Smith, G.F. 2024. Kalanchoe tomentosa (Crassulaceae subfam. Cotyledonoideae), a variable, shrubby, and completely tomentose species from Madagascar, with reference to its horticultural derivatives. Phytotaxa. 672, 2 (Nov. 2024), 127–148. DOI:https://doi.org/10.11646/phytotaxa.672.2.1.