Smith, G.F. 2023. Kalanchoe deliae (K. [subg. Kalanchoe] sect. Raveta; Crassulaceae subfam. Kalanchooideae), a new species from the Barberton Centre of Endemism in northeastern southern Africa. Phytotaxa. 632, 2 (Dec. 2023), 131–142. DOI:https://doi.org/10.11646/phytotaxa.632.2.3.