Sarcomenia intermedia Grunow, 1867: 92–93, pl. XI: fig. 1 (syntype localities: St. Paul Island; Cape of Good Hope, South Africa).—Reichardt, 1871: 27.— Hemsley, 1884: 281.— Askenasy, 1888: 54.— J. Agardh, 1896: 122, 134.— De Toni, 1900: 736.
Platysiphonia intermedia (Grunow) Wynne, 1983: 446.—Kendrick, Walker, & McComb, 1988: 205, table 1.— Huisman et al., 1990: 96.— Kendrick, Huisman, & Walker, 1990: 51.
INDIAN OCEAN DISTRIBUTION: Australia, St. Paul Island.
Note: P. Silva & Cleary (1954: 251, 258, 259, fig. 26a) examined an isotype of Sarcomenia intermedia (from FH) and reported their results under the binomial Platysiphonia intermedia, but the intended combination was invalid since they did not give a full citation of the basionym and thus failed to satisfy Art. 33.2.