XVI International Botanical Congess
Verbesina L. is a large genus of the Heliantheae Tribe (Asteraceae), that consists of about 300 species of herbs, shrubs and trees, ranging from Eastern Canada to Central Argentina. In Peru it is represented for approximately 50 species that distribute from 500 m to 4000 m, and requiere a monographic study, but at the moment we are presenting a preliminary synopsis, as a result of the critical revision of herbarium material, and of the last collections proceeding mainly from norther Andes. In addition to this we are presenting its morphology, distribution, ecology, uses and phenology, and we are discussing their relationships.