Helminthora australis J. Agardh ex Levring, 1953: 497–500, figs. 27–30 (comprising formae "typica'', epiphytica, and pyramidalis) (including Indian Ocean record) (type locality: Western Port, Victoria, Australia).—V. May, 1965: 385.— Womersley, 1965b: 461–463, figs. 17–22, pl. 2: fig. 2; pl. 3: fig. 1.— Huisman & Walker, 1990: 397.— Womersley, 1994: 83.
Misapplied name (fide Levring l.c.):
Helminthora divaricata.—Harvey, 1855b: 552.— Harvey, 1863: xxxviii–xxxix.— Sonder, 1880: 24.
INDIAN OCEAN DISTRIBUTION: Australia.