Taxonomic studies on Malagasy Dalbergia (Fabaceae). I. Two new species from northern Madagascar, and an emended description for D. manongarivensis

Abstract

Wilding, N., P.B. Phillipson, S. Crameri, S. Andriambololonera, R.L. Andriamiarisoa, S.A.F. Andrianarivelo, R. Bernard, N. Rakotonirina, C. Rakotovao, R.I. Randrianaivo, R. Razakamalala & P.P. Lowry II (2021). Taxonomic studies on Malagasy Dalbergia (Fabaceae). I. Two new species from northern Madagascar, and an emended description for D. manongarivensis. Candollea 76: 237-249. In English, English and French abstracts. Two new species of Dalbergia L. f. (Fabaceae: Dalbergieae) are described from northern Madagascar: Dalbergia antsirananae Phillipson, Crameri & N. Wilding and Dalbergia obcordata N. Wilding, Phillipson & Crameri, and an emended description is provided for a third species, Dalbergia manongarivensis Bosser & R. Rabev. All three species are illustrated with line drawings and photographs, and each is provided with a risk of extinction assessment using the IUCN Red List criteria: all three species are assessed as "Endangered". Dalbergia antsirananae and Dalbergia manongarivensis are closely related, and both appear to be a source of valuable wood, while Dalbergia obcordata is only known as a shrub and is assumed not to produce wood of commercial value. Received: March 9, 2021; Accepted: June 8, 2021; First published online: July 7, 2021