Corallina flabellum Ellis & Solander, 1786: 124–125, pl. 24 (type locality: West Indies).
Udotea flabellum (Ellis & Solander) Howe, 1904: 94.—A. Gepp & E. Gepp, 1911: 131–133.— Børgesen, 1946: 42–43.— Durairatnam, 1961a: 25, pl. XX: fig. 2.— W.R. Taylor, 1966a: 353.— Isaac, 1967: 77.— Umamaheswara Rao, 1969d: 40.— S. Dixit, 1970: 110.— V. Krishnamurthy & H. Joshi, 1970: 8.— Umamaheswara Rao, 1970b: 367.— K. Srinivasan, 1973: 35, pl. XXXV.— Titlyanova & Butorin, 1978: 20.— Sartoni, 1979: 291–292.— S. Dixit, 1980: 62.— V. Krishnamurthy, 1980: 52.— Lawson, 1980: 16.— Untawale, Dhargalkar, & Agadi, 1983: [14].— V. Krishnamurthy & Balasundaram, 1990: 8.— Phang & Wee, 1991: 58.— Kalugina-Gutnik, Perestenko, & Titlyanova, 1992: 24 (table 1).— Titlyanova, Perestenko, & Kalugina-Gutnik, 1992: 45.
Udotea flabellata Lamouroux, 1816: 311–312, nom. illeg.—G. Murray, 1887: 39.— Barton, 1903b: 165.— Herdman, 1903: 110.
Misapplied name (fide V. Krishnamurthy & H. Joshi, 1970: 8):
Udotea indica.—Chacko, Mahadevan, & R. Ganesan, 1955: 11.
INDIAN OCEAN DISTRIBUTION: India, Kenya, Malaysia, Mauritius, Seychelles, Singapore, Somalia, Sri Lanka.
Note: In transferring Corallina flabellum to Udotea, Lamouroux changed the epithet unnecessarily.