Kew Millennium Seed Bank, UK
Seed from the Kew Millennium Seed Bank collection at Wakehurst, outside London in the UK.
Mucuna sp. (Fabaceae) - hamburger bean; native to Central and South America
Apart from the sea-heart (Entada gigas), the most famous sea beans are the true sea bean (Mucuna sloanei and M. urens), Mucuna urens (Fabaceae), true sea bean or hamburger bean; diameter of seed: c. 2.5cm;
interesting weblinks:
http://waynesword.palomar.edu/mucuna.htm
http://en.wikipedia.org/wiki/Mucuna