Catharanthus lanceus Boj. ex A. D.C. leaves have yielded a new a-methyleneindoline alkaloid for which the name hörhammerinine is proposed. In addition, several other alkaloids were isolated, but their presence in this plant had been previously recorded, i.e. ajmalicine, leurosine, pericyclivine, yohimbine, perivine. © 1968, Walter de Gruyter. Alle Rechte vorbehalten.