Mesembryanthemum tetragonum Thunb., Prodr. Fl. Cap. 2: 91. 1800
Mesembryanthemum tetragonum, Prodr. Fl. Cap. 2: 91. 1800
is basionym for Aridaria tetragona in Fl. Pl. South Africa 7: t. 258. 1927
is basionym for Sphalmanthus tetragonus in Jacobsen, Sukkulent. Lex.: 514. 1970
is basionym for Prenia tetragona in Bot. Jahrb. Syst. 118: 36. 1996
is basionym for Peratetracoilanthus tetragonus in Lav. Ist. Bot. Giard. Colon. Palermo 16: 23, 32. 1960
is basionym for Nycteranthus tetragonus in Kakteen And. Sukk. 3: 51. 1952
Mesembryanthemum tetragonum, Prodr. Fl. Cap. 2: 91. 1800