Note: Carpothamnion Kützing (1849: 668) is a substitute name for Thamnocarpus Harvey (in W. Hooker, 1844: pl. DCLXII), a later homonym of Thamnocarpus Kützing (1843b: 450). The type of the latter name is T. cornutus (Turner) Kützing (l.c.), treated as Plocamium cornutum (Turner) Harvey (q.v.). Thamnocarpus Harvey was proposed for conservation by P. Silva (1950: 270), but the proposal was not accepted by the Committee for Algae.
Thamnocarpus gunnianus Harvey in W. Hooker, 1844: pl. DCLXII (type locality: Port Arthur, Tasmania).—Harvey, 1855b: 559.— Harvey, 1863: xlix.— J. Agardh, 1876: 82.— Sonder, 1880: 12.— De Toni, 1903: 1518–1519.— Lucas, 1909: 53.— Mazza, 1913 [1905–1918]: 21–22, 57–58.— De Toni, 1924: 530.— Lucas & Perrin, 1947: 370.— V. May, 1965: 368.— Huisman & Walker, 1990: 426.— Wollaston, 1992: 140.
Carpothamnion gunnianum (Harvey) Kützing, 1849: 668–669.
INDIAN OCEAN DISTRIBUTION: Australia.