Amphiroa cultrata Harvey, 1849 [1847–1849]: 102, pl. XXXIX (in part) (lectotype locality: Port Natal [Durban], South Africa fide Johansen, 1977: 175).—Kützing, 1858: 26–27, pl. 54: figs. a–i.
Cheilosporum cultratum (Harvey) Areschoug, 1852: 545–546.—Areschoug, 1856: no. 70.— Dickie, 1874b: 193.— Bornet, 1885: 19.— G. Murray, 1887: 33.— Barton, 1893: 203.— Hariot, 1902: 472.— De Toni, 1905: 1831.— Delf & Michell, 1921: 119.— Stephenson, Stephenson, & du Toit, 1937: 355, 373.— Eyre, Broekhuysen, & Crichton, 1938: 107.— Eyre & Stephenson, 1938: 32.— Stephenson, 1939: 534.— Manza, 1940: 293–294.— Stephenson, 1947: 301.— Isaac, 1957b: 93, figs. 12, 13.— Isaac & Chamberlain, 1958: 148.— Pocock, 1958: 26.— Seagrief, 1967: 136, pl. [59].— Simons, 1969: 253, fig. (s.n.).— S. Dixit, 1970: 118.— Jackson, 1976: 15, 18, 20, 33.— Johansen, 1977: 175–176, figs. 1–4, 6–17, 23, 27 (subsp. cultratum).— Simons, 1977: 31, fig. 75.— Brown & Jarman, 1978: 1253, 1254, 1258, 1259.— Beckley, 1979: 171.— Beckley & McLachlan, 1979: 179, figs. 6, 7.— Beckley & McLachlan, 1980: 173, tables 2, 3.— Joubert & Hanekom, 1980: appendices 1, 3.— Seagrief, 1980: 25, fig. on pl. 7.— Bolton, 1986: 254.— Lambert & Steinke, 1986a: 54.— Lambert & Steinke, 1986b: 203, 211, 215.— Bolton & Stegenga, 1987: 173.— Seagrief, 1988: 37, 52, fig. 5:8.— Stegenga, 1988: 381, 383.— R. Anderson & Stegenga, 1989: 302.— Bolton & Stegenga, 1990: 237.— Farrell, Critchley, & Aken, 1993: 152.— Branch et al., 1994: 338, pl. 161.8d.
Possible taxonomic synonym:
Amphiroa cultrata Harvey var. globulifera Kützing, 1858: 27, pl. 55: fig. I (type locality: Port Natal [Durban], South Africa).—G. Martens, 1868: 29, 86–87.— De Wildeman, 1897a: 180.
INDIAN OCEAN DISTRIBUTION: Indonesia (Sumatra), Madagascar, Mauritius, Mozambique, South Africa, Sri Lanka.
Note: According to Yendo (1905: 19), Amphiroa cultrata var. globulifera "is the name given to a plant having the conceptacles of Choreonema''. This name, when lectotypified, will then be a synonym either of the host or of the parasite (Choreonema thuretii (Bornet) Schmitz (q.v.)).