Kalanchoe sexangularis Brown (1913: 120)

Gallo, Lorenzo & Smith, Gideon F., 2024, A review of the genus Kalanchoe (Crassulaceae subfam. Cotyledonoideae) in the Euro-Mediterranean area, with an annotated catalogue and identification key, Phytotaxa 674 (2), pp. 171-198 : 185-186

12. Kalanchoe sexangularis Brown (1913: 120) ( Fig. 11 ).

Type:—[ SOUTH AFRICA]. Mpumalanga province, from Barberton, 2531 (-CC), date on which material collected in South Africa unknown, specimen prepared on 26 February 1913, George Thorncroft s.n. (holotype K barcode K000232850! [Image of the specimen available for examination online at http://specimens.kew.org/herbarium/ K000232850]).

Iconography:— Tölken (1983: t. 1878), Smith et al. (2019), Figueiredo et al. (2016).

Secondary distribution:— Spain = Aymerich & Gustamante (2016: 96), Randall (2017). Tunisia = El Mokni & Saez (2019b).

Notes:— Figueiredo et al. (2016: 95, 97–99) and Smith (2023c: 273–274) comprehensively discussed the typification of the name K. sexangularis and aspects of the taxonomy of the species.

The name K. rubinea Tölken (1978: 90) is at present treated as a synonym of K. sexangularis (see for example Descoings 2003: 175, Guillot Ortiz et al. 2008: 71, Sanz Elorza et al. 2011, Figueiredo et al. 2016, and Smith et al. 2019).

Figures

FIGURE 11. Kalanchoe sexangularis is popular in cultivation primarily because of the intensely crimson red colour that the leaves take on when exposed to high levels of solar irradiation. (Photograph: Gideon F. Smith).