Sphacelaria tribuloides Meneghini, 1840: [2] (lectotype locality: La Spezia, Italy fide Prud'homme van Reine, 1982: 179).—Kützing, 1849: 464.— G. Martens, 1868: 68–69.— Dickie, 1874b: 191.— Reinke, 1890: 207.— Reinke, 1891: 8–9.— Barton, 1893: 110.— Möbius, 1893: 137.— De Toni, 1895b: 502–503.— Reinbold, 1895a: 25.— De Wildeman, 1897a: 165.— De Wildeman, 1900: 390–391.— Sauvageau, 1901: 233–242, figs. 28–30.— Sauvageau, 1903 [1903–1914]: 123–132, figs. 28–30.— Reinbold, 1907: 565.— Delf & Michell, 1921: 97.— Børgesen, 1934b: 26–27.— Børgesen, 1938b: 209.— Børgesen, 1941: 41–42, fig. 18.— Newton, 1953: 397, 405.— Varma, 1959: 249.— K. Srinivasan, 1960c: 458.— Varma, 1961: 224.— Umamaheswara Rao & Sreeramulu, 1964: 599.— S. Dixit, 1966: 7.— Misra, 1966b: 127–129, fig. 64.— Misra, 1967: 233.— Womersley, 1967: 201.— Jaasund, 1969: 262–263, fig. 9.— Umamaheswara Rao, 1969d: 41.— V. Krishnamurthy & H. Joshi, 1970: 10.— Umamaheswara Rao & Sreeramulu, 1970a: 31, fig. 19.— Islam, 1974b: 86.— Subbaramaiah, 1974: 59.— Sartoni, 1975: 289.— Islam, 1976: 35, pl. 25: figs. 169–171; pl. 37: figs. 232, 233.— Jaasund, 1976: 37, fig. 76.— Basson et al., 1977: 258.— Hackett, 1977: 28.— Jaasund, 1977d: 515.— Chauhan & Mairh, 1978: 34.— Basson, 1979: 55, pl. IV: fig. 19.— V. Krishnamurthy, 1980: 52.— Lawson, 1980: 30.— Allender, 1981: 22.— Russell, 1981: 467.— Untawale, Dhargalkar, & Agadi, 1983: [18].— Chennubhotla, Kaliaperumal, & Kalimuthu, 1987a: 102–103.— Womersley, 1987: 160, 162.— Kendrick, Walker, & McComb, 1988: 205, table 1.— Al-Hasan & W. Jones, 1989: 296–297, pl. 4: fig. 33.— Basson, Mohamed, & Arora, 1989: 31.— Huisman et al., 1990: 92.— Huisman & Walker, 1990: 373.— Kendrick, Huisman, & Walker, 1990: 49.— V. Krishnamurthy & Balasundaram, 1990: 8.— V. Krishnamurthy et al., 1990: fig. 4.— Anilkumar & Panikkar, 1992: 133, figs. 10–17.— Basson, 1992: 220.— Coppejans, Beeckman, & De Wit, 1992: 64.— Kalimuthu, Kaliaperumal, & Ramalingam, 1992: 122.— Kalugina-Gutnik, Perestenko, & Titlyanova, 1992: 22 (table 1).— Titlyanova, Perestenko, & Kalugina-Gutnik, 1992: 44.
Taxonomic synonym:
* Sphacelaria rigida Hering in Krauss, 1846: 213 (type locality: Natal Bay [Durban], South Africa).—Kützing, 1849: 465–466.— Areschoug, 1851: 19.— Dickie, 1877b: 6.— Piccone, 1889a: 22.— Børgesen, 1941: 42–44, fig. 19.
Misapplied name (fide G. Martens, 1868: 68):
Sphacelaria cervicornis.—Montagne, 1845: 38.
INDIAN OCEAN DISTRIBUTION: Australia, Bahrain, Bangladesh, Chagos Archipelago (Egmont Atoll), India, Indonesia (Sunda Strait and Sumatra), Kenya, Kuwait, Maldives, Mauritius, Oman (south of Kuria Muria Islands), Rodriguez Island, Saudi Arabia, Seychelles, Singapore, South Africa, Tanzania.
Note: The synonymy was proposed by Prud'homme van Reine (1982: 179).