Smith, G.F. 2023. Kalanchoe sect. Streptanthae (Crassulaceae subfam. Kalanchooideae), a new two-species section in K. subg. Bryophyllum. Phytotaxa. 609, 4 (Aug. 2023), 273–281. DOI:https://doi.org/10.11646/phytotaxa.609.4.3.