10 April, 2012

Bird pollination in Calotropis procera (Apocynaceae: Asclepiadoideae)?

by Manuel Pramsohler & Andreas Hilpold

A snapshot of a sunbird visiting a flower of Calotropis procera (Apocynaceae) initiated a discussion on the possibility of bird pollination in this genus. The picture shows a male purple sunbird (Nectarinia asiatica, Passeriformes, Nectariniidae) sitting on a branch of Calotropis procera, its beak reaching into the flower.

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