Description of the genus
Herbs or suffrutices. Leaves opposite. Inflorescence terminal but appearing lateral, 1-2-flowered. Flowers actinomorphic. Corolla salver-shaped; lobes overlapping to the left. Ovary of 2 carpels; disk composed of 2 glands. Fruit composed of 2 follicles (although one may abort); follicles cylindrical, acute. Seeds oblong, black; testa rugose.
Worldwide: 6 species: 5 in Madagascar, one in India and Sri Lanka
Other sources of information about Catharanthus:Flora of Zimbabwe
: cultivated Catharanthus pageFlora of Mozambique
(electronic Plant Information Center): CatharanthusFlora Zambesiaca
web site: CatharanthusGoogle
(Germplasm Resources Information Network) taxonomy for plants report for CatharanthusIPNI
(International Plant Names Index): CatharanthusKew Herbarium catalogue
Copyright: Mark Hyde, Bart Wursten and Petra Ballings, 2002-13
Hyde, M.A., Wursten, B.T. & Ballings, P.
. Flora of Zimbabwe: Genus page: Catharanthus.
http://www.zimbabweflora.co.zw/speciesdata/genus.php?genus_id=1111, retrieved 25 May 2013