Abstract
Gravesia gautieri, a new species from northern Madagascar, is described, illustrated, mapped, and compared with presumed relatives based on morphological characters. It is readily diagnosed by its sparingly branched suffrutescent habit, 3-nerved leaf blades that are coarsely and remotely serrate at least distally with a sparse cover of minute brown granular hairs and ± appressed smooth hairs abaxially, long-pedunculate umbellate inflorescences, ± terete and ecostate hypanthia, obsolete calyx lobes with callose-thickened teeth borne on and barely exceeding the calyx tube in length, and dorso-basal subulate staminal appendages that are deflexed to variously coiled.
Andrafiamena-Andavakoera, Madagascar, new species, paleotropics, Sonerileae, Eudicots
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| Photos of living plants of Gravesia gautieri. A. Habit. B. Flower close-up. |
FRANK ALMEDA and RICARDO PACIFICO. 2025. Gravesia gautieri (Melastomataceae: Sonerileae), A New Species from northern Madagascar. Phytotaxa. 721(3); 288-294. DOI: doi.org/10.11646/phytotaxa.721.3.8 [2025-10-08]

