Fucus forsteri Mertens ex Turner, 1808–1809: 15–16, pl. 77 (lectotype locality: Australia: probably King George Sound, Western Australia fide Saito & Womersley, 1974: 824).
Laurencia forsteri (Mertens ex Turner) Greville, 1830: lii.—Sonder, 1848 [1846–1848]: 178 ("forma vera'').— Harvey, 1849 [1847–1849]: 85 (in part).— J. Agardh, 1852 [1851–1863]: 744 (in part).— Dickie, 1874b: 192.— J. Agardh, 1876: 645–646 (in part).— Sonder, 1880: 29.— De Toni, 1903: 779–780 (in part).— Lucas, 1909: 38 (in part).— Yamada, 1931b: 213 (excluding pl. 13a).— Saito & Womersley, 1974: 823–825, figs. 1E, 8.— Huisman & Walker, 1990: 437.
INDIAN OCEAN DISTRIBUTION: Australia, Mauritius.
Note: Saito & Womersley (1974: 824) pointed out that Laurencia forsteri and L. filiformis (C. Agardh) Montagne have long been confused.