Lithothamnion simulans (Foslie) Foslie forma crispescens Foslie, 1904a: 16–18, fig. 7, pl. I: figs. 21–23 (lectotype locality: northeast point of Timor, Indonesia fide Adey & Lebednik, 1967: 70; Verheij & Woelkerling, 1992: 278).—De Toni, 1924: 624 (as L. simulans).— Foslie, 1929: 45, pl. VIII: figs. 16, 17.— Adey & Lebednik, 1967: 70 (without designation of forma).— Woelkerling, 1993: 68.— Woelkerling & Verheij, 1995: 44–45.
Mesophyllum crispescens (Foslie) Lemoine in Børgesen, 1954a: 14–15.—Isaac, 1971: 17.— Lawson, 1980: 57.— Ballesteros & Afonso-Carrillo, 1995: 207, figs. 5–10.
INDIAN OCEAN DISTRIBUTION: Indonesia, Kenya, Mauritius.