Xanthosoma caracu

Xanthosoma caracu (yautia horqueta) is a species of edible plant described by Karl Koch and Carl David Bouché. It is native to South America and cultivated in Puerto Rico.

Description
Xanthosoma carau grows to between 5 ft to 6 ft in height. The leaves are bluish-green and glossy on top and pale underneath, growing up to 2 ft long and 15 in wide.

Toxicity
The entire plant contains a toxin which requires it to be cooked before it can be safely eaten.

Uses
The corms and leaves are edible and are cultivated for food in Mexico, the Caribbean (including Puerto Rico) and northern South America. The corms are high in starch.