02292nas a2200205 4500008004100000245014600041210006900187300001200256490000700268520160900275653001501884653001401899653003101913653001701944653001801961653001501979100002001994700002402014856004802038 2011 eng d00aA taxonomic survey of Guatteria section Mecocarpus including the genera Guatteriopsis and Guatteriella p.p. (Annonaceae)0 ataxonomic survey of iGuatteria isection Mecocarpus including the a113-1450 v563 aThis paper deals with a group of species of the Neotropical genus Guatteria (Annonaceae) which are characterized by leaves with tiny warts (verruculae) on both surfaces and by elongate and short-stipitate monocarps (i.e., the length of the monocarp body surpassing the length of the stipe). These species were placed by Fries in Guatteria sect. Mecocarpus (Fries 1939) (the name derives from Ancient Greek μηκων = Poppy and καρπος = fruit: fruit resembling that of Papaver species). All occur in South America, none having been found elsewhere so far. Although there is much doubt nowadays about the taxonomic significance of Fries's sections, we maintain sect. Mecocarpus at present for convenience's sake. Additionally, the former genus Guatteriopsis, united with Guatteria a short time ago (Erkens & Maas 2008b), is now also included in sect. Mecocarpus. The same applies to one of the two species attributed to Guatteriella (also merged with Guatteria by Erkens & Maas 2008b), namely Guatteriella tomentosa R.E.Fr. (not Guatteria tomentosa Rusby) which is put into synonymy with Guatteria trichocarpa Erkens & Maas. One new species is described, namely Guatteria griseifolia Maas & Westra. The two species complexes of G. guianensis and G. decurrens are now treated each as a single polymorphic species. The present study falls within the framework of a planned monograph of the whole genus Guatteria.10aAnnonaceae10aGuatteria10aGUATTERIA SECT. MECOCARPUS10aGUATTERIELLA10aGUATTERIOPSIS10aNeotropics1 aMaas, P., J. M.1 aWestra, L., Y. T. h uhttps://annonaceae.myspecies.info/node/528902158nas a2200241 4500008004100000245013100041210006900172300001200241490000700253520140000260653001501660653001401675653001401689653001501703653002101718653002601739100002101765700002101786700001701807700002001824700002401844856004801868 2007 eng d00aA rapid diversification of rainforest trees (Guatteria; Annonaceae) following dispersal from Central into South America0 arapid diversification of rainforest trees iGuatteriai Annonaceae a399-4110 v443 aSeveral recent studies have suggested that a substantial portion of today'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.10aAnnonaceae10aDispersal10aGuatteria10aNeotropics10aRainforest trees10aRapid diversification1 aErkens, Roy, H J1 aChatrou, Lars, W1 aMaas, Jan, W1 aNiet, Timotheus1 aSavolainen, Vincent uhttps://annonaceae.myspecies.info/node/506002224nas a2200241 4500008004100000245013100041210006900172300001200241490000700253520141300260653001501673653001401688653001401702653001501716653002101731653002601752100002101778700002101799700001701820700002001837700002401857856010101881 2007 eng d00aA rapid diversification of rainforest trees (Guatteria; Annonaceae) following dispersal from Central into South America0 arapid diversification of rainforest trees iGuatteriai Annonaceae a399-4110 v443 a

Several recent studies have suggested that a substantial portion of today'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.

10aAnnonaceae10aDispersal10aGuatteria10aNeotropics10aRainforest trees10aRapid diversification1 aErkens, Roy, H J1 aChatrou, Lars, W1 aMaas, Jan, W1 aNiet, Timotheus1 aSavolainen, Vincent uhttp://www.sciencedirect.com/science/article/B6WNH-4N4J30W-1/2/53ce435f1fe55962b5e1cbbeb334aa50