Euphorbia.

Euphorbia balsamifera Ait. Euphorbiaceae. Balsam Spurge.

Canary Islands. Its juice is thickened to a jelly and eaten by the natives.

Euphorbia canariensis Linn.

Canary Islands. The natives of Teneriffe are in the habit of removing the bark and then sucking the inner portion of the stem to quench their thirst.

Euphorbia edulis Lour.

Cochin China. It is mentioned as a potherb.

Euphorbia lathyris Linn. Caper Spurge.

Southern Europe. The seeds are used as a substitute for capers but, says Johnson, they are extremely acrid and require long steeping in salt and water and afterwards in vinegar.

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