Scattered across an acre like this, growing on blackberry bushes, maypop is one of the most recognizable flowers.

Maypops

Aka Passionflower, Passiflora incarnata is the host plant of the Gulf fritillary butterfly, Dione vanillae. The adult butterflies plant eggs on maypops, and the caterpillars eat the leaves. http://www.okraparadisefarms.com/blog/?p=9756

Climbing on blackberry bushes

-jsq