Descourvieres P., Dubuisson J. Y., Droissart Vincent, Cribb P., Cawoy V., Simo-Droissart M., Sonke B., Stevart T. (2013). Rhipidoglossum montealenense (Orchidaceae), a new species from Equatorial Guinea and Cameroon. Plant Ecology and Evolution, 146 (3), p. 389-394. ISSN 2032-3913.
Titre du document
Rhipidoglossum montealenense (Orchidaceae), a new species from Equatorial Guinea and Cameroon
Année de publication
2013
Auteurs
Descourvieres P., Dubuisson J. Y., Droissart Vincent, Cribb P., Cawoy V., Simo-Droissart M., Sonke B., Stevart T.
Source
Plant Ecology and Evolution, 2013,
146 (3), p. 389-394 ISSN 2032-3913
Background and aims - While conducting a taxonomic revision of the genera Diaphananthe and Rhipidoglossum (Orchidaceae), a new taxon from Equatorial Guinea and Cameroon was discovered, and is formally described here. Methods - A comparison of about 800 specimens with the nomenclatural types and the specimens housed at BR, BRLU, K, P, WAG and YA herbaria was undertaken in order to confirm the taxonomical status of the new taxon. Its conservation status was assessed using the IUCN Red List Categories and Criteria. Key results - Rhipidoglossum montealenense Descourvieres, Stevart & P.J.Cribb sp. nov., here described and illustrated, is endemic to Rio Muni (Equatorial Guinea) and southern Cameroon. The species is found in the mountainous area situated along the transition from the coastal and to the continental regions of Atlantic Central Africa. It is close to R. melianthum but differs by its decurrent petals, a small ovary and a comparatively short spur. The species also differs from R. paucifolium by its elliptical lip lacking a callus and by rounded to subacute sepals and petals, and from R. rutilum by its short leaf internodes. The species is considered as Endangered according to IUCN Categories and Criteria. Its survival in situ will likely depend on the maintenance of the subpopulation in the Monte Alen National Park.
Plan de classement
Sciences du monde végétal [076]
Description Géographique
GUINEE EQUATORIALE ; CAMEROUN
Localisation
Fonds IRD [F B010061338]
Identifiant IRD
fdi:010061338
