@article {101, title = {Taxonomy and phylogenetics of Cuviera (Rubiaceae{\textendash}Vanguerieae) and reinstatement of Globulostylis with the description of three new species}, journal = {Botanical Journal of Linnean Society}, volume = {173}, year = {2013}, pages = {407-441}, 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.

}, author = {Brecht Verstraete and Olivier Lachenaud and Erik Smets and S. Dessein and Bonaventure Sonk{\'e}} } @article {93, title = {Phylogenetics of tribe Sabiceeae (Ixoroideae, Rubiaceae) revisited, with a new subgeneric classification for Sabicea.}, journal = {Botanical Journal of Linnean Society}, volume = {182}, year = {2016}, pages = {551-580}, chapter = {551}, abstract = {

Tribe Sabiceeae (Ixoroideae, Rubiaceae) has undergone recent taxonomical changes with the incorporation of the
related genera Ecpoma, Pseudosabicea and Stipularia into the type genus Sabicea. We use phylogenetic analysis
and morphological data to verify the relationships among members of the tribe, including the most
comprehensive taxon sampling of the tribe to date with 74 of 145 species. Sequence data from the nuclear
internal transcribed spacer (ITS) and three plastid markers (petD, rps16, trnT\–F) were used to infer relationships
among the members of the tribe. Individual analyses using maximum likelihood, parsimony and Bayesian
approaches reveal several supported clades: the former genus Stipularia is resolved as a monophyletic unit, but
Ecpoma is monophyletic only if Sabicea urbaniana and Sabicea xanthotricha are included (corresponding to
Sabicea subgenus Stipulariopsis sensu Wernham). Pseudosabicea is biphyletic, with one clade corresponding to
section Anisophyllae of Halle (1964) and the other one to the other sections (Floribundae and Sphaericae) of the
genus. Eleven morphological characteristics were recorded for all species studied and seven have been mapped
onto the phylogenetic tree to study their evolution in the group and assess their value for the classification of
Sabicea s.l. Finally, our study shows that a combination of diagnostic characteristics should be used to
differentiate each group and we propose to recognise four subgenera in Sabicea.

}, doi = {10.1111/boj.12475.}, author = {Lise Zemagho and Sigrid Liede-Schumann and Bonaventure Sonk{\'e} and Steven Janssens and Olivier Lachenaud and Brecht Verstraete and Steven Dessein} }