>What mainly interests me is the evolutionary significance of toxins in nectar & pollen.
Perhaps toxins in pollen protect it from being eaten. Pollination would still occur if the nectar is attractive to insects.
What is more difficult to understand is how toxic nectar helps a plant; surely it is there to attract pollinators, so this seems to be a case where nature has got it wrong?
Best wishes
Peter
52°14'44.44"N, 1°50'35"W
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