Lithothamnion affine Foslie, 1897: 13–14 (lectotype locality: "Massanah, Red Sea'' [Massawa, Eritrea?] fide Woelkerling, 1993: 21).
Lithophyllum affine (Foslie) Foslie, 1898b: 9.—Reinbold, 1907: 579.
Lithophyllum kotschyanum Unger forma affine (Foslie) Foslie, 1909: 34 (`affinis').—Adey & Lebednik, 1967: 41 (without designation of forma).
INDIAN OCEAN DISTRIBUTION: Seychelles (Mahé Island).