00443nas a2200121 4500008004100000245010500041210006900146300001200215490000700227100001800234700001700252856005200269 2010 eng d00aThree new species of Chassalia and Psychotria (Rubiaceae) from West and Central Africa0 aThree new species of iChassaliai and iPsychotriai Rubiaceae from a219-2330 v671 aLachenaud, O.1 aHarris, D.J. uhttps://rubiaceae-africa.myspecies.info/node/2200959nas a2200145 4500008004100000020001400041245009600055210006900151300001000220490000700230520048900237100001800726700001700744856005200761 2010 eng d a0107-055X00aThree new or little-known Chassalia (Rubiaceae) species from west and central Africa0 aThree new or littleknown iChassaliai Rubiaceae species from west a13-200 v283 a

A new species from Liberia and Cote d'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.

1 aLachenaud, O.1 aJongkind, C. uhttps://rubiaceae-africa.myspecies.info/node/2301059nas a2200145 4500008004100000020001400041245007400055210006500129300001200194490000800206520061400214100001800828700001500846856005200861 2010 eng d a2032-391300aA new species of Psychotria (Rubiaceae) from southern Cameroon0 anew species of iPsychotriai Rubiaceae from southern Cameroon a105-1080 v1433 a

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.

1 aLachenaud, O.1 aSéné, O. uhttps://rubiaceae-africa.myspecies.info/node/2401821nas a2200169 4500008004100000020001400041245009000055210006900145300001200214490000800226520130000234100001401534700001801548700001701566700001601583856005201599 2009 eng d a0778-403100aFour New Pauridiantha Species (Rubiaceae) Reflect the Richness of Gabon's Rainforests0 aFour New Pauridiantha Species Rubiaceae Reflect the Richness of  a177-1930 v1423 a

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.

1 aNtore, S.1 aLachenaud, O.1 aJanssens, S.1 aDessein, S. uhttps://rubiaceae-africa.myspecies.info/node/31