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Urera baccifera. International Institute of Tropical Forestry. http://www.fs.fed.us/global/iitf/Urera%20baccifera.pdf
Dutra, H. P., et al. (2006). Dual ant attraction in the Neotropical shrub Urera baccifera (Urticaceae): the role of ant visitation to pearl bodies and fruits in herbivore deterrence and leaf longevity. Functional Ecology 20 252-60. http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2435.2006.01096.x/pdf