A Commissaris's long-tongued bat (Glossophaga commissarisi) approaching a "ripe" flower just prior to landing. Echolocation is transmitted through the nose and aimed using the nose-leaf. Note nose-leaf aimed at the flower's "banner" reflector.The sea bean (Mucuna holtonii), is a legume that grows along streams, rivers and other rain forest edges from southern Mexico and Belize throughout Central America.   Its anthers and stamens are sized and shaped to effectively fire pollen onto the rumps of bats. Inflorescences hang below the surrounding foliage on 3-6-foot-long stems known as peduncles that facilitate approaches by flying bats.  A flower that is ready to be pollinated signals its readiness by raising its dish-shaped banner (the vexillum), adapted to strongly reflect echoes from many different directions.  The reflected echos guide an approaching bat to put its tongue in an approximately 2-mm-wide space between 2 petals known as wings. When a tongue pushes into this small opening, the flower is triggered to fire pollen onto the bat’s rump. This plant's seeds are made into lovely necklaces, bracelets and other handcraft items. Pollination