Species:

Note: Dark red blades tapering to a short stipe. Several blades often originate from a common attachment disc. The blades can grow to 50 cm, and large blades are normally torn and with holes. Small specimens can be confused with Palmaria palmata. The two species can easily be separated by the structure of the medulla, which are composed of elongated and branched filaments in this species, and of rounded cells in P. palmata.

Note: Cross section showing elongated filaments of the medulla and rounded cortex cells