Maggs, C.A., Ward, B.A., McIvor, L.M., Evans, C.M., Rueness, J. & Stanhope, M.J., 2002. Molecular analyses elucidate the taxonomy of fully corticated, nonspiny species of Ceramium (Ceramiaceae, Rhodophyta) in the British Isles. Phycologia, 41, 409-420