Fucus retroflexus Labillardière, 1807 [1806–1807]: 113–114, pl. 260 (type locality: "ad capitis Van-Diemen'' [Storm Bay, Tasmania fide Ducker, 1979b: 20]).
Cystoseira retroflexa (Labillardière) C. Agardh, 1820a: 74.—Sonder, 1846 [1846–1848]: 160.
Cystophora retroflexa (Labillardière) J. Agardh, 1848b: 242–243.—Sonder, 1880: 4.— Lucas, 1909: 12.— Hodgkin, 1959: 9.— Womersley, 1964: 89–91, figs. 31, 32, pl. 10: fig. 2.— Womersley, 1987: 396, 398.
INDIAN OCEAN DISTRIBUTION: Australia.