Open AccessUn nouveau Psychotria (Rubiaceae) rhéophyte du sud Cameroun
Author(s) -
Olivier Lachenaud,
Olivier Séné
Publication year - 2012
Publication title -
plant ecology and evolution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.422
H-Index - 23
eISSN - 2032-3921
pISSN - 2032-3913
DOI - 10.5091/plecevo.2012.714
Subject(s) - psychotria , herbarium , rubiaceae , iucn red list , critically endangered , habit , botany , inflorescence , national park , geography , taxonomy (biology) , stipule , genus , conservation status , biology , endangered species , botanical garden , iucn protected area categories , ecology , habitat , psychology , psychotherapist
Background - A new species of Psychotria (Rubiaceae) from Cameroon is described and illustrated, in the framework of a regional revision of the genus. Methods - Normal practices of herbarium taxonomy have been applied. Key results - Psychotria torrenticola O.Lachenaud & Séné is remarkable in its rheophytic habit, narrowly lanceolate leaves, and in having very large flowers for the genus. It is closely related to P. psychotrioides (DC.) Roberty, from which, in addition to flower size, it also differs in having smooth pyrenes and fewerflowered inflorescences. The species is only known from the Ntem river valley near Nyabessan. Since the construction of a dam is scheduled in the region, the species is considered as Critically Endangered (CR B1a,b(iii)) according to IUCN criteria. © 2012 National Botanic Garden of Belgium and Royal Botanical Society of Belgium.SCOPUS: ar.jinfo:eu-repo/semantics/publishe