Ken, if this doesn't belong in Science & Nature, please move it. I have maypops growing around my goldfish pond. This morning, I noticed some caterpillars on the vines. I Googled them. They are the caterpillars of Gulf Fritillary butterflies. They are one of only two caterpillars who feed on maypop plants. They feed on no other plants. Maypops contain a substance that is poisonous to other caterpillars. This is a bloom on the plant. This is the fruit of the plant. This one is beginning to ripen. In the spring, bumblebees and other insects feast on the nectar. I'm not sure but I think the birds feed on the fruits later on. The seeds inside are edible. I remember eating them when I was growing up. You put the seeds in your mouth and get the juice out of them then spit the seeds out. The juice has a sweet, nectar like taste. But you would have to eat an awful lot of them to get a tummy full. I Googled maypop recipes and found that you can make a tasty drink and jelly from them.