Description:
Cylindrical cartilaginous fronds, brownish red to pale olive-green (in sunny habitats), to 250 mm high. Main axis not consricted, solid, irregularly branched, ends of brachlets with soft, crowded, ovoid ramuli, themselves occasionally bearing ramuli and filled with a watery mucilage. Attached by branching rhizoidal filaments.

Habitat: On rocks and stones in pools, lower intertidal and shallow subtidal, common, widely distributed.

(In: Seaweed Site - ©Michael D. Guiry - http://seaweed.ucg.ie/descriptions/Gasova.html)