(en) A. D. Cotton, « Part 15. Marine Algae », dans A Biological Survey of Clare Island in the County of Mayo, Ireland and of the Adjoining District (Sections 1-3) (1911 - 1915), coll. « Proceedings of the Royal Irish Academy: Archaeology, Culture, History, Literature » (no 31) (lire en ligne), p. 15.1-15.178