Canavalia  rosea  (SW.) DC. Bay bean   Fabaceae

Canavalia  gladiata  (Jacq.) DC. Sword bean   Fabaceae

Bay bean vines, Canavalia spp., often form tangled masses on tropical beaches.  The fresh unripe seeds of Canavalia rosea are considered poisonous but very young cooked pods have been eaten as snapbeans. 3  Seeds have been found in burial sites in Yucatan, Mexico and Peru dating from 300 B.C. to 900 A.D.

They were used by sailors around the Gulf of Mexico as a substitute for marijauana.4

In Mexico the seeds are worn or carried to deflect the evil eye.