Halimeda copiosa Goreau & Graham, 1967: 432–441, figs. 1–10 (type locality: Jamaica).—Colinvaux, 1969: 88.— Hackett, 1977: 26.— Farghaly, 1980: 96.— Hillis-Colinvaux, 1980: 118–120.— Coppejans & Prud'homme van Reine, 1992a: 175.— Kalugina-Gutnik, Perestenko, & Titlyanova, 1992: 24 (table 1).— Titlyanova, Perestenko, & Kalugina-Gutnik, 1992: 45.
Taxonomic synonym:
Halimeda opuntia (Linnaeus) Lamouroux forma hederacea Barton, 1901: 21, pl. III: fig. 23 (lectotype locality: Tanah-Djampeah, Flores Sea, Indonesia fide Colinvaux, 1968: 32).
Halimeda hederacea (Barton) Colinvaux, 1968: 30, 32, fig. 3, figs. 6:1, 6:4–8 (including Indian Ocean records).
INDIAN OCEAN DISTRIBUTION: Aldabra Islands, Indonesia (Sumba), Madagascar, Maldives, Seychelles.
Note: The synonymy was proposed by Colinvaux (1969: 88).