Gigartina lichnoides.

Botanical name: 

Gigartina lichnoides Harvey. Algae. Ceylon Moss.

Ceylon moss is a seaweed much used in the East as a nutritive article of food and for giving consistence to other dishes. It is of a very gelatinous nature and when boiled down is almost wholly convertible into jelly.

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