Abstract
Asteraceae is the largest family among angiosperms, with about 1,600genera and 23,000 species. The family has 20 tribes, and Vernonieae groupthe least understood. Within Lychnophorinae there are several taxa notinvestigated chemically, as well as uncertainty in the phylogeneticposition of the same. The sesquiterpene lactones are substances that maybe related to protection against herbivor…