Fucus platycarpus Turner, 1809–1811: 23–24, pl. 144 (type locality: Cape of Good Hope, South Africa).
Delesseria platycarpa (Turner) Lamouroux, 1813: 124.—C. Agardh, 1822 [1822–1823]: 188–189.— C. Agardh, 1824: 252–253.
Botryoglossum platycarpum (Turner) Kützing, 1843b: 446 (including Indian Ocean record).—Kützing, 1849: 881.— J. Agardh, 1852 [1851–1863]: 676–677.— Hohenacker, 1862 [1852–1862]: no. 598.— Kützing, 1866: 2, pl. 4: figs. a–d.— De Toni, 1900: 677.
Phyllophora platycarpa (Turner) Greville ex Krauss, 1846: 210.
Nitophyllum platycarpum (Turner) J. Agardh, 1876: 470 (including Indian Ocean record).—Barton, 1893: 143.
Taxonomic synonym (fide J. Agardh, 1852 [1851–1863]: 676):
Delesseria alata (Turner) Lamouroux var. prolifera Suhr, 1840: 260–261.
INDIAN OCEAN DISTRIBUTION: South Africa.