Cladosiphon erythraeus J. Agardh, 1848b: 55 (`erythraeum') (type locality: Red Sea).—G. Murray, 1887: 37.
Nemacystus erythraeus (J. Agardh) Sauvageau, 1897: 279–284, fig. 6.—Børgesen, 1953: 16–17, pl. I.— S. Dixit, 1970: 113.
INDIAN OCEAN DISTRIBUTION: Mauritius, Sri Lanka.