Sargassum echinocarpum Greville, 1848 [1848–1849]: 274–275, pl. V: upper figs. 1–7, nom. illeg. (type locality: "in mari Indico'' [probably India]).—Greville, 1850: 87–88, pl. VII: upper figs. 1–7.
Sargassum cinctum J. Agardh var. echinocarpum Grunow in Askenasy, 1888: 28 (`echinocarpa').
Sargassum coriifolium J. Agardh var. echinocarpum (Grunow) Grunow, 1915 [1915–1916]: 436 (`echinocarpa').—K. Srinivasan, 1965: 243.— K. Srinivasan, 1967: 138–139, fig. 16.— V. Krishnamurthy & H. Joshi, 1970: 14.
Sargassum odontocarpum Sonder, 1871: 43.
Sargassum coriifolium J. Agardh, 1889: 96–97, nom. illeg.—De Toni, 1895b: 66.— Grunow, 1915 [1915–1916]: 435–436.— Biswas & Sharma, 1950: 91.— K. Srinivasan, 1967: 138.— S. Dixit, 1968: 18.— V. Krishnamurthy & H. Joshi, 1970: 14.— Untawale, Dhargalkar, & Agadi, 1983: [22].
INDIAN OCEAN DISTRIBUTION: India, Singapore, Sri Lanka.
Note: See Note to Sargassum odontocarpum var. lanceolatum.