Kalanchoe (Kalanchoe)
Creators: name: Smith, Gideon F.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Saxifragales
Crassulaceae
Kalanchoe

description: Kalanchoe subg. Kalanchoe
The autonymic Kalanchoe subg. Kalanchoe was automatically established on this date (Turland et al. 2018: Articles 6.8, 22.1, and 22.3).
6. The infrageneric classification of Kalanchoe, Bryophyllum, and Kitchingia of Alwin Berger (1930)
In a family-level treatment of the Crassulaceae, Berger (1930: 402–408, summary [“Schlüssel zu den Gruppen der Gattung Kalanchoe ”] on p. 404) published 10 named and numbered, but unranked groups in the genus Kalanchoe sensu stricto, i.e., K. subg. Kalanchoe sensu Smith & Figueiredo (2018a) (Table 5), one of which, “ K. unranked Crenatae ” Berger (1930: 404), was not validly published (Table 5, row 2 and further discussed below). The groups that Berger (1930) recognised corresponded approximately to Hamet’s groups (see Table 4). However, in contrast to the monographic work of Hamet (1907a, 1908a, b) in Kalanchoe, Berger (1930: 404–412) recognised Kalanchoe, Bryophyllum, and Kitchingia as three separate genera, a move that subsequently proved to be very influential, including in regional Floras produced for and in Africa, for example (see Smith & Figueiredo 2018a, Smith 2022g and Smith 2023b for discussions). However, Berger (1930) did not subdivide Bryophyllum and Kitchingia. Kitchingia, as interpreted by Berger (1930: 408), corresponds to Group 1 of Hamet (1907a: 877), while Bryophyllum sensu Berger (1930: 408–412) corresponds to Groups 5 and 9 of Hamet (1907a: 878).§ 4.TrichanthaeMadagascar (3) Groups 4 and 6K. synsepalaBaker (1882: 110);K. tetraphyllaPerrier de la Bâthie (1923: 452);K. trichanthaBaker (1883: 140) § 5.PubescentesMadagascar (1) Group 7K. pubescensBaker (1887: 470) § 6.LinearifoliaeMadagascar (5) Group 10K. bracteataScott Elliot (1891: 15);K. linearifoliaDrake del Castillo (1903: 41);K. nadyaeHamet (1907a: 892);K. grandidieriBaillon (1888: t. 57);K. orgyalisBaker (1882: 110) § 7.SocotranaeSocotra (2) Group 11K. abruptaBalfour filius (1882: 512);K. robustaBalfour filius (1882: 512) § 8.TransvaalensesSouth Africa (2) Group 14K. luciaeHamet (1908b: 256);K. thyrsifloraHarvey (1862: 380) § 9.IntegrifoliaeMadagascar (3) Group 2K. bitteriRaymond-Hamet & Perrier de la Bâthie (1914: 120);K. integrifoliaBaker (1887: 471);K. heckeliiRaymond-Hamet & Perrier de la Bâthie (1914: 117) § 10.PumilaeMadagascar (3) Group 3K. pumilaBaker (1883: 139);K. jongmansiiRaymond-Hamet & Perrier de la Bâthie (1914: 195);K. bergeriRaymond-Hamet & Perrier de la Bâthie (1914: 199)
Although Berger (1930) used the symbol “§” for his groups in Kalanchoe, this does not equate to the formal taxonomic rank of ‘section’, nor ‘subsection’, for that matter. In Kalanchoe sensu stricto, Berger (1930) treated 58 species. Smith (2020b) discussed the classification of Berger (1930) and, where necessary, typified the unranked names that Berger published.
Although Berger (1930: 408) separated Bryophyllum and Kitchingia from Kalanchoe (Table 6), the close relationship among the constituent species of these genera makes for very poor genus boundaries. For example, some of the species, such as K. porphyrocalyx, that Berger (1930) placed in Bryophyllum have since been variously included in K. subg. Kitchingia or in K. subg. Bryophyllum. Kalanchoe is here treated as including Bryophyllum and Kitchingia, both at the rank of subgenus.
1 See Smith et al. (2021d) for a revision of K. subg. Kitchingia.
2 See Smith & Figueiredo (2018b).
3 See Shtein & Smith (2021).
With one exception, “ Kalanchoe [unranked] Crenatae ” Berger (1930: 405), nom. inval., the unranked names that Berger (1930) published in Kalanchoe are validly published (Turland et al. 2018: Art. 37.3), but have no status in questions of priority, except for purposes of homonymy (Turland et al. 2018: Art. 53.3). Berger (1930) did not indicate types for his unranked infrageneric names. In two instances, lectotypes were designated by Smith (2020b; see below).
The 10 unranked names, additionally numbered as “§ 1.” to “§ 10.” by Berger (1930), with their types, are as follows:
description: Published as part of Smith, Gideon F., 2023, A review of the infrageneric classifications proposed for Kalanchoe (Crassulaceae subfam. Kalanchooideae) from the earliest times up to 2000, pp. 1-38 in Phytotaxa 619 (1) on pages 10-12, DOI: 10.11646/phytotaxa.619.1.1, http://zenodo.org/record/8425641