Ceramium australe Sonder, 1845: 52 (type locality: Western Australia [probably near Perth fide Womersley, 1978: 230]).—Sonder, 1848 [1846–1848]: 167.— J. Agardh, 1851 [1851–1863]: 124–125.— Harvey, 1855b: 557.— Harvey, 1863: xlviii.— J. Agardh, 1876: 93.— Sonder, 1880: 12.— J. Agardh, 1894b: 16.— De Toni, 1903: 1449.— Lucas, 1909: 53.— Womersley, 1978: 230–231, figs. 3B,C, 13A–D.— Kendrick, Walker, & McComb, 1988: table 1.— Huisman et al., 1990: 96.— Kendrick, Huisman, & Walker, 1990: 51.
Gongroceras australe (Sonder) Kützing, 1849: 679.
Episperma australis (Sonder) Kuntze, 1891: 893.
Apona australis (Sonder) Kuntze, 1898: 395.
INDIAN OCEAN DISTRIBUTION: Australia.