningen, the Netherlands Abstract Six genera of Apocynaceae have been monographed. These six are restricted to Africa, except for Petchia, which also occurs in Sri Lanka with one endemic species. The study is based on herbarium material and living plants, mostly observed and collected by the author in Madagascar. Petchia replaces the well-known genus name of Cabucala as it has priority, so six new combinations have been made here. Petchia africana from Cameroun has been described as new to science. For Carissa verticillata a new name has been proposed to replace Pichon's homonym, C.pichoniana. In all, 23 names have been reduced to synonymy, 14 of which are even synonymso fPlectaneia thouarsii.