Abstract
In this paper six new Neotropical species in four genera are described, viz. Annona oxapampae, Duguetia vaupesana, Guatteria castilloi, G. pachyphylla, G. sanctae-crucis and Pseudoxandra xylopiifolia. Furthermore additional data on four poorly known species of Guatteria (G. denudata, G. glauca, G. modesta and G. terminalis) are added.
Highlights
In 1992 Maas and Westra monographed the genus Rollinia in the framework of Flora Neotropica
All the necessary nomenclatural combinations were recently published by Rainer (2007), who is currently monographing the genus Annona
A new species of Annona is described in the present paper which formerly would have fallen under the genus Rollinia
Summary
In 1992 Maas and Westra monographed the genus Rollinia in the framework of Flora Neotropica. A new species of Annona is described in the present paper which formerly would have fallen under the genus Rollinia. A new species from Amazonian Colombia is added. Maas & Westra revised the Neotropical genus Pseudoxandra (22 species) in 2003. In 2005 they added a 23rd species Another new species, only known from one collection from Amazonian Peru, is described. During the last years the former Utrecht Herbarium staff, PhD students, and graduate students were intensively involved in the research of this genus. This involved both phylogenetic (Erkens et al 2007a, b) and revisionary work. In the present article three additional species of Guatteria are described, whereas additional notes on four other species are given
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