Lithothamnion superpositum Foslie, 1900a: 8–9 (type locality: "Grahamstown'' [probably near Port Alfred, Cape Province], South Africa).—Foslie, 1929: 46, pl. XII: fig. 10.— Adey & Lebednik, 1967: 82.— Woelkerling, 1993: 218.
Mesophyllum superpositum (Foslie) Adey, 1970: 26.
INDIAN OCEAN DISTRIBUTION: South Africa.