Vernonieae is considered sister to the tribe Liabeae.[1][2][3] The tribe originated in southern Africa or Madagascar, and spread to the Americas in at least two different events.[2]
In many works some 80% of the species in this tribe are classified in the genus Vernonia. Other authors, like Harold E. Robinson, divide the tribe into a larger number of small genera.[1]
^ abKeeleya, S. C.; et al. (2007). "A phylogeny of the "evil tribe" (Vernonieae: Compositae) reveals Old/New World long distance dispersal: support from separate and combined congruent datasets (trnL-F, ndhF, ITS)". Molecular Phylogenetics and Evolution. 44 (1): 89–103. doi:10.1016/j.ympev.2006.12.024. PMID17292633.