Heliocarpus mexicanus

References

1. [1]Flora of Guatemala — Standley P.C. & J. A. Steyermark · 1946 - 1976 · http://www.archive.org/ ↩︎A superb reference, though somewhat dated. Gives lots of plant uses as well as information on plant habit and habitat. The entire flora (13 volumes) can now be downloaded from http://www.archive.org/
2. [2]Annals of the Missouri Botanical Garden Vol. 36 — Missouri Botanical Gardens; Mass. · 1949 · http://www.biodiversitylibrary.org ↩︎A botanical journal, it contains a monograph of the genus Heliocarpus. It can be downloaded from the Internet.