The Alate Species of <I>Baccharis</I> (Compositae-Astereae) of the North Andes

Abstract

Abstract Five species and one hybrid of Baccharis with alate stems are recognized in the northern Andes between Colombia and central Peru, of which three species are endemic. A new species, B. woytkowskii, is described from northern Peru. Two species are restricted to northern Peru, and all northern Andean species occur there. Three species also occur in Ecuador and a single species in Colombia. Baccharis subbimera is neotypified and the species endemic to the northern Andes are described and illustrated. Morphological delimitation of species is discussed, and a determination key is provided.