This genus was named after the human clitoris, for the flowers bear a resemblance to female pudenda. Originally the first described species of the genus was given the name Flos clitoridis ternatensibus in 1678 by Rumpf, a German-born botanist. It was regarded as appropriately named by Johann Philipp Breyne in 1747. Many vernacular names of these flowers in different languages are similarly based on references to a woman's sexual organ. Source: Wikipedia
I've seen this flowering vine along the sea shores since I was kid but didn't know its name. This photo was taken at the beach in Ilocos Norte in early September.
Posted for Today's Flowers