Probable Base Number for Genus x = 10
A. ecuadorensis n=10 ref King et al. 1976
References
Coleman, J. R. 1970. Additional chromosome numbers in some Brazilian Compositae. Rhodora 72: 94-99.
Robinson, H., A. M. Powell, G. D. Carr, R. M. King, and J. F. Weedin. 1989. Chromosome numbers
in Compositae, XVI: Eupatorieae II. Annals of the Missouri Botanical Garden 76: 1004-1011.
King, R. M., D. W. Kyhos, A. M. Powell, P. H. Raven, and H. Robinson. 1976. Chromosome numbers in Compositae. XIII. Eupatorieae.
Annals of the Missouri Botanical Garden 63: 862-888.