@article {50, title = {Calycosiphonia pentamera sp nov (afrotropical Rubiaceae) from the {\textquoteright}Lower Guinea{\textquoteright} area}, journal = {Nordic Journal of Botany}, volume = {25}, number = {5-6}, year = {2007}, note = {Times Cited: 0}, pages = {275-280}, abstract = {

A distinctive new species of Calycosiphonia (Rubiaceae) is described and illustrated. It is endemic to the Lower Guinea Domain of the Guineo-Congolian Region, where it is restricted to south Cameroon and Monte Alen National Park (Equatorial Guinea). Its conservation status is assessed as Vulnerable according to the Red list criteria of IUCN. Calycosiphonia pentamera sp. nov. is the third species known from the genus. Molecular data have recently shown that the genera Calycosiphonia and Argocoffeopis form a single clade, but leave some open questions on how to distinguish and delimit the two genera. In the present state of knowledge, the novelty should be placed in Calycosiphonia based on morphological evidence: shrubs with large leaves becoming blackish in the dried state, inflorescences axillary and paired at the nodes, and fruits exceeding 15 mm in diameter. The 5-merous condition of the flowers and the presence of standard anthers (without transverse septa in the thecae) in C. pentamera are features not previously recorded from the genus. They require a better understanding in the framework of a more robust Molecular phylogeny, allowing character analysis of the Calycosiphonial/Argocoffeopsis clade.

}, isbn = {0107-055X}, author = {Sonk{\'e}, B. and Marie-Noel, D. K. and Robbrecht, E.} } @article {51, title = {An extraordinary new rheophyte in the genus Leptactina (Rubiaceae, Pavetteae) from Rio Muni (Equatorial Guinea)}, journal = {Botanical Journal of the Linnean Society}, volume = {153}, number = {2}, year = {2007}, note = {Times Cited: 0}, pages = {109-113}, abstract = {

A distinctive new species of Rubiaceae from Rio Muni, Equatorial Guinea, is described and illustrated. Leptactina rheophytica is the only rheophyte known in the genus. Its diagnostic characters are elucidated, its taxonomic affinities are discussed, and notes on its conservation status are provided. (c) 2007 The Linnean Society of London.

}, isbn = {0024-4074}, author = {Sonk{\'e}, B. and Neuba, D. and Kenfack, D. and De Block, P.} } @mastersthesis {58, title = {Diversit{\'e} et distribution des Rubiaceae end{\'e}miques du domaine bas-guin{\'e}en pr{\'e}sentes au Cameroun}, volume = {M{\'e}moire de Dipl{\^o}me d{\textquoteright}Etudes Approfondies (DEA) en sciences}, year = {2007}, pages = {125}, school = {University of Yaound{\'e} I}, type = {MSc thesis}, address = {Cameroon}, author = {Taedoumg, E.} } @conference {15, title = {Contribution des Orchidaceae et des Rubiaceae end{\'e}miques d{\textquoteright}Afrique centrale atlantique {\`a} l{\textquoteright}{\'e}tude phytog{\'e}ographique du Cameroun}, booktitle = {XVIII{\`e}me congr{\`e}s de l{\textquoteright}AETFAT}, year = {2007}, note = {Talk}, month = {26 February {\textendash} 2 March 2007}, type = {Talk}, address = {Yaound{\'e}, Cameroon}, keywords = {Orchids Africa}, author = {Droissart, V. and Nguembou, C. and Sonk{\'e}, B. and Stevart, T.} } @conference {27, title = {Distribution des Rubiaceae end{\'e}miques du Cameroun}, booktitle = {Abstract du XVIII{\`e}me congr{\`e}s de l{\textquoteright}AETFAT}, year = {2007}, note = {Poster}, month = {26 February {\textendash} 2 March 2007}, type = {Talk}, address = {Yaound{\'e}, Cameroon}, author = {Nguembou, C. and Droissart, V. and Stevart, T. and Sonk{\'e}, B.} } @article {11, title = {A checklist of the Rubiaceae (coffee family) of Bioko and Annobon (Equatorial Guinea, Gulf of Guinea)}, journal = {Systematics and Biodiversity}, volume = {5}, number = {2}, year = {2007}, month = {Jun}, pages = {159-186}, chapter = {159}, abstract = {

A detailed checklist of the Rubiaceae (coffee family) occurring naturally on the islands of Bioko and Annobon (Equatorial Guinea, Gulf of Guinea) is presented, based on herbarium collections deposited in the herbaria of the Royal Botanic Gardens, Kew and The Natural History Museum, London. The checklist comprises 58 genera and 147 species, including six new generic records and 26 new infrageneric records. The total number of native Rubiaceae species occurring in Bioko is 139; three entities do not have formal names and probably represent new taxa. In Annobon there are 12 native genera and 13 indigenous species of Rubiaceae. The conservation status of two endemic species is assessed using IUCN criteria and it is proposed that they are considered Vulnerable.

}, isbn = {1477-2000}, author = {Davis, A. P. and Figueiredo, E.} }