The real identity of the Malagasy Kalanchoe rosei (Crassulaceae subfam. Kalanchooideae) finally resolved, and the description of a new species, K. perrieri Author Shtein, Ronen The Steinhardt Museum of Natural History, Tel Aviv University, Klausner St 12, Tel Aviv-Yafo, Israel. Author Smith, Gideon F. Department of Botany, Nelson Mandela University, P. O. Box 77000, Port Elizabeth, 6031 South Africa. Author Klein, David-Paul Albrecht Daniel Thaer-Institute of Agricultural and Horticultural Sciences, Humboldt University of Berlin, Albrecht-Thaer Weg 2, 14195 Berlin, Germany. text Phytotaxa 2021 2021-05-25 502 3 259 276 http://dx.doi.org/10.11646/phytotaxa.502.3.4 journal article 10.11646/phytotaxa.502.3.4 1179-3163 5425127 Kalanchoe bouvieri Hamet & Perrier de la Bâthie (1912: 366) Type :— MADAGASCAR . South-central Madagascar , “Cette espèce, dédiée à M . Bouvier, membre de l’Institut, professeur au Muséum d’Histoire Naturelle, a été récoltée, en juillet 1910 , par M . Perrier de la Bâthie, sur les rocailles des bords de l’Imaloto.” [English: “This species, dedicated to Mr. Bouvier , member of the Institute and professor at the Muséum d’Histoire Naturelle, was collected in July 1910 by Mr. Perrier de la Bâthie on rocks on the banks of the Imaloto [River].”], July 1910 , J . M . [ H . ] A . Perrier de la Bâthie 11799 ( lectotype P-P00444020!), here designated as lectotype .