Fucus decurrens R. Brown ex Turner, 1809–1811: 142–143, pl. 194 (type locality: northern Australia).
Sargassum decurrens (R. Brown ex Turner) C. Agardh, 1820a: 42.—Harvey, 1860b: pl. CXLV.— Harvey, 1863: v.— J. Agardh, 1873: 53–54.— Sonder, 1880: 1.— J. Agardh, 1889: 47, pl. XV: figs. 6, 7.— De Toni, 1895b: 13.— Lucas, 1909: 10.— Grunow, 1915 [1915–1916]: 334.— De Toni & Forti, 1923: 64–65.— Womersley, 1954b: 343–344, pl. 2: fig. 1.— Newton, 1955b: 142.— Womersley, 1987: 421.— Kendrick, Walker, & McComb, 1988: table 1.— Huisman et al., 1990: 93.— Huisman & Walker, 1990: 384.— Kendrick, Huisman, & Walker, 1990: 50.— Basson, 1992: 222.— Kendrick, 1993: 460.— Wells & Walker, 1993: 8.— Kendrick, 1994: 130.
Probable misapplied name (fide Womersley, 1987: 422):
Sargassum heteromorphum.—Basson et al., 1977: 193.— Basson, 1979: 60, pl. VII: fig. 33.— Al-Hasan & W. Jones, 1989: 299, pl. 6: fig. 47.— Basson, Mohamed, & Arora, 1989: 32, fig. 8.— Kureishy, 1991: table 1.— Basson, 1992: 222.
INDIAN OCEAN DISTRIBUTION: Australia, Bahrain, Kuwait, Qatar, Saudi Arabia.