Smith, G.F. 2023. The taxonomy and nomenclature of Kalanchoe ×kewensis [K. bentii × K. glaucescens] (Crassulaceae subfam. Kalanchooideae), a nothospecies produced at the Royal Botanic Gardens, Kew, in the early 1900s. Phytotaxa. 618, 3 (Oct. 2023), 274–282. DOI:https://doi.org/10.11646/phytotaxa.618.3.5.