1. Alvim, P. de T. andR. Alvim. 1978. Relation of climate to growth periodicity in tropical trees. Pages 445–464in P. B. Tomlinson and M. H. Zimmermann (eds.). Tropical trees as living systems. Cambridge University Press, New York.
2. Andrade-Lima, D. de. 1957. Notas para a fenologia da zona da mata de Pernambuco. Rev. de Biologia (Lisboa)1(2): 125–135.
3. —. 1977. Preservation of the flora of northeastern Brazil. Pages 234–239in G. T. Prance and T. S. Elias (eds.). Extinction is forever. The New York Botanical Garden, Bronx, New York.
4. Berg, C. C. 1972. Olmedieae, Brosimeae (Moraceae). Fl. Neotrop. Monogr.7: 1–228.
5. Berg, O. 1858. Myrtaceae.In Martius, C. F. P. (ed.). Flora Brasiliensis14(1): 1–636,t. 1–82.