@article {guerrero_guatteria_2014, title = {Guatteria darienensis (Annonaceae), a new species from Panama and Colombia}, journal = {Phytotaxa}, volume = {173}, number = {2}, year = {2014}, pages = {149{\textendash}156}, abstract = {Guatteria Ruiz \& Pav{\'o}n (1794: 85) is the largest genus of Annonaceae with about 210 recognized species (Chatrou et al. 2012, Maas et al. 2011). It comprises small- to medium- sized trees, rarely canopy trees or shrubs, and only two species are lianas, Guatteria scandens Ducke (1925:10) and G. fractiflexa Maas \& Westra (2008: 491; Erkens et al. 2008). It is widely distributed throughout Mesoamerica, the Caribbean, and tropical South America (Erkens \& Maas 2008). Species of Guatteria are common members of Neotropical forests where they occupy a wide variety of habitats, such as lowland rain forests, gallery forests, semideciduous forests, coastal forests, inundated forests, savannas and montane forests (Erkens et al. 2007b). However, the highest species diversity is found in the Amazon Basin with approximately half of the species occurring there. Central America harbours ca. 30 species, mostly endemics (Erkens et al. 2008) of which ca. 20 species occur in Panama, a highly under-collected country with respect to Guatteria (Erkens et al. 2006). In the adjacent Colombian Choc{\'o} region, we found ca. ten endemic species, and to date, only two species, Guatteria aberrans Erkens \& Maas (2006: 201) and the new species described in this paper, are restricted to Panama and northwestern Colombia.}, keywords = {a new species, Annonaceae, Guatteria}, issn = {1179-3163}, doi = {10.11646/phytotaxa.173.2.5}, url = {https://www.biotaxa.org/Phytotaxa/article/view/phytotaxa.173.2.5}, author = {Guerrero, Susana Arias and Sanchez, Dario Sanchez and Maas, Paul J. M. and Erkens, Roy H. J.} } @article {maas_twelve_2019, title = {Twelve new and exciting Annonaceae from the Neotropics}, journal = {PhytoKeys}, volume = {126}, year = {2019}, month = {jul}, pages = {25{\textendash}69}, abstract = {As a result of concerted efforts of the community of Annonaceae taxonomists, increasingly detailed knowledge of the diversity of the Neotropical genera has been documented. With the exception of just two large genera, Annona and Xylopia, all Neotropical Annonaceae have been revised within the last 25 years. Subsequent to these publications, many new specimens have been collected and sent to us in Leiden for identification. These included a number that, despite the advanced state of taxonomic knowledge, proved to represent rarely collected, undescribed species. Here we describe 12 new species of Annona, Guatteria, Klarobelia, Tetrameranthus, and Xylopia. These species serve to illustrate the still underestimated diversity of the Neotropical flora, even in well studied plant groups like Annonaceae.}, issn = {1314-2003}, doi = {10.3897/phytokeys.126.33913}, url = {https://phytokeys.pensoft.net/article/33913/}, author = {Maas, Paul J. M. and Westra, Lubbert Y. Th and Chatrou, Lars W. and Verspagen, Nadja and Rainer, Heimo and Zamora, Nelson A. and Erkens, Roy H. J.} } @article {5750, title = {Phylogenomics of the Major Tropical Plant Family Annonaceae Using Targeted Enrichment of Nuclear Genes}, journal = {Frontiers in Plant Science}, volume = {9}, year = {2019}, month = {Sep-01-2019}, abstract = {

Targeted enrichment and sequencing of hundreds of nuclear loci for phylogenetic reconstruction is becoming an important tool for plant systematics and evolution. Annonaceae is a major pantropical plant family with 109 genera and ca. 2450 species, occurring across all major and minor tropical forests of the world. Baits were designed by sequencing the transcriptomes of five species from two of the largest Annonaceae subfamilies. Orthologous loci were identified. The resulting baiting kit was used to reconstruct phylogenetic relationships at two different levels using concatenated and gene tree approaches: a family wide Annonaceae analysis sampling 65 genera and a species level analysis of tribe Piptostigmateae sampling 29 species with multiple individuals per species. DNA extraction was undertaken mainly on silicagel dried leaves, with two samples from herbarium dried leaves. Our kit targets 469 exons (364,653 bp of sequence data), successfully capturing sequences from across Annonaceae. Silicagel dried and herbarium DNA worked equally well. We present for the first time a nuclear gene-based phylogenetic tree at the generic level based on 317 supercontigs. Results mainly confirm previous chloroplast based studies. However, several new relationships are found and discussed. We show significant differences in branch lengths between the two large subfamilies Annonoideae and Malmeoideae. A new tribe, Annickieae, is erected containing a single African genus Annickia. We also reconstructed a well resolved species-level phylogenetic tree of the Piptostigmteae tribe. Our baiting kit is useful for reconstructing well supported phylogenetic relationships within Annonaceae at different taxonomic levels. The nuclear genome is mainly concordant with plastome information with a few exceptions. Moreover, we find that substitution rate heterogeneity between the two subfamilies is also found within the nuclear compartment, and not just plastomes and ribosomal DNA as previously shown. Our results have implications for understanding the biogeography, molecular dating and evolution of Annonaceae.

}, doi = {10.3389/fpls.2018.01941}, url = {https://www.frontiersin.org/article/10.3389/fpls.2018.01941/fullhttps://www.frontiersin.org/article/10.3389/fpls.2018.01941/full}, author = {Couvreur, Thomas L. P. and Helmstetter, Andrew J. and Koenen, Erik J. M. and Bethune, Kevin and Brand{\~a}o, Rita D. and Little, Stefan A. and Sauquet, Herv{\'e} and Erkens, Roy H. J.} } @article {5291, title = {An updated index to genera, species, and infraspecific taxa of Neotropical Annonaceae}, journal = {Nordic Journal of BotanyNordic Journal of Botany}, volume = {29}, number = {3}, year = {2011}, note = {001, 007, 010, 016, 023, 024, 028, 030, 036, 038, 041, 044, 047, 049, 054, 055, 063, 070, 071, 072, 079, 080, 081, 082, 083, 086, 087, 088, 094, 100, 120, 121, 128, 130, 133, 142, 145, 152, 155, 156, 157, 161, 163, 167, 168, 170, 174, 181,183, 185, 191, 192, 195, 196, 197, 198, 203, 206, 208, 209}, pages = {257-356}, publisher = {Blackwell Publishing Ltd}, abstract = {Annonaceae form the most diverse family within the Magnoliales. In 1990 an Index to generic names of Annonaceae was published and in 1994 an Index to Neotropical species of Annonaceae was compiled. Especially the latter proved an immensely useful tool for Neotropical botanists. Here, we present an updated Index of all valid names in Neotropical Annonaceae on the genus and species level. It also includes nomina nuda and orthographic variants. Reference and year of first publication, synonymy, and typification are mentioned. Several new combinations are made. In addition, some lectotypifications are proposed. A supplementary list is added of all Neotropical type collections.}, isbn = {1756-1051}, author = {Maas, Paul J. M. and Westra, Lubbert Y. T.h. and Rainer, Heimo and Lob{\~a}o, Adriana Q. and Erkens, Roy H. J.} } @article {5058, title = {Radiations and key innovations in an early branching angiosperm lineage (Annonaceae; Magnoliales)}, journal = {Botanical Journal of the Linnean SocietyBotanical Journal of the Linnean Society}, volume = {169}, number = {1}, year = {2012}, pages = {117-134}, publisher = {Blackwell Publishing Ltd}, abstract = {Biologists are fascinated by species-rich groups and have attempted to discover the causes for their abundant diversification. Comprehension of the causes and mechanisms underpinning radiations and detection of their frequency will contribute greatly to the understanding of the evolutionary origin of biodiversity and its ecological structure. A dated and well-resolved phylogenetic tree of Annonaceae was used to study diversification patterns in the family in order to identify factors that drive speciation and the evolution of morphological (key) characters. It was found that, except for Goniothalamus, the largest genera in the family are not the result of radiations. Furthermore, the difference in species numbers between subfamilies Annonoideae (former long branch clade) and Malmeoideae (former short branch clade) cannot be attributed to significant differences in the diversification rate. Most of the speciation in Annonaceae is not distinguishable from a random branching process (i.e. chance), and no special explanations are therefore necessary for the distribution of species richness across the major part of the phylogenetic tree for Annonaceae. Only for a small number of clades can key innovations be invoked to explain the elevated rate of diversification.~{\textcopyright} 2012 The Linnean Society of London, Botanical Journal of the Linnean Society, 2012, 169, 117{\textendash}134.}, keywords = {adaptive radiation, rate shift, sister-group comparison, stochastic branching pattern, temporal method, topological method}, isbn = {1095-8339}, author = {Erkens, Roy H. J. and Chatrou, Lars W. and Couvreur, Thomas L. P.} } @article {5060, title = {A rapid diversification of rainforest trees (Guatteria; Annonaceae) following dispersal from Central into South America}, journal = {Molecular Phylogenetics and EvolutionMolecular Phylogenetics and Evolution}, volume = {44}, year = {2007}, pages = {399-411}, abstract = {Several recent studies have suggested that a substantial portion of today{\textquoteright}s plant diversity in the Neotropics has resulted from the dispersal of taxa into that region rather than vicariance, but more data are needed to substantiate this claim. Guatteria (Annonaceae) is, with 265 species, the third largest genus of Neotropical trees after Inga (Fabaceae) and Ocotea (Lauraceae), and its widespread distribution and frequent occurrence makes the genus an excellent model taxon to study diversification patterns. This study reconstructed the phylogeny of Guatteria and inferred three major biogeographical events in the history of the genus: (1) a trans-oceanic Miocene migration from Central into South America before the closing of the Isthmus of Panama; (2) a major diversification of the lineage within South America; and (3) several migrations of South American lineages back into Central America via the closed Panamanian land bridge. Therefore, Guatteria is not an Amazonian centred-genus sensu Gentry but a major Miocene diversification that followed its dispersal into South America. This study provides further evidence that migration into the Neotropics was an important factor in the historical assembly of its biodiversity. Furthermore, it is shown that phylogenetic patterns are comparable to those found in Ocotea and Inga and that a closer comparison of these genera is desirable.}, keywords = {Annonaceae, Dispersal, Guatteria, Neotropics, Rainforest trees, Rapid diversification}, author = {Erkens, Roy H. J. and Chatrou, Lars W. and Maas, Jan W. and van der Niet, Timotheus and Savolainen, Vincent} } @article {5065, title = {Increasing diversity in the species-rich genus Guatteria (Annonaceae)}, journal = {Blumea - Journal of Plant Taxonomy and Plant GeographyBlumea - Journal of Plant Taxonomy and Plant Geography}, volume = {53}, year = {2008}, pages = {467-514}, author = {Erkens, Roy H. J. and Westra, Lubbert Y. T. H. and Maas, Paul J. M.} } @article {4981, title = {Early evolutionary history of the flowering plant family Annonaceae: steady diversification and boreotropical geodispersal}, journal = {Journal of BiogeographyJournal of Biogeography}, volume = {38}, number = {4}, year = {2011}, pages = {664-680}, publisher = {Blackwell Publishing Ltd}, abstract = {Abstract Aim Rain forest-restricted plant families show disjunct distributions between the three major tropical regions: South America, Africa and Asia. Explaining these disjunctions has become an important challenge in biogeography. The pantropical plant family Annonaceae is used to test hypotheses that might explain diversification and distribution patterns in tropical biota: the museum hypothesis (low extinction leading to steady accumulation of species); and dispersal between Africa and Asia via Indian rafting versus boreotropical geodispersal. Location Tropics and boreotropics. Methods Molecular age estimates were calculated using a Bayesian approach based on 83\% generic sampling representing all major lineages within the family, seven chloroplast markers and two fossil calibrations. An analysis of diversification was carried out, which included lineage-through-time (LTT) plots and the calculation of diversification rates for genera and major clades. Ancestral areas were reconstructed using a maximum likelihood approach that implements the dispersal{\textendash}extinction{\textendash}cladogenesis model. Results The LTT plots indicated a constant overall rate of diversification with low extinction rates for the family during the first 80~Ma of its existence. The highest diversification rates were inferred for several young genera such as Desmopsis, Uvariopsis and Unonopsis. A boreotropical migration route was supported over Indian rafting as the best fitting hypothesis to explain present-day distribution patterns within the family. Main conclusions Early diversification within Annonaceae fits the hypothesis of a museum model of tropical diversification, with an overall steady increase in lineages possibly due to low extinction rates. The present-day distribution of species within the two largest clades of Annonaceae is the result of two contrasting biogeographic histories. The {\textquoteleft}long-branch clade{\textquoteright} has been diversifying since the beginning of the Cenozoic and underwent numerous geodispersals via the boreotropics and several more recent long-distance dispersal events. In contrast, the {\textquoteleft}short-branch clade{\textquoteright} dispersed once into Asia via the boreotropics during the Early Miocene and further dispersal was limited.}, keywords = {Biogeographic hypothesis testing, boreotropical hypothesis, diversification rates, Indian rafting, K/Pg boundary, LTT plots, molecular dating, museum model}, isbn = {1365-2699}, author = {Couvreur, Thomas L. P. and Pirie, Michael D. and Chatrou, Lars W. and Saunders, Richard M. K. and Su, Yvonne C. F. and Richardson, James E. and Erkens, Roy H. J.} } @article {4952, title = {The natural history of Annonaceae}, journal = {Botanical Journal of the Linnean SocietyBotanical Journal of the Linnean Society}, volume = {169}, number = {1}, year = {2012}, pages = {1-4}, publisher = {Blackwell Publishing Ltd}, isbn = {1095-8339}, author = {Chatrou, Lars W. and Erkens, Roy H. J. and Richardson, James E. and Saunders, Richard M. K. and Fay, Michael F.} } @article {4957, title = {A new subfamilial and tribal classification of the pantropical flowering plant family Annonaceae informed by molecular phylogenetics}, journal = {Botanical Journal of the Linnean SocietyBotanical Journal of the Linnean Society}, volume = {169}, number = {1}, year = {2012}, pages = {5-40}, publisher = {Blackwell Publishing Ltd}, abstract = {The pantropical flowering plant family Annonaceae is the most species-rich family of Magnoliales. Despite long-standing interest in the systematics of Annonaceae, no authoritative classification has yet been published in the light of recent molecular phylogenetic analyses. Here, using the largest, most representative, molecular dataset compiled on Annonaceae to date, we present, for the first time, a robust family-wide phylogenetic tree and subsequent classification. We used a supermatrix of up to eight plastid markers sequenced from 193 ingroup and seven outgroup species. Some of the relationships at lower taxonomic levels are poorly resolved, but deeper nodes generally receive high support. Annonaceae comprises four major clades, which are here given the taxonomic rank of subfamily. The description of Annonoideae is amended, and three new subfamilies are described: Anaxagoreoideae, Ambavioideae and Malmeoideae. In Annonoideae, seven tribes are recognized, one of which, Duguetieae, is described as new. In Malmeoideae, seven tribes are recognized, six of which are newly described: Dendrokingstonieae, Fenerivieae, Maasieae, Malmeeae, Monocarpieae and Piptostigmateae. This new subfamilial and tribal classification is discussed against the background of previous classifications and characters to recognize subfamilies are reviewed.~{\textcopyright} 2012 The Linnean Society of London, Botanical Journal of the Linnean Society, 2012, 169, 5{\textendash}40.}, keywords = {plastid markers, subfamilies, supermatrix, tribes}, isbn = {1095-8339}, author = {Chatrou, Lars W. and Pirie, Michael D. and Erkens, Roy H. J. and Couvreur, Thomas L. P. and Neubig, Kurt M. and Abbott, J. Richard and Mols, Johan B. and Maas, Jan W. and Saunders, Richard M. K. and Chase, Mark W.} } @article {676, title = {Radiations and key innovations in an early branching angiosperm lineage (Annonaceae; Magnoliales)}, journal = {Botanical Journal of the Linnean Society}, volume = {169}, number = {1}, year = {2012}, pages = {117-134}, publisher = {Blackwell Publishing Ltd}, abstract = {

Biologists are fascinated by species-rich groups and have attempted to discover the causes for their abundant diversification. Comprehension of the causes and mechanisms underpinning radiations and detection of their frequency will contribute greatly to the understanding of the evolutionary origin of biodiversity and its ecological structure. A dated and well-resolved phylogenetic tree of Annonaceae was used to study diversification patterns in the family in order to identify factors that drive speciation and the evolution of morphological (key) characters. It was found that, except for Goniothalamus, the largest genera in the family are not the result of radiations. Furthermore, the difference in species numbers between subfamilies Annonoideae (former long branch clade) and Malmeoideae (former short branch clade) cannot be attributed to significant differences in the diversification rate. Most of the speciation in Annonaceae is not distinguishable from a random branching process (i.e. chance), and no special explanations are therefore necessary for the distribution of species richness across the major part of the phylogenetic tree for Annonaceae. Only for a small number of clades can key innovations be invoked to explain the elevated rate of diversification.\ \© 2012 The Linnean Society of London, Botanical Journal of the Linnean Society, 2012, 169, 117\–134.

}, keywords = {adaptive radiation, rate shift, sister-group comparison, stochastic branching pattern, temporal method, topological method}, isbn = {1095-8339}, url = {http://dx.doi.org/10.1111/j.1095-8339.2012.01223.x}, author = {Erkens, Roy H. J. and Chatrou, Lars W. and Couvreur, Thomas L.P.} } @article {666, title = {A concise bibliographic overview of Annonaceae}, journal = {Botanical Journal of the Linnean Society}, volume = {169}, number = {1}, year = {2012}, pages = {41-73}, publisher = {Blackwell Publishing Ltd}, abstract = {It is important that taxonomic knowledge is disseminated by those who possess it. This can be carried out via online databases, printed publications or training in taxonomic practice. For Annonaceae, the online database AnnonBase includes all published names of Annonaceae at any rank worldwide. Recently, an updated index to genera, species and infraspecific taxa of Neotropical Annonaceae was published in hard copy. This manuscript contains a concise update to the Bibliography of Annonaceae published by the late E. A. Mennega in 1993. Since his publication, much work has been carried out on systematics and evolution of Annonaceae, with the advent of molecular phylogenetics providing an additional stimulus. Here, however, we concentrate only on taxonomic papers focusing specifically on the description and circumscription of taxa (e.g. revisions, monographs, floras, checklists, descriptions of new species or phylogenetic studies that show monophyly/polyphyly/paraphyly of genera). The index should provide an easy entrance into the most important taxonomic literature on Annonaceae from 1900 onwards for the trained and untrained taxonomist with an interest in Annonaceae.~{\textcopyright} 2012 The Linnean Society of London, Botanical Journal of the Linnean Society, 2012, 169, 41{\textendash}73.}, keywords = {dissemination, outreach, taxonomic impediment, taxonomic literature}, isbn = {1095-8339}, url = {http://dx.doi.org/10.1111/j.1095-8339.2012.01232.x}, author = {Erkens, Roy H. J. and Mennega, Erik A. and Westra, Lubbert Y. Th} } @article {606, title = {From Africa via Europe to South America: migrational route of a species-rich genus of Neotropical lowland rain forest trees (Guatteria, Annonaceae)}, journal = {Journal of Biogeography}, volume = {36}, number = {12}, year = {2009}, note = {10.1111/j.1365-2699.2009.02162.x}, pages = {2338-2352}, isbn = {1365-2699}, url = {http://dx.doi.org/10.1111/j.1365-2699.2009.02162.x}, author = {Erkens, Roy H. J. and Jan. W. Maas and Couvreur, Thomas L.P.} } @article {81, title = {A rapid diversification of rainforest trees (Guatteria; Annonaceae) following dispersal from Central into South America}, journal = {Molecular Phylogenetics and Evolution}, volume = {44}, year = {2007}, pages = {399-411}, abstract = {

Several recent studies have suggested that a substantial portion of today\&$\#$39;s plant diversity in the Neotropics has resulted from the dispersal of taxa into that region rather than vicariance, but more data are needed to substantiate this claim. Guatteria (Annonaceae) is, with 265 species, the third largest genus of Neotropical trees after Inga (Fabaceae) and Ocotea (Lauraceae), and its widespread distribution and frequent occurrence makes the genus an excellent model taxon to study diversification patterns. This study reconstructed the phylogeny of Guatteria and inferred three major biogeographical events in the history of the genus: (1) a trans-oceanic Miocene migration from Central into South America before the closing of the Isthmus of Panama; (2) a major diversification of the lineage within South America; and (3) several migrations of South American lineages back into Central America via the closed Panamanian land bridge. Therefore, Guatteria is not an Amazonian centred-genus sensu Gentry but a major Miocene diversification that followed its dispersal into South America. This study provides further evidence that migration into the Neotropics was an important factor in the historical assembly of its biodiversity. Furthermore, it is shown that phylogenetic patterns are comparable to those found in Ocotea and Inga and that a closer comparison of these genera is desirable.

}, keywords = {Annonaceae, Dispersal, Guatteria, Neotropics, Rainforest trees, Rapid diversification}, url = {http://www.sciencedirect.com/science/article/B6WNH-4N4J30W-1/2/53ce435f1fe55962b5e1cbbeb334aa50 }, author = {Erkens, Roy H. J. and Chatrou, Lars W. and Maas, Jan W. and van der Niet, Timotheus and Savolainen, Vincent} }