Erythroxylaceae (or coca family) is a family of flowering trees and shrubs consisting of 4 genera and approximately 242 species. The four genera are Aneulophus Benth, Erythroxylum P. Br, Nectaropetalum Engl., and Pinacopodium (Hegnauer 1980, 279). The best-known species are the coca plants, particularly Erythroxylum coca, the source of the drug cocaine.