Sargassum ilicifolium (Turner) C. Agardh var. conduplicatum Grunow ex Reinbold in Weber-van Bosse, 1913a: 160 (`conduplicata') (lectotype locality: near Colombo, Sri Lanka fide Grunow, 1915 [1915–1916]: 406).—Grunow, 1915 [1915–1916]: 405–406.— Durairatnam, 1961a: 42–43, pl. X: figs. 9–11.
INDIAN OCEAN DISTRIBUTION: Indonesia (Flores), Sri Lanka.
Note: Grunow was pre-empted by Reinbold in publishing this variety. The specific localities cited by Reinbold are from the Siboga Expedition, but the type locality, according to Grunow, is Sri Lanka.