Kalanchoe subg. Alatae, Raymond-Hamet ex Smith, 2021

Smith, Gideon F., 2023, A reassessment of combinations previously proposed or published for Kalanchoe subg. Alatae (Crassulaceae subfam. Kalanchooideae), and its valid publication at the rank of subgenus, Phytotaxa 585 (1), pp. 61-66 : 64

Nomenclature of Kalanchoe subg. Alatae

Smith et al. (2021b: 255) indicated that the group consisting of the two species, Kalanchoe porphyrocalyx [including Kalanchoe porphyrocalyx var. sambiranensis Humbert ex Smith & Figueiredo (2019: 206) , apart from the autonymic Kalanchoe porphyrocalyx var. porphyrocalyx ] and Kalanchoe uniflora , included in Kalanchoe sect. Alatae by Smith (2021: 179), should preferentially be treated at the rank of subgenus, a view followed here. However, the basionym, “ Kalanchoe sect. Alatae ” Raymond-Hamet (1933: 547), on which Smith et al. (2021b: 255) based their “ Kalanchoe subg. Alatae ” Gideon F.Sm., Shtein & D.-P.Klein in Smith et al. (2021b: 255), was not validly published, and a basionym is, by definition, the legitimate [and therefore validly published], previously published name on which a new combination or name at new rank is based ( Turland et al. 2018: Articles 6.5 and 6.10). The combination “ Kalanchoe subg. Alatae ” was therefore not validly published by Smith et al. (2021b: 255).

Kalanchoe subg. Alatae , a new status, at the rank of subgenus therefore, is validly published here. It is not a new combination because Kalanchoe sect. Alatae had been published earlier by Smith (2021: 179) ( Turland et al. 2018: Art. 6.10 and its Note 5).