Fucus tridens Mertens ex Turner, 1811–1819: 142–143, pl. 255 (type locality: "New Holland'' [Western Australia fide C. Agardh, 1822 [1822–1823]: 373]).
Rhodomela tridens (Mertens ex Turner) C. Agardh, 1822 [1822–1823]: 373.—C. Agardh, 1824: 197.
Dictyomenia tridens (Mertens ex Turner) Greville, 1830: li.—Kützing, 1849: 848.— Harvey, 1855b: 538.— J. Agardh, 1863 [1851–1863]: 1081–1082.— Harvey, 1863: xviii.— Kützing, 1864: 33, pl. 94: figs. f, g.— Sonder, 1880: 33.— J. Agardh, 1897: 60.— De Toni, 1903: 985–986.— Lucas, 1909: 42.— De Toni & Forti, 1923: 43.— Lucas & Perrin, 1947: 281–282, fig. 128.— V. May, 1965: 396.— Huisman & Walker, 1990: 434 (`Dictymenia').
INDIAN OCEAN DISTRIBUTION: Australia.