[1]
G. F. Smith, D.-P. Klein, and R. Shtein, “A revision of the Malagasy Kalanchoe subg. Kitchingia (Crassulaceae subfam. Kalanchooideae): history, taxonomy, and nomenclature”, Phytotaxa, vol. 507, no. 1, pp. 67–80, Jun. 2021.