@article {71, title = {Three new or little-known Chassalia (Rubiaceae) species from west and central Africa}, journal = {Nordic Journal of Botany}, volume = { 28}, year = {2010}, pages = {20}, chapter = {13}, abstract = {

A new species from Liberia and Co\ˆte 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.

}, author = {Lachenaud, Olivier and Jongkind, Carel} } @article {70, title = {Psychotria elephantina sp. nov. (Rubiaceae) an endangered rainforest shrub from Cameroon}, journal = { Nordic Journal of Botany}, volume = {31}, year = {2013}, pages = {573}, chapter = {569}, abstract = {

Psychotria elephantina Lachenaud \& Cheek is described as a new species. It is placed in P. sect. Involucratae (Petit) Verdc.,
endemic to the South West Region of Cameroon and is assessed as \‘ Endangered \’ (EN) using the IUCN criteria. Th e species
is distinctive in P. sect. Involucratae due to its long petioles (6.5 \– 12.0 cm), involucres of two pairs of large free bracts and
green corollas with included stamens in both longistylous and brevistylous fl owers.

}, author = {Cheek, Martin and Lachenaud, Olivier} }