Moraea edulis.

Botanical name: 

Moraea edulis Ker-Gawl. Irideae.

South Africa. The bulbous root is eaten by the Hottentots. When cooked, it has the taste of potatoes. Thunberg says, in Kaffraria, the roots were eaten roasted, boiled, or stewed with milk and appeared to him to be both palatable and nourishing, tasting much like potatoes.

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