@article {hoekstra_nonet_2016, title = {A nonet of novel species of Monanthotaxis (Annonaceae) from around Africa}, journal = {PhytoKeys}, volume = {69}, year = {2016}, note = {00001}, pages = {71}, doi = {10.3897/phytokeys.69.9292}, url = {http://dx.doi.org/10.3897/phytokeys.69.9292}, author = {Hoekstra, P. H. and Wieringa, J. J. and Chatrou, L. W.} } @inbook {5424, title = {Phylogeny reconstruction and molecular dating in four Neotropical genera of Annonaceae: the effect of taxon sampling in age estimation}, booktitle = {Plant species-level systematics: new perspectives on pattern and process}, year = {2005}, pages = {149-174}, publisher = {Gantner Verlag}, organization = {Gantner Verlag}, address = {Ruggell}, author = {Pirie, M. D. and Chatrou, L. W. and Erkens, R. H. J. and Maas, J. W. and Van der Niet, T. and Mols, J. and Richardson, J. E.}, editor = {Bakker, F. T. and Chatrou, L. W. and Gravendeel, B. and Pelser, P.B.} } @article {5425, title = {{\textquoteright}Andean-centred{\textquoteright} genera in the short-branch clade of Annonaceae: testing biogeographical hypotheses using phylogeny reconstruction and molecular dating}, journal = {Journal of BiogeographyJournal of Biogeography}, volume = {33}, number = {1}, year = {2006}, month = {Jan}, pages = {31-46}, abstract = {Aim We test biogeographical hypotheses regarding the origin of Andean-centred plant groups by reconstructing phylogeny in the short-branch clade (SBC) of Annonaceae, and estimating the timing of diversifications in four apparently Andean-centred genera: Cremastosperma R.E.Fr., Klarobelia Chatrou, Malmea R.E.Fr. and Mosannona Chatrou. The SBC includes species distributed in both the Old and New World tropics. A number of the Neotropical genera display {\textquoteright}Andean-centred{\textquoteright} distribution patterns, with high species richness on both sides of the Andes mountain range. In particular, we test whether these groups could have originated on the South American continent during the time frame of the Andean orogeny [from c. 23 Ma (Miocene) to the present]. Methods Chloroplast DNA sequences were used to reconstruct phylogeny in related Annonaceae taxa plus outgroups, under maximum parsimony and Bayesian inference. The markers rbcL, trnL-trnF and psbA-trnH were sampled for 96 accessions to test the monophyly of each of the genera, and thus whether they might be para- or polyphyletic with respect to related groups distributed across Amazonia. To determine the sister groups of the four genera, the additional markers matK, ndhF, trnT-trnL, trnS-trnG and atpB-rbcL were sampled for 23 of the 96 accessions. Molecular dating techniques (nonparametric rate-smoothing; penalized likelihood; Bayesian inference) were then applied to estimate the age of the crown group of each genus and the age of their sister groups. Results Monophyly was confirmed in Cremastosperma, Malmea and Mosannona. The monotypic genus Pseudephedranthus Aristeg. was found to be nested within Klarobelia, the species of which otherwise formed a monophyletic group, and a South American-centred (SAC) clade was identified. The SAC clade comprises all the SBC genera distributed in South America and generally to a limited extent into Central America, but not those endemic to Africa, Asia and Central America. Age estimations for clades within the SBC were no older than around 60 Myr; those for the crown groups of Cremastosperma, Klarobelia, Malmea and Mosannona fell largely within the last 10-20 Myr. Main conclusions The distribution patterns of Cremastosperma, Klarobelia, Malmea and Mosannona are not the arbitrary result of the definition of para- or polyphyletic groups. We infer the presence of a common ancestor of the four genera in South America, but not by vicariance of an ancestral population on Gondwana. The age estimations, instead, may suggest that the SAC clade originated in South America by dispersal across the Boreotropics. Although the strength of this test was limited by imprecision in the molecular dating results, the ages of crown groups of the four genera suggest that diversifications occurred within the time frame of the orogeny of the Northern Andes.}, author = {Pirie, M. D. and Chatrou, L. W. and Mols, J. B. and Erkens, R. H. J. and Oosterhof, J.} } @article {5059, title = {Classification of a large and widespread genus of Neotropical trees, Guatteria (Annonaceae) and its three satellite genera Guatteriella, Guatteriopsis and Heteropetalum}, journal = {TaxonTaxon}, volume = {56}, number = {3}, year = {2007}, month = {Aug}, pages = {757-774}, isbn = {0040-0262}, author = {Erkens, R. H. J. and Chatrou, L. W. and Koek-Noorrnan, J. and Maas, J. W. and Maas, P. J. M.} } @article {5062, title = {Seven taxonomic discoveries in Annonaceae from southeastern Central America}, journal = {BlumeaBlumea}, volume = {51}, number = {2}, year = {2006}, note = {047, 080, 156}, pages = {199-220}, author = {Erkens, R.H.J. and Maas, P. J. M. and Chatrou, L. W. and Schatz, G. E. and Zamora, N} } @article {4982, title = {Little ecological divergence associated with speciation in two African rain forest tree genera}, journal = {BMC Evolutionary BiologyBMC Evolutionary Biology}, volume = {11}, number = {1}, year = {2011}, pages = {296}, abstract = {BACKGROUND:The tropical rain forests (TRF) of Africa are the second largest block of this biome after the Amazon and exhibit high levels of plant endemism and diversity. Two main hypotheses have been advanced to explain speciation processes that have led to this high level of biodiversity: allopatric speciation linked to geographic isolation and ecological speciation linked to ecological gradients. Both these hypotheses rely on ecology: in the former conservation of ecological niches through time is implied, while in the latter adaptation via selection to alternative ecological niches would be a prerequisite. Here, we investigate the role of ecology in explaining present day species diversity in African TRF using a species level phylogeny and ecological niche modeling of two predominantly restricted TRF tree genera, Isolona and Monodora (Annonaceae). Both these genera, with 20 and 14 species, respectively, are widely distributed in African TRFs, with a few species occurring in slightly less humid regions such as in East Africa. RESULTS:A total of 11 sister species pairs were identified most of them occurring in allopatry or with little geographical overlap. Our results provide a mixed answer on the role of ecology in speciation. Although no sister species have identical niches, just under half of the tests suggest that sister species do have more similar niches than expected by chance. PCA analyses also support little ecological differences between sister species. Most speciation events within both genera predate the Pleistocene, occurring during the Late Miocene and Pliocene periods.CONCLUSIONS:Ecology is almost always involved in speciation, however, it would seem to have had a little role in species generation within Isolona and Monodora at the scale analyzed here. This is consistent with the geographical speciation model for TRF diversification. These results contrast to other studies for non-TRF plant species where ecological speciation was found to be an important factor of diversification. The Pliocene period appears to be a vital time in the generation of African TRF diversity, whereas Pleistocene climatic fluctuations have had a smaller role on speciation than previously thought.}, isbn = {1471-2148}, author = {Couvreur, T.L.P and Porter-Morgan, Holly and Wieringa, J. J. and Chatrou, L. W.} } @article {4983, title = {Evolution of syncarpy and other morphological characters in African Annonaceae: a posterior mapping approach}, journal = {Molecular Phylogenetics and EvolutionMolecular Phylogenetics and Evolution}, volume = {47}, number = {1}, year = {2008}, pages = {302-318}, author = {Couvreur, T.L.P. and Richardson, J. E. and Sosef, M.S.M. and Erkens, R. H. J. and Chatrou, L. W.} } @inbook {4959, title = {Preliminary notes on a revision of Letestudoxa, Pseudartabotrys, and the transfer of Pachypodanthium to Duguetia}, booktitle = {Changing genera. Systematic studies in Neotropical and West African Annonaceae}, year = {1998}, note = {055, 095, 135, 154}, pages = {63-81}, publisher = {PhD-thesis, Utrecht University}, organization = {PhD-thesis, Utrecht University}, address = {Utrecht}, author = {Chatrou, L. W. and Repetur, C. P.}, editor = {Chatrou, L.W.} } @article {4948, title = {Proposal to conserve the name Meiogyne against Fitzalania (Annonaceae) }, journal = {TaxonTaxon}, year = {2011}, author = {Chaowasku, Tanawat and Zijlstra, Gea and Chatrou, L. W.} } @inbook {4950, title = {Revision of the Malmea alliance: Malmea and three new, neotropical genera.}, booktitle = {Changing genera. Systematic studies in Neotropical and West African Annonaceae}, year = {1998}, note = {094, 100, 120, 156}, pages = {105-192}, publisher = {PhD-thesis, Utrecht University}, organization = {PhD-thesis, Utrecht University}, address = {Utrecht}, author = {Chatrou, L. W.}, editor = {Chatrou, L.W.} } @book {4951, title = {Changing genera. Systematic studies in Neotropical and West African Annonaceae}, year = {1998}, note = {055, 071, 094, 095, 100, 120, 135, 154, 156}, publisher = {PhD-thesis, Utrecht University}, organization = {PhD-thesis, Utrecht University}, address = {Utrecht}, author = {Chatrou, L. W.} } @article {4953, title = {Studies in Annonaceae XXXIII. A revision of Fusaea (Baill.) Saff}, journal = {BrittoniaBrittonia}, volume = {51}, number = {2}, year = {1999}, month = {Apr-Jun}, pages = {181-203}, author = {Chatrou, L. W. and He, P.} } @article {4954, title = {Studies in Annonaceae XXXVI. The Duguetia alliance: Where the ways part}, journal = {Annals of the Missouri Botanical GardenAnnals of the Missouri Botanical Garden}, volume = {87}, number = {2}, year = {2000}, pages = {234-245}, author = {Chatrou, L. W. and Koek-Noorman, J. and Maas, P.J.M.} } @inbook {4955, title = {Preliminary list of Ecuadorean Annonaceae}, booktitle = {Estudios sobre diversidad y ecolog{\'\i}a de plantas (Memorias del II Congreso Ecuatoriano de Bot{\'a}nica ... 1995)}, year = {1997}, note = {007, 010, 038, 041, 055, 071, 080, 082, 100, 128, 133, 152, 157, 161, 167, 170, 185, 192, 196, 206}, pages = {97-122}, publisher = {Pontificia Universidad Catolica del Ecuado/Universidad de Aarhus}, organization = {Pontificia Universidad Catolica del Ecuado/Universidad de Aarhus}, address = {Quito/Aarhus}, author = {Chatrou, L. W. and Maas, P. J. M. and Repetur, C. P. and Rainer, H.}, editor = {Valencia, R. and H. Balslev} } @article {4946, title = {Phylogenetic relationships of the Malmeoideae (Annonaceae) based on plastid gene sequences}, journal = {Botanical Journal of the Linnean SocietyBotanical Journal of the Linnean Society}, year = {2012}, note = {***}, author = {Chaowasku, T. and Smets, E. and Van der Ham, Raymond W. J. M. and Chatrou, L. W.} } @article {4923, title = {A revision of the African genus Hexalobus (Annonaceae)}, journal = {Systematic BotanySystematic Botany}, volume = {36}, number = {1}, year = {2011}, pages = {33-48}, author = {Botermans, M. and Sosef, M.S.M. and Chatrou, L. W. and Couvreur, T.L.P.} }