Probable Base Number for Genus x = 10
References Turner, B. L. and D. Flyr. 1966. Chromosome numbers in the Compositae. X. North American species. American Journal of Botany 53: 24-33.
References
Turner, B. L. and D. Flyr. 1966. Chromosome numbers in the Compositae. X. North American species. American Journal of Botany 53: 24-33.