Nouvelles espèces du genre Pyrostria (Rubiaceae, Vanguerieae) de Madagascar

• In the course of a taxonomic revision of the genus Pyrostria Comm. ex Juss. (Rubiaceae, Vanguerieae) in Madagascar, we describe five new species endemic from the Island: Pyrostria ambohitantelensis Atalahy, Rakotonas. & Razafim., Pyrostria ambrensis Atalahy, Rakotonas. & Razafim., Pyrostria betsomangensis Atalahy, Rakotonas. & Razafim., Pyrostria coriacea Atalahy, Rakotonas. & Razafim. and Pyrostria longicorollata Atalahy, Rakotonas. & Razafim. Each new species is provided with line drawings, a discussion on its morphological affinities and a risk of extinction assessment based on the IUCN Red List criteria.

Ämnesord

NATURVETENSKAP  -- Biologi -- Botanik (hsv//swe)

NATURAL SCIENCES  -- Biological Sciences -- Botany (hsv//eng)

NATURVETENSKAP  -- Biologi -- Biologisk systematik (hsv//swe)

NATURAL SCIENCES  -- Biological Sciences -- Biological Systematics (hsv//eng)

Nyckelord

Ixoroideae

Vanguerieae

Pyrostria

Madagascar

new species

taxonomy

Diversity of life

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