(Nassauvieae, Asteraceae), a new species of endemic to the Andes of Central Chile, and insights into the systematics of Nassauviae.

A new species, , endemic to a restricted area of the Andes of Central Chile, is here described. Using newly sequenced nDNA and cpDNA data, the phylogenetic affinities of and closely related taxa within Nassauvieae are revisited. This new species shows a unique set of characters that clearly distinguish it from other species of .

Speciation and evolution of growth form in D. C. (Dalbergieae, Fabaceae): the relevance of Andean uplift and aridification.

The Andean uplift and the concomitant aridification drove the rapid diversification of several plant lineages that were able to colonize warmer and drier habitats at low elevations and wetter and colder habitats at high elevations. These transitions may be facilitated by shifts in plant strategies to cope with drought and cold, which in turn can trigger episodes of accelerated species diversification. Here, we used four nuclear DNA markers to infer phylogenetic relationships of 80 species of annuals, perennial herbs, shrubs and small shrubs that occur in Chile and Argentina.