Mucuna pruriens - Velvet Bean Seeds
Now this is one itchy bean. Also known as cow itch, the fuzzy hairs on the outside of the fruit are irritating to the skin. Used for many a reason, not excluding its chemistry, this bean is generally not considered edible. The plant itself is great as a green manure and is often ploughed into fields for its high nitrogen content. Seeds are dried for storage and grow easily.