Description
The narrow and long leaf is composed of two layers and has marginal spines. The thallus is usually simple, sometimes branched once. The midrib is deep and is difficult to see. It has a strong twisted appearance.
Size
The leaf can grow to a length of 25 cm, with a width of 1,5 cm.

Colour
Dark red.

Habitat
From the deeper subtidal zone (about 30 meters).

Distribution
Mediterranean and Adriatic Sea but also in the northeast Atlantic area of Spain to West Africa.