The article is about Apios americana (groundnut), rather than Arachis hypogaea (peanut). They share the same order and family, but are a different genus. The a

The article is about Apios americana (groundnut), rather than Arachis hypogaea (peanut). They share the same order and family, but are a different genus. The article comments that "groundnut" is ambiguous, and refers to a variety of different plants (including peanuts): > "The plant was Apios americana, also known as wild bean, Indian potato, potato bean, and, most commonly, groundnut (though other plants, including peanuts, are also called groundnuts)."