Rhynchosia beddomei flowers during December-March with peak flowering during January. The flowers are hermaphroditic, nectariferous, self-compatible and have explosive pollination mechanism adapted for pollination by bees, especially carpenter bees. The flowers not visited by bees fall off while those visited and pollinated by them set fruit. Therefore, R. beddomei is obligately dependent on pollinating bees for pollination which occurs due to tripping of the explosive mechanism.