G. F. Smith, “A review and analysis of the nomenclatural and taxonomic status of the names and designations used and proposed, respectively, in Kalanchoe (Crassulaceae [subfam. Cotyledonoideae] tr. Kalanchoeae) by Raymond-Hamet (1890–1972) in the five Fascicles of his self-published Crassulacearum icones selectae that appeared between 1931 and 1963”, Phytotaxa, vol. 782, no. 1, pp. 1–28, Oct. 2026.