@article {46, title = {A new species of Colletoecema (Rubiaceae) from southern Cameroon with a discussion of relationships among basal Rubioideae}, journal = {Blumea}, volume = {53}, number = {3}, year = {2008}, note = {Times Cited: 0}, pages = {533-547}, abstract = {

Colletoecema magna, a new species from the Ngovayang Massif (southern Cameroon) is described and illustrated. A comparative morphological study illustrates the similar placentation and fruit anatomy of the novelty and Colletoecema dewevrei, the only other species of the genus. Colletoecema magna essentially differs from C. dewevrei by its sessile flowers and fruits, the corolla tube that is densely hairy above the insertion point of the stamens and the anthers that are included. Further characters that separate the novelty are its larger leaves, more condensed inflorescences, and larger fruits. Its position within Colletoecema is corroborated by atpB-rbcL and rbcL chloroplast sequences. The relationships among the basal lineages of the subfamily Rubioideae, to which Colletoecema belongs, are briefly addressed. Based on Our present knowledge, a paleotropical or tropical African origin of the Rubioideae is hypothesized.

}, isbn = {0006-5196}, author = {Sonk{\'e}, B. and Dessein, S. and Taedoumg, H. and Groeninckx, I. and Robbrecht, E.} } @article {54, title = {Synopsis of the genus Mitriostigma (Rubiaceae) with a new monocaulous species from Southern Cameroon}, journal = {Nordic Journal of Botany}, volume = {27}, number = {4}, year = {2009}, pages = {305-312}, chapter = {305}, author = {Sonk{\'e}, B. and Simo, M. and Dessein, S.} } @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.} }