Catharanthus coriaceus is a species of flowering plant in the dogbane family, Apocynaceae. It is endemic to Madagascar.
C. coriaceus is typically found in the northern areas or the central plateau of Madagascar, preferring a dry, rocky environment. The plants are relatively small at full growth (hardly ever more than 30 cm tall). The one-flowered plant has leaves that are 30 mm long or less but are longer than the internodes. The follicles are erect or pedunculate, and the corolla is pink.
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