Smith, G. F.; Crouch, N. R.; Mckay, A. Reinstatement of Cotyledon ladysmithiensis, a South African Endemic Leaf Succulent in Crassulaceae [subfam. Cotyledonoideae] Tr. Cotyledoneae, With Notes on the Correct Orthography and Application of the Name. Phytotaxa 2026, 767, 207-224.