Lithophyllum mauritianum Foslie, 1907a: 32–33 (type locality: Mauritius).—Adey, 1970: 5.— Woelkerling, 1993: 46.
Melobesia mauritiana (Foslie) Foslie, 1908b: 5–6.—Lemoine, 1918: 89.— De Toni, 1924: 652–653.— Jadin, 1935: 171.— Børgesen, 1943: 17.— Baissac, Lubet, & Michel, 1962: 269.— Adey & Lebednik, 1967: 36.
Heteroderma mauritianum (Foslie) Foslie, 1909: 56.
Pneophyllum mauritianum (Foslie) P. Silva.
INDIAN OCEAN DISTRIBUTION: Comoro Islands, Mauritius.
Note: Heteroderma Foslie (1909: 56) was lectotypified by Setchell & Mason (1943b: 96) with H. subtilissimum (Foslie) Foslie (Melobesia subtilissima Foslie, 1904a: 55; type locality: "Atjatuning'' [Atiationin, near Fakfak, west coast of Irian Jaya, Indonesia]), a species not reported from the Indian Ocean. Having found that the type specimen of the lectotype species was referable to an unspecified species of Pneophyllum Kützing (1843b: 385), Chamberlain (1983: 312, 353) treated the two generic names as taxonomic synonyms.