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New rare and threatened species of Peponidium and Pyrostria (Rubiaceae, Vanguerieae) from the drylands of Madagascar
Swedish Museum of Natural History, Department of Botany.
Swedish Museum of Natural History, Department of Botany.
2024 (English)In: Candollea, ISSN 0373-2967, E-ISSN 2235-3658, Vol. 79, no 1, p. 53-62Article in journal (Refereed) Published
Abstract [en]

Four new species of the tribe Vanguerieae (Rubiaceae) from southern, southwestern and western Madagascar are described and illustrated. Two species belong to the genus Pyrostria Comm. ex Juss.: P. costata Klack. & Razafim. with small leaves and distinctly ribbed pollen presenters and fruits, and P. macrocarpa Klack. & Razafim. characterized by its large, obconical, 5 – 6-lobed fruits. The other two species belong to the Malagasy subendemic genus Peponidium Ar.nes: P. leroyi Klack. & Razafim., characterized by hairy leaves with ciliate margins, sparsely pubescent flowers and ribbed pollen presenters, and P. sessile Klack. & Razafim., distinct by its cordate almost sessile leaves and double-tipped corolla lobes. Risk of extinction assessments for all four species are presented, as well as the respective distribution maps.

Place, publisher, year, edition, pages
2024. Vol. 79, no 1, p. 53-62
National Category
Biological Sciences
Research subject
Diversity of life
Identifiers
URN: urn:nbn:se:nrm:diva-5586OAI: oai:DiVA.org:nrm-5586DiVA, id: diva2:1859865
Available from: 2024-05-22 Created: 2024-05-22 Last updated: 2024-05-28Bibliographically approved

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