Three species of Madagascan Plectronia transferred to Peponidium (Vanguerieae, Rubiaceae) Author Davis, Aaron P. Royal Botanic Gardens, Kew, Richmond, Surrey, TW 9 3 AB, UK. E-mail: a. davis @ kew. org Bergius Foundation, Royal Swedish Academy of Sciences and Botany Department, Stockholm University, SE- 10691 Stockholm, Sweden. sylvain @ bergianska. se Author Razafimandimbison, Sylvain G. text Phytotaxa 2010 2010-10-28 10 46 48 journal article 6296 10.11646/phytotaxa.10.1.7 f3017ee3-4e05-4292-aa72-06e37432fb3e 1179-3163 4899802 Peponidium micranthum (Baker) A.P.Davis & Razafim. , comb. nov. Basionym :— Plectronia micrantha Baker (1887: 483) . Type : MADAGASCAR , Central Madagascar , 'received' November 1885 , Baron 3836 ( holotype , K!). Distribution :—Eastern Madagascar , in humid, evergreen forest, c. 950 m . Characteristics: —Stipules lanceolate-ligulate; leaves subcoriaceous, tertiary venation rather prominent, domatia large and obvious. Calyx lobes ciliate.