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Issue: Vol. 721 No. 3: 8 Oct. 2025
Type: Article
Published: 2025-10-08
DOI: 10.11646/phytotaxa.721.3.8
Page range: 288-294
Abstract views: 217
PDF downloaded: 10

Gravesia gautieri (Melastomataceae: Sonerileae), a new species from northern Madagascar

California Academy of Sciences, Institute for Biodiversity Science and Sustainability, Department of Botany, 55 Music Concourse Drive, Golden Gate Park, San Francisco, California 94118-4503, USA
California Academy of Sciences, Institute for Biodiversity Science and Sustainability, Department of Botany, 55 Music Concourse Drive, Golden Gate Park, San Francisco, California 94118-4503, USA; São Paulo State University (UNESP), Department of Biology, School of Agricultural and Veterinary Sciences, Jaboticabal, São Paulo, 14884-900, Brazil
Andrafiamena-Andavakoera Madagascar new species paleotropics Sonerileae Eudicots

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.

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How to Cite

Almeda, F. & Pacifico, R. (2025) Gravesia gautieri (Melastomataceae: Sonerileae), a new species from northern Madagascar. Phytotaxa 721 (3): 288–294. https://doi.org/10.11646/phytotaxa.721.3.8