1. Doungyotha Y, Owens JN (2002) The reproductive biology and reproductive success of Pterocarpus macrocarpus Kurz. Biotropica 34(1):58–68.
https://doi.org/10.1646/0006-3606(2002)034[0058:TRBARS]2.0.CO;2
2. Endress PK (1995) Diversity and evolutionary biology of tropical flowers. Cambridge University Press, Cambridge
3. Escobin RP, Payawal PC, Cervancia CR (2004) Pollination syndrome and breeding system of four reforestation tree species in Mt. Makiling, Luzon, Philippines. Philipp Agric Sci 87(2):182–190
4. Frankie GW, Haber WA, Opler PA, Bawa KS (1983) Characteristics and organization of the large bee pollination system in the Costa Rican dry forest. In: Jones CE, Little RJ (eds) Handbook of experimental pollination biology. Scientific and Academic Editions, New York, pp 411–447
5. Janzen DH (1967) Synchronization of sexual reproduction of trees within the dry season in Central America. Evolution 21:620–637