Cotyledon edulis, Cotyledon spinosa, Cotyledon umbilicus.

Cotyledon edulis Brewer. Crassulaceae.

California. The young leaves are eaten by the Indians.

Cotyledon spinosa Linn.

North America. The leaves are agreeably acid and are eaten.

Cotyledon umbilicus Linn. Navelwort.

Europe and the adjoining portions of Asia. This plant is classed by Loudon as a spinach.

Sturtevant's Edible Plants of the World, 1919, was edited by U. P. Hedrick.