Mesembryanthemum ringens Linnaeus var. caninum Linnaeus, Species Plantarum 1: 487. 1753.

RCN: 3708.

Lectotype (Hartmann, Ill. Handb. Succ. Pl., Aizoaceae A–E: 102. 2001): [icon] " Mesembryanthemum rictum caninum referens" in Dillenius, Hort. Eltham. 2: 241, t. 188, f. 231. 1732.

Current name: Carruanthus ringens (L.) Boom ( Aizoaceae).

Note: This varietal epithet is associated with the typical part of the species (i.e. everything except var. felinum L. 1753) and, as such, is equivalent to the autonym with which it is therefore homotypic. See discussion by Boom (in Succulenta 11: 141-145. 1959) and Hartmann (Ill Handb. Succ. Pl., Aizoaceae A–E: 102. 2002).