@article {91, title = {Taxonomic revision of the African genera Brieya and Piptostigma (Annonaceae). }, journal = {Plant Ecology and Evolution}, volume = {150}, year = {2017}, pages = {173-216}, chapter = {173}, abstract = {

Background and aims \– Annonaceae are an important family in tropical rain forests of Africa. Here, we
present a revision of the west-central African genus Piptostigma of the tribe Piptostigmateae. Previous
molecular phylogenetic analyses of Piptostigmateae have revealed that the genus as currently circumscribed
is paraphyletic. The aims of the article are: (1) to clarify the generic delimitation of the genus Piptostigma,
especially in relation to its current polyphyletic delimitation; (2) to provide a new updated key to the genera
of tribe Piptostigmateae; and (3) to provide for the first time in over 100 years a complete taxonomic
revision of genera Brieya and Piptostigma.
Material and methods \– Normal practices of herbarium taxonomy were used for the morphological study
of about 200 specimens from B, BR, BRLU, G, HBG, K, L, LBV, LISC, MO, P, U, US, WAG, YA and
Z. We sequenced three plastid regions for 32 samples representing 26 ingroup (Piptostigmateae) and six
outgroup species in order to explore the paraphyly of Piptostisma. The open source software QGis was
used to generate the distribution maps of the species and their conservation status was obtained using the
IUCN categories and criteria.
Key results \– Molecular and morphological evidence support the reinstatement of the genus Brieya De
Wild. Three keys are presented, one to the genera of Piptostigmateae and the two others to the species of
Brieya and Piptostigma. A total of thirteen species are described for Piptostigma and two for the genus
Brieya. Four new species are presented for the genus Piptostigma: P. macrophyllum, P. mayndongtsaeanum,

}, doi = {doi.org/10.5091/plecevo.2017.1137}, author = {J.-P. Ghogue and B. Sonk{\'e} and L.P. Couvreur Thomas} }