@article {5746, title = {Verstreute Beobachtungen hinsichtlich der Familie Annonaceae}, journal = {Arkiv f{\"o}r Botanik}, volume = {3}, year = {1955}, chapter = {35}, author = {Fries, R.E.} } @article {5745, title = {Repertorium novarum specierum regni vegetabilis}, journal = {Repertorium novarum specierum regni vegetabilis}, volume = {13}, year = {1914}, chapter = {369}, author = {De Wildeman, E.} } @article {5742, title = {Tropical African plants I}, journal = {Kew Bulletin}, year = {1927}, chapter = {150}, author = {Hutchinson, J. and Dalziel, M.J.} } @article {5741, title = {Taxonomic revision of the African genera Brieya and Piptostigma (Annonaceae)}, journal = {Plant Ecology and Evolution}, volume = {150}, year = {2017}, 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, P. goslineanum and P. submontanum.

}, author = {Ghogue, J.-P. and Sonk{\'e}, B. and Couvreur, T.L.P.} } @article {5729, title = {Sirdavidia, an extraordinary new genus of Annonaceae from Gabon}, journal = {PhytoKeys}, volume = {46}, year = {2015}, month = {4/02/2015}, pages = {1{\textendash}19}, chapter = {1}, author = {Couvreur, T.L.P and Sonke, B and Niangadouma, R. and Sauquet, H.} } @article {586, title = {First records of flower biology and pollination in African Annonaceae: Isolona, Piptostigma, Uvariodendron, Monodora and Uvariopsis}, journal = {Flora - Morphology, Distribution, Functional Ecology of Plants}, volume = {206}, year = {2011}, pages = {498-510}, chapter = {498}, keywords = {Anthesis, Beetles, Cameroon, Flies, Floral adaptations, Flowering}, issn = {0367-2530}, doi = {10.1016/j.flora.2010.08.005}, author = {Gottsberger, Gerhard and Meinke, Svenja and Porembski, Stefan} } @article {56, title = {Molecular and morphological characterization of a new monotypic genus of Annonaceae, Mwasumbia, from Tanzania}, journal = {Systematic Botany}, volume = {34}, number = {2}, year = {2009}, pages = {266-276}, author = {Couvreur, T.L.P. and Van der Ham, R. W. J. M. and Mbele, Y.M. and Mbago, F. M. and Johnson, D. M.} } @article {57, title = {Chloroplast DNA polymorphism and phylogeography of a Central African tree species widespread in mature rainforests: Greenwayodendron suaveolens (Annonaceae)}, journal = {Tropical Plant Biology}, volume = {3}, number = {1}, year = {2010}, pages = {4-13}, publisher = {Springer New York}, abstract = {Geographic patterns of genetic variation at chloroplast markers have been successfully used to address the phylogeography and the demographic history of many plant species. Very few studies have however been conducted in important tropical centers of plant biodiversity like the African rainforests. The phylogeography of a tree species widespread in Central African mature forests, Greenwayodendron suaveolens subsp. suaveolens (Annonaceae), was investigated in the Lower Guinea phytogeographic domain (essentially Gabon and Cameroon) by sequencing an intergenic spacer of the chloroplast genome (trnC-petN1R). A total of 11 polymorphic sites, including nine single nucleotide polymorphisms (SNPs), two insertions/deletions and two inversions, defined 12 haplotypes. The taxon is represented by two sympatric varieties (var. suaveolens and var. gabonica) that carried distinct and relatively divergent haplotypes. These varieties, also well distinguishable morphologically, might therefore represent true biological species. The variety suaveolens, more common and more widespread than the variety gabonica, was represented by ten haplotypes. This taxon showed a weak but statistically significant phylogeographic structure, indicating that two sets of related haplotypes essentially occurred respectively in the northern and the southern hemispheres. These results suggest that the distribution of Greenwayodendron suaveolens subsp. suaveolens, which is currently continuous in the Lower Guinea domain, might have been more fragmented in the past, possibly in relation with Pleistocene forest fragmentation.}, keywords = {Biomedical and Life Sciences}, isbn = {1935-9756}, url = {http://dx.doi.org/10.1007/s12042-010-9041-6}, author = {Dauby, Gilles and Duminil, J{\'e}r{\^o}me and Heuertz, Myriam and Hardy, Olivier} }