01787nas a2200205 4500008004100000245008600041210006900127300000800196490000700204520109400211653001701305653001001322653003301332653001401365653001301379100002001392700002301412700002401435856012201459 2011 eng d00aColletoecema gabonensis, a third species of an unusual African genus of Rubiaceae0 aColletoecema gabonensis a third species of an unusual African ge a2190 v633 a

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 Ogooué-Lolo and Ngounié 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

10aColletoecema10aGabon10aIUCN conservation assessment10aRubiaceae10ataxonomy1 aDessein, Steven1 aLachenaud, Olivier1 aSonké, Bonaventure uhttps://rubiaceae-africa.myspecies.info/content/colletoecema-gabonensis-third-species-unusual-african-genus-rubiaceae