G. F. Smith, “Publication of Kalanchoe sect. Trichanthae (Crassulaceae subfam. Kalanchooideae), a new status for K. [infragen. unranked] Trichanthae of Alwin Berger (930), in K. subg. Calophygia (2006 as amended in 2023)”, Phytotaxa, vol. 616, no. 2, pp. 176–182, Sep. 2023.