Corky passionvine
Passiflora suberosa

Found in South Florida, Texas and the West Indies.  This is an easy plant to grow on a fence or even as an ivy-like ground cover. 

The dark green leaves are a food plant for the caterpillars of the Zebra Longwing, Gulf Fritillary, and Julia butterflies. 

Can tolerate some shade and grows well when planted with Firebush.  Try this combination outside of your screened patio and enjoy watching the caterpillars, adult butterflies and hummingbirds from your seat.

The flowers are small and the fruit is pea sized and black.  After several years the stem becomes thick and corky.