Halothamnion harveyanum J. Agardh, 1876: 55 (type locality: Cape of Good Hope, South Africa).—Barton, 1896: 195.
Pleonosporium harveyanum (J. Agardh) De Toni, 1903: 1309.—Delf & Michell, 1921: 115.— Stephenson, 1944: 351.— Stephenson, 1947: 307.— Pocock, 1958: 27 (with query).— Seagrief, 1980: 27.— Lambert & Steinke, 1986a: 54.— Lambert & Steinke, 1986b: 211, 216.— Stegenga, 1986: 100–102, pls. 34, 35, 50B.— Seagrief, 1988: 64, fig. 5:14.— Bolton & Stegenga, 1990: 237.— Stegenga & Bolton, 1992: fig. 3, table I.
INDIAN OCEAN DISTRIBUTION: Mozambique?, South Africa.