Ruschia rigidicaulis (Haw.) Schwantes in Natl. Cact. Succ. J. 4: 58. 1949
Ruschia rigidicaulis in Natl. Cact. Succ. J. 4: 58. 1949
is new combination for Mesembryanthemum rigidicaule, Saxifrag. Enum. 2: 116. 1821
Ruschia rigidicaulis in Natl. Cact. Succ. J. 4: 58. 1949