@article {72, title = {Colletoecema gabonensis, a third species of an unusual African genus of Rubiaceae}, journal = { Brittonia }, volume = {63}, year = {2011}, pages = {219}, chapter = {215}, abstract = {

As a result of ongoing studies of the Rubiaceae of Gabon, the new species
Colletoecema gabonensis is here described and illustrated. It is endemic to Gabon,
where it is the only species of the genus, and is so far only known from three collections
from the Ogoou\é-Lolo and Ngouni\é provinces. The new species is morphologically
intermediate between its two congeners, C. dewevrei (from Cameroon, Central
African Republic, Republic of the Congo, DR Congo, and Angola) and C. magna
(endemic to Cameroon). The new species agrees with C. dewevrei in having flowers
with exserted anthers and style, but differs in its sessile flowers and fruits. In the latter
characters, it resembles C. magna, from which it can be separated by its smaller fruits
and leaves, and by its different floral morphology. An IUCN conservation assessment
has been made and the species is provisionally assessed as Vulnerable, based on its
restricted area of occupancy and the small number of known locations

}, keywords = {Colletoecema, Gabon, IUCN conservation assessment, Rubiaceae, taxonomy}, author = {Dessein, Steven and Lachenaud, Olivier and Sonk{\'e}, Bonaventure} } @article {68, title = {Taxonomy and phylogenetics of Cuviera (Rubiaceae{\textendash}Vanguerieae) and reinstatement of Globulostylis with the description of three new species}, journal = {Botanical Journal of the Linnean Society}, volume = {173}, year = {2013}, month = {16 October 2013}, pages = {441}, chapter = {407}, abstract = {

Generic circumscriptions in tribe Vanguerieae (Rubiaceae) have been under discussion for a long time. Recent
molecular studies, while providing new insights, have not yet solved all the problems. In this study, the taxonomy
and phylogenetics of the genus Cuviera s.l. are investigated. On the basis of molecular and morphological evidence,
Cuviera is restricted to a group of ten West and Central African species. Globulostylis, previously included in
Cuviera, is reinstated as a distinct genus, with eight species from Central Africa. Both genera are revised; the
latter includes three new species (G. dewildeana, G. rammelooana and G. robbrechtiana) and two new combinations
(G. leniochlamys and G. uncinula). The close relationship of Cuviera s.s. and Globulostylis to Vangueriella is
shown. Six aberrant species (most from East Africa) are excluded from Cuviera, but further work is needed before
they can be confidently assigned to other genera.\ 

}, keywords = {Cameroon, Equatorial Guinea, Gabon, Tropical Africa}, author = {Verstraete, Brecht and Lachenaud, Olivier and Smeets, Erik and Dessein, Steven and Sonk{\'e}, Bonaventure} } @article {21, title = {New records for the flora of Cameroon, including a new species of Psychotria (Rubiaceae) and range extensions for some rare species}, journal = {Plant Ecology and Evolution}, volume = {146}, number = {1}, year = {2013}, note = {Times Cited: 0}, month = {2013}, pages = {121-133}, isbn = {2032-3913}, author = {Lachenaud, Olivier and Droissart, Vincent and Dessein, Steven and Stevart, Tariq and Simo, Murielle and Lemaire, Benny and Taedoumg, Hermann and Sonk{\'e}, Bonaventure} }