Lindström, A.J., Calonje, M., Stevenson, D., Husby, C. & Taylor, A. (2013) Clarification of Zamia acuminata and a new Zamia species from Coclé Province, Panama. Phytotaxa 98 (2): 27–42. https://doi.org/10.11646/phytotaxa.98.2.1