Calotropis gigantea.

Botanical name: 

Calotropis gigantea Ait. Asclepiadeae. Bow-String Hemp.

East India. According to Twemlow, an intoxicating liquor called bar is obtained from the plant by the Hill People about Mahableshwur. According to Royle, it yields a kind of manna.

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