Smith, G.F., Shtein, R. and Klein, D.-P. 2021.

Kalanchoe subg. Alatae (Crassulaceae subfam. Kalanchooideae), a new rank for K. sect. Alatae

. Phytotaxa. 509, 2 (Jun. 2021), 255–258. DOI:https://doi.org/10.11646/phytotaxa.509.2.9.