Re-Evaluation of Praxelis (Asteraceae, Eupatorieae) in Brazil and Description of Praxelis scaturicola, an Unusual Riverine Species

Abstract

Praxelis scaturicola, a new Cerrado biome species, is described and illustrated. The main morphological features of this new species are: i) capitula usually isolated; ii) vinaceous involucral bracts; iii) reduced glabrous leaves well-spaced on the stem. This study also presents informa-tion on aspects of the new species? habitat, as well as field images and illustrations. Praxelis scaturicola is known only from the Parauna municipality in Goias state, Brazil. A key and comments on the Brazilian species of Praxelis are also presented with a special note on the status of P. grandiflora.Additionally, the synonymy of P. macrocarpa under P. capillaris is proposed.