1. Beach, J. H., 1982: Beetle pollination ofCyclanthus bipartitus (Cyclanthaceae). ? Amer. J. Bot69: 1074?1081.
2. ?, 1984: The reproductive biology of the peach or ?pejibaya? palm (Bactris gasipaes) and a wild congener (B. porschiana) in the atlantic lowlands of Costa Rica. ? Principes28: 107?119.
3. Búrquez, A., Sarukhán, J., Pedroza, A. L., 1987: Floral biology of a primary forest palm,Astrocaryum mexicanum Liebm. ? Bot. J. Linn. Soc.94: 407?419.
4. Fries, R. E., 1931: Revision der Arten einiger Annonaceen-Gattungen. ? Acta Horti Bergiani10: 129?341, tt. 1?27.
5. ?, 1959:Annonaceae. ? InMelchior, H., (Ed.): Die natürlichen Pflanzenfamilien. 2nd edn.17 a II. ? Berlin: Duncker & Humblot.