The common name for the red seaweed Palmaria palmata (formerly Rhodymenia palmata). The thallus is flattened and usually dichotomously branched. It grows in the intertidal zone and at low-water mark, attached to rocks or to other seaweeds by a discoid holdfast. It has been used widely as food, although it is reputed to be tough and somewhat flavourless. See also pepper dulse.
Subjects: Plant Sciences and Forestry.