Here the releve 235 had been extracted from that source is presented as the holotype: France, Bretagne, upper infralittoral, growing on rock face, exposed to wave action (cover scale: + to 5): Laminaria hyperborea 4, Chondrus crispus 2, Ellisolandia elongata 2, Laminaria digitata 2, Palmaria palmata 2, Saccorhiza polyschides 2, Callophyllis laciniata 1, Corallina officinalis 1, Cryptopleura ramosa 1, Dilsea carnosa 1, Furcellaria
lumbricalis 1, Halurus flosculosus 1, Membranoptera alata 1, Osmundea pinnatifida 1, Calliblepharis jubata +, Callithamnion tetragonum +, Ceramium virgatum +, Chondracanthus acicularis +, Claviclonium ovatum +, Codium tomentosum +, Desmarestia aculeata +, Gelidium pulchellum +, Halurus equisetifolius +, Heterosiphonia plumosa +, Plocamium cartilagineum +.