1. a medium sized marine algae in the Division Rhodophyta.
2. This red algae consists of a single membranous layer of cells forming a blade attached by a disk holdfast.
3. It grows to a length of 20 to 50 cm long. The blade has the texture of a thin polythene sheet.
4. grows on rock, pebbles, limpets and barnacles.
5. Distribution: recorded from Canada and Europe. Common in Great Britain, Ireland and Isle of Man.
Susan H. Brawley, submitted to U.S. Department of Energy Joint Genome Institute.