Halimeda fragilis W.R. Taylor, 1950: 88–89, 207, pl. 48: fig. 2 (type locality: Eniwetok Atoll, Marshall Islands).—Hillis, 1959: 363–364, pl. 5: fig. 10; pl. 6: fig. 1; pl. 7: fig. 1; pl. 8: fig. 1; pl. 9.— Farghaly, 1980: 96.— Hillis-Colinvaux, 1980: 151–152.— Wynne, 1993: 22.
Misapplied name (fide Hillis, 1959: 363):
Halimeda incrassata forma ovata.—A. Gepp & E. Gepp, 1908: 181 (in part; see also H. incrassata).— A. Gepp & E. Gepp, 1909: 391 (in part; see also H. incrassata).
INDIAN OCEAN DISTRIBUTION: Cargados Carajos, Madagascar, Maldives, Tanzania (Zanzibar).
Note: Tanzania (Zanzibar) is included in the distribution on the basis of specimens in UC collected by Papenfuss and Scagel and determined by Hillis-Colinvaux. In addition, specimens from Kenya and Mozambique have been referred to this species with a query.