Sargassum echinocarpum J. Agardh, 1848b: 327 (type locality: Hawaiian Islands).—Reinbold in Weber-van Bosse, 1913a: 155.
Misapplied name (fide Sonder, 1871: 43):
Carpacanthus spinulosus.—G. Martens, 1868: 27, 78–79.
INDIAN OCEAN DISTRIBUTION: Indonesia (Sumatra and Timor), Singapore.