Myrionema orbiculare J. Agardh, 1848b: 48 (type locality: Mediterranean Sea).
Ascocyclus orbicularis (J. Agardh) Kjellman, 1890: 80.—Misra, 1966b: 99–100, fig. 49.— Misra, 1967: 233.— V. Krishnamurthy & H. Joshi, 1970: 11.— S. Dixit, 1980: 66.— Untawale, Dhargalkar, & Agadi, 1983: [19].
INDIAN OCEAN DISTRIBUTION: India.
Note: The combining author of the binomial Ascocyclus orbicularis is usually cited as Magnus (1874: 73), but that author merely made a taxonomic statement. The author who first used the binomial seems to be Kjellman.