Abstract

Present study is aimed to reveal the co evolutionary relationship of four butterfly pollinated flowers Cadaba fruticosa (L.) Druce, Caesalpinia pulcherrima (L.) Sw., Clerodendrum infortunatum L. and Clerodendrum phlomidis L.f. Not only the floral morphology, nectar quality the main energy source of insects including butterflies is also a promiscuous character which excludes other insects than specified. So, nectar characters of these flowers are studied and found a good correlation with butterfly preferred nectars. Here one-sided adaptation was there and it was described as “non-promiscuous”. It is one of the most significant events in organic evolution.

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