Simo-Droissart M. auteur aut IRD Sonké B. auteur aut IRD Droissart Vincent auteur aut IRD Geerinck D. auteur aut IRD Lowry P. P. auteur aut IRD Stévart T. auteur aut IRD text journalArticle eng text/pdf born digital access Despite a paucity of material available from continental Africa, previous morphological and molecular phylogenetic studies have suggested that Angraecum, the largest genus of the angraecoid orchids, is polyphyletic. A recent study based on broad sampling from the region confirmed the monophyly of section Dolabrifolia and a clear delimitation of four of its five members, one of which represents a new species. Based on these results, a comprehensive taxonomic revision of Angraecum sect. Dolabrifolia is presented here. It includes an identification key and a detailed description of each species, along with color photographs, distribution maps, information on habitat and phenology, and a preliminary risk of extinction assessment according to the IUCN Red List categories and criteria. Species richness in the section is highest in Atlantic Central Africa and around the Albertine Rift. The new species, A. biteaui, is described and illustrated with line drawings. It most closely resembles A. aporoides in general aspect but differs in both foliar and floral characters, and is only known from lowland forests in Gabon. specialized Angraecoid orchids distribution map identification key IUCN Red List categories and criteria West and Central Africa AFRIQUE DE L'OUEST AFRIQUE CENTRALE GABON 076 280 2 81-115 2016 1179-3155 https://www.documentation.ird.fr/hor/fdi:010068707 10.11646/phytotaxa.280.2.1 1179-3155 [F B010068707] https://www.documentation.ird.fr/hor/fdi:010068707 https://www.documentation.ird.fr/intranet/publi/2016/12/010068707.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2017-01-09 2017-08-23 fdi:010068707 fre