Mesembryanthemum longum Haw., Observ. Mesembryanthemum 2: 177. 1795
Mesembryanthemum longum, Observ. Mesembryanthemum 2: 177. 1795
is basionym for Glottiphyllum longum in Gard. Chron., ser. 3, 71: 9. 1922
is basionym for Mesembryanthemum linguiforme subsp. longum, Syn. Pl. 2: 41. 1806
is basionym for Mesembryanthemum linguaeforme var. longum, Mesembr. Portulac.: 240. 1908
is basionym for Glottiphyllum longum var. longum