@article {22, title = {Three new species of Chassalia and Psychotria (Rubiaceae) from West and Central Africa}, journal = {Edinburgh Journal of Botany}, volume = {67}, number = {2}, year = {2010}, pages = {219-233}, chapter = {219}, author = {Lachenaud, O. and Harris, D.J.} } @article {23, title = {Three new or little-known Chassalia (Rubiaceae) species from west and central Africa}, journal = {Nordic Journal of Botany}, volume = {28}, number = {1}, year = {2010}, pages = {13-20}, chapter = {13}, abstract = {

A new species from Liberia and Cote d\&$\#$39;Ivoire, Chassalia bicostata O. Lachenaud \& Jongkind, is described and compared with its two close relatives, C. pteropetala (K. Schum.) Cheek and C. pleuroneura (K. Schum.) O. Lachenaud, both from central Africa. The latter is here transferred to Chassalia from Psychotria. All three species share deeply bifid stipules, which are an unusual feature in Chassalia. Full descriptions and illustrations are given for the three taxa.

}, isbn = {0107-055X}, author = {Lachenaud, O. and Jongkind, C.} } @article {24, title = {A new species of Psychotria (Rubiaceae) from southern Cameroon}, journal = {Plant Ecology and Evolution}, volume = {143}, number = {1}, year = {2010}, pages = {105-108}, chapter = {105}, abstract = {

Background A novelty is described in the framework of an ongoing revision of Psychotrici in West and Central Africa. Methods Normal practises of herbarium taxonomy have been applied. Key results Psychotria sonkeana O.Lachenaud \& Sene, a new species endemic to southern Cameroon, is described and illustrated. Belonging to section Confertiflorae, it is related to P. subobliquct Hiern and P globiceps Hiern, but differs from both in having fistulose branches, puberulent peduncles and green-andwhite-striped immature fruits. The species is assessed to be Endangered according to the IUCN criteria.

}, isbn = {2032-3913}, author = {Lachenaud, O. and S{\'e}n{\'e}, O.} } @article {31, title = {Four New Pauridiantha Species (Rubiaceae) Reflect the Richness of Gabon{\textquoteright}s Rainforests}, journal = {Belgian Journal of Botany}, volume = {142}, number = {2}, year = {2009}, pages = {177-193}, abstract = {

Four new Pauridiantha species are described and illustrated. Pauridiantha longistipula Ntore \& Dessein is found in the northern part of the Crystal Mountains of Gabon and the neighboring region of Equatorial Guinea, and is easily characterized by its very long stipules. Pauridantha barbata Ntore \& Dessein, collected from the southern sector of the Moukalaba-Doudou National Park in Gabon and the Kouilou department in the Republic of the Congo, resembles P. mayumbensis, but differs inter alia in the absence of leaf domatia and barbate corolla buds. The two other new species are endemic to Gabon. Pauridiantha triflora Ntore \& Dessein, from the Doudou Mountains and the Chaillu Massif, is somewhat similar to P. smetsiana, but differs in the hairy stems, leaves and inflorescences, the smaller green-drying leaves and the narrowly triangular stipules. Pauridiantha uniflora Ntore \& Dessein, only known from the Crystal Mountains area, is easily confused with P. talbotii, but differs in the smaller, ovate leaves with short acumen, the less ascending secondary veins, and the mid-vein hairy above. Apart from the descriptions, a key to all Pauridiantha species from Gabon is provided and a conservation status of the new species following the IUCN criteria is given.

}, isbn = {0778-4031}, author = {Ntore, S. and Lachenaud, O. and Janssens, S. and Dessein, S.} }