Chemotaxonomy of Gonospermum and related genera

Sesquiterpenes lactones isolated from Gonospermum and Lugoa, as well as endemic Canarian species of Tanacetum show a close relationship, and feature highly oxidized eudesmane or germacrane lactones. The presence of these types of lactones supports the proposal to group them in a monophyletic group in the Canary Islands.