1846 J. Lindley 23 Ceramiaceæ.—Rosetangles... Seaweeds of a rose or purplish colour, seldom olive or violet.
1884 Oct. 471/1 Carrageen moss is another kind of rose-tangle, from which a nourishing jelly is made.
1909 R. G. Hatton vi. 43 Thallogens..are the Sea-weeds, Rose-tangles, Fungi and Lichens.