Dumontia furcata Gloiopeltis furcata, commonly known as glueweed, jelly moss and fukuro-funori (Japan), is a marine alga that is widely distributed in the North Pacific Ocean, along the shorelines of China, Taiwan, Korea, Japan, and the Pacific shores of Russia; and from the Aleutian Islands south to Baja California.

G. furcata has long been utilized as a food source in Asia, where it is also used as a sizing material in silk and other textiles.

Studies show that extracts of G. furcata inhibit the growth of several human cancer cell lines, and can significantly lower blood glucose levels.

[1] G. furcata's thallus is reddish brown to golden yellow, up to 5 cm (2 in) tall.

The basal crust is perennial, and produces a new crop of branches every year.