01954nas a2200205 4500008004100000022001400041245007900055210006900134300001400203490000800217520131000225653001801535653001501553653001401568100002801582700002801610700002001638700002101658856006901679 2014 eng d a1179-316300aGuatteria darienensis (Annonaceae), a new species from Panama and Colombia0 aGuatteria darienensis Annonaceae a new species from Panama and C a149–1560 v1733 aGuatteria Ruiz & Pavón (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 Chocó 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.10aa new species10aAnnonaceae10aGuatteria1 aGuerrero, Susana, Arias1 aSanchez, Dario, Sanchez1 aMaas, Paul, J M1 aErkens, Roy, H J uhttps://www.biotaxa.org/Phytotaxa/article/view/phytotaxa.173.2.502158nas 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