. In the book, Méntrida describes gusô as being a type of seaweed gathered from the beach by the Visayan peoples of the Philippines. They were then cooked until they melt, and then allowed to congeal into a sour dish.

The 1889 book The Useful Native Plants of Australia records that Eucheuma speciosa (now a synonym of Betaphycus speciosum) was commonly known as the "Jelly Plant' in Western Australia and that "This