Sargassum hildebrandtii Grunow in Hauck, 1889 [1886–1889]: 188–189 (syntype localities: Lasgori [Laas Qoray] and "Scara'' [near Berbera], Somalia; Hodeida, Yemen).—De Toni, 1895b: 95.— Lawson, 1980: 27.
INDIAN OCEAN DISTRIBUTION: Somalia.