Hemp

http://www.westonaprice.org/Instead-of-Soybeans...Hemp-and-Kenaf.html

 

Pros: 
Has some omega-3 fatty acids, protein
Cons: 
High in omega-6 fatty acids, prone to oxidation (spoilage) especially since ridiculous US law prohibits selling intact seeds and most products sold in the US have been sitting unrefrigerated on shelves for who knows how long