Calamus rotang.

Botanical name: 

Calamus rotang Linn. Palmae. Rattan Cane.

East Indies. Thunberg saw the fruit of the rattan exposed for sale in Batavia. When ripe this fruit is roundish, as large as a hazelnut and is covered with small, shining scales, laid like shingles, one upon the other. The natives generally suck out the subacid pulp which surrounds the kernel by way of quenching their thirst. Sometimes the fruit is pickled with salt and eaten at tea-time. This palm furnishes rattan canes.

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