Mussaenda frondosa.
Botanical name:
Mussaenda frondosa Linn. Rubiaceae.
A large shrub of tropical eastern Asia and the neighboring islands. This shrub is common in the Ghauts of India, and its strange-looking, white, calycine leaves are eaten.
Sturtevant's Edible Plants of the World, 1919, was edited by U. P. Hedrick.