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Smith, G.F. 2026. Kalanchoe sect. Socotranae (Crassulaceae [subfam. Cotyledonoideae] tr. Kalanchoeae) circumscribed in the autonymic Kalanchoe subg. Kalanchoe. Phytotaxa. 755, 1 (May 2026), 73–84. DOI:https://doi.org/10.11646/phytotaxa.755.1.4.