This "sweet potato" was a crop found by the Destiny expedition on a Jungle planet in an unnamed galaxy and was named by MSgt. Ronald Greer based on its appearance. In actuality, the plant has a very unpleasant taste, but is edible. Dr. Adam Brody also extracted some purple dye from these to use in a practical joke on Sgt. Hunter Riley, unfortunately Riley heard about the prank and had a pre-recorded Kino video play while Brody and Eli Wallace watched. When Brody went to investigate he ended up covered in the dye. (Kino: "Wait For It")