Abstract

CASTRO-CASTRO, Arturo et al. Novedades en el conocimiento de Bidens herzogii (Coreopsideae, Asteraceae), una especie endémica de la provincia biogeográfica del Cerrado en Bolivia. Ecología en Bolivia [online]. 2017, vol.52, n.1, pp.21-32. ISSN 1605-2528.

The morphological limits among some Coreopsideae genera in the Asteraceae family are complex. An example is Bidens herzogii, a taxon first described as a member of the genus Cosmos, but recently transferred to Bidens. The species is endemic to Eastern Bolivia and it grows on the Cerrado biogeographic province. Recently collected specimens, analysis of herbarium specimens, and revisions of literature lead us to propose new data on morphological description and a chromosome counts for the species, a tetraploid, where x = 12, 2n = 48. Lastly, we provide data on geographic distribution and niche modeling of B. herzogii to predict areas of endemism in Eastern Bolivia. This area is already known for this pattern of endemism, and the evidence generated can be used to direct conservation efforts.

Keywords : Bolivian Chiquitanía; Niche modeling; Western Cerrado; Cerrado Occidental; Chiquitanía boliviana; Modelación de nicho.

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