Phyllostegia mannii, a nonaromatic member of the Lamiaceae (mint) family, is a climbing vine with many-branched, four-sided, hairy stems. The opposite, hairy leaves are shaped like narrow triangles or narrow triangular ovals and are 2 to 5.5 cm (0.8 to 2.2 in) long and 0.7 to 2.3 cm (0.3 to 0.9 in...