Kalanchoe sexangularis Brown (1913: 120)

Smith, Gideon F., 2023, A nomenclatural and taxonomic review of the names and new combination published between 1886 and 1931 in Kalanchoe (Crassulaceae subfam. Kalanchooideae) by British botanist Nicholas Edward Brown (1849 - 1934), Phytotaxa 630 (4), pp. 266-280 : 273-274

11. Kalanchoe sexangularis Brown (1913: 120) .

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 available at http://specimens.kew.org/herbarium/K000232850]!).

Taxonomic notes:— Kalanchoe sexangularis is an accepted species (see Figueiredo et al. 2016: 95, 97–99 and Smith et al. 2019: 226–232) ( Fig. 1G ). It is the most widely cultivated southern African species of Kalanchoe globally ( Figueiredo et al. 2016: 95, 97–99, Smith et al. 2019: 226–232, Smith 2020b).

Nomenclatural notes:—When describing K. sexangularis, Brown (1913: 120) stated: “ South Africa. Transvaal?

Described from a living plant sent by Mr Thorncroft to Cambridge Botanic Garden, and communicated to Kew by R.

I. Lynch.” The specimen George Thorncroft s.n. is the holotype of the name K. sexangularis . The nomenclature of K. sexangularis was comprehensively dealt with by Figueiredo et al. (2016: 95, 97–99).

Figures

FIGURE 1. A–B. Two Kew botanists appointed in the 1860s and 1870s, in sequence: A. John Gilbert Baker (1834–1920) and B. Nicholas Edward Brown (1849–1934). C–G. A selection of species described in Kalanchoe by N.E. Brown. Where necessary, the nomenclature reflects the currently accepted names of the taxa. C. Kalanchoe ×kewensis N.E.Br., non K. ×kewensis W.Watson, an illegitimate homonym (see text for a discussion). D. Kalanchoe lateritia is the accepted name of K. kirkii. E. Kalanchoe lanceolata is the accepted name of both K. diversa and K. ellacombei. F. Kalanchoe prasina is an accepted species. G. Kalanchoe sexangularis is an accepted species. H. Elise [Eliza] Keller (1869–1944), the wife of the botanist Alwin Berger (1871–1931), is commemorated in K. elizae, the currently accepted name of K. insignis. Kalanchoe elizae was the first name published in Kalanchoe to honour a woman. The name was published in January 1903 by Berger, four months before he and Keller got married. The photograph reproduced here was taken in 1935 while Elise was visiting her son, Fritz, in Pasadena, U.S.A. Photograph credits: A. Photographer unknown. Public Domain. http://www.plantillustrations. org/illustration.php?id_illustration=176522. B. Photographer unknown. Public Domain. https://en.wikipedia.org/wiki/N._E._Brown#/ media/File:NEBrown04.jpg. C–G. All photographs taken by Gideon F. Smith. H. Photographer unknown; © of and reproduced with the permission, through Lutz Schmalfuss, of the Alwin-Berger-Archivs, Bürgerverein Möschlitz e.V., Germany.