Seeds of Mucuna species showing two distinct "smileys." A. Seed from a pod collected in Golfito, Costa Rica. Originally identified as M. urens, the smiley is more similar to M. sloanei. B. Drift seed of M. urens collected on a beach in Belize. Note the thinner, upcurved smiley and reddish coloration. C. Drift seed of M. sloanei from Belize showing a thicker, blocky shaped smiley. The latter species also occurs in the Monteverde Cloud Forest of Costa Rica.