Dictyota polyclada Sonder ex Kützing, 1859: 10, pl. 23: fig. II (type locality: Western Australia).—Sonder, 1880: 8.— De Toni, 1895b: 280.— Lucas, 1909: 16.
Pachydictyon polycladum (Sonder ex Kützing) Womersley, 1967: 216 (`polyclada').—Womersley, 1987: 211.— Huisman & Walker, 1990: 377.
Taxonomic synonym (fide Womersley, 1967: 216):
Pachydictyon furcellatum J. Agardh, 1894a: 83–84 (syntype localities: western and southern Australia).
Misapplied name (fide Womersley, 1967: 216):
Dictyota furcellata.—Harvey, 1855b: 536.— Harvey, 1858b: pl. XXXVIII.— Harvey, 1863: xii.— J. Agardh, 1882: 102.
INDIAN OCEAN DISTRIBUTION: Australia.