Stachytarpheta cayennensis

References

1. [1]Flora of the Lancetilla Valley, Honduras. — Standley P.C. · Field Museum of Natural History; Chicago. · 1931 · http://www.biodiversitylibrary.org ↩︎Rather short on details at times, which is not surprising since so little information was available at the time. Still a useful flora. It can be downloaded from the Internet.
2. [2]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/
3. [3]Contributions from the United States National Herbarium Vol. 27 — Standley P.C. · Smithsonian Institute; Washington. · 1928 · http://www.biodiversitylibrary.org ↩︎Contains a Flora of the Panama Canal zone
4. [4]Medicinal Plants of the Guianas — DeFilipps, R. A.; Maina, S. L.; & Crepin, J. · Smithsonian Museum · http://botany.si.edu/bdg/medicinal/index.html ↩︎A down-loadable PDF document of a book in pre-publication awaiting illustration. An excellent, if rather terse, guide to the traditional medicinal uses of the plants of the region