Trigenea australis Sonder, 1845: 54 (type locality: Western Australia).—Harvey, 1847 [1847–1849]: 37.— Sonder, 1848 [1846–1848]: 181–182.— Kützing, 1849: 841.— Harvey, 1855b: 538.— J. Agardh, 1863 [1851–1863]: 1248–1249.— Kützing, 1866: 20, pl. 57: figs. a–e.— Sonder, 1880: 33.— J. Agardh, 1890: 116.— J. Agardh, 1899: 122.— Falkenberg, 1901: 583.— De Toni, 1903: 1124–1125.— Lucas, 1909: 47.— Lucas & Perrin, 1947: 305.— V. May, 1965: 384.
Rhodomela trigenea Harvey, 1860b: pl. CXXVI.—Harvey, 1863: xviii.
INDIAN OCEAN DISTRIBUTION: Australia.