Conferva daviesii Dillwyn, 1809 [1802–1809]: 73, pl. F (lectotype locality: probably north Wales fide Dixon & L. Irvine, 1977b: 90).
Acrochaetium daviesii (Dillwyn) Nägeli, 1862: 405, 412.
Audouinella daviesii (Dillwyn) Woelkerling, 1971: 28–30, figs. 7, 22.—Huisman et al., 1990: 93.— Huisman & Walker, 1990: 396.— Kendrick, Huisman, & Walker, 1990: 50.— Woelkerling & Womersley, 1994: 50–52, fig. 9G.
Colaconema daviesii (Dillwyn) Stegenga, 1985c: 317, 320, fig. 20.—Bolton & Stegenga, 1987: 174.— Bolton & Stegenga, 1990: 237.
Taxonomic synonym (fide Woelkerling, l.c.):
* Callithamnion radicans Harvey, 1855b: 563 (type locality: Fremantle, Western Australia).—Harvey, 1863: lvi.— J. Agardh, 1876: 9.— Sonder, 1880: 11.— De Toni, 1903: 1342.
Chantransia radicans (Harvey) De Toni, 1897: 71–72.—Lucas, 1909: 21.— De Toni, 1924: 73.
Acrochaetium radicans (Harvey) G. Hamel, 1927: 4.—Papenfuss, 1945: 319.— Levring, 1953: 477, figs. 10E–G.— V. May, 1965: 364.
Misapplied name (fide Woelkerling, l.c.):
Callithamnion sparsum.—Harvey, 1855b: 563.— Harvey, 1863: lv.— Sonder, 1880: 11.
INDIAN OCEAN DISTRIBUTION: Australia, South Africa.