Chaetomorpha
melagonium
(Weber et Mohr) Kutzing, 1845
Lenght: 2-20 cm Width: 100-200 µm
Filaments coarse, erect, solitary or in turfs, ocassionally in
entangled masses. Lithophyte. In sublitoral down to 14m of depth, among
Laminariales, in semi-sheltered and exposed localities. Common, but
sparse boreal-Arctic species.