Kalanchoe sect. Raveta Smith (2022a: 210)

Smith, Gideon F., 2023, A review of the infrageneric classifications proposed for Kalanchoe (Crassulaceae subfam. Kalanchooideae) from the earliest times up to 2000, Phytotaxa 619 (1), pp. 1-38 : 14

Kalanchoe sect. Raveta Smith (2022a: 210) .

For the nomenclatural treatment of K. [unranked] Transvaalensis, i.e., of K. sect. Raveta, see ‘4. The infrageneric classification of Kalanchoe of Raymond-Hamet (1916a) ’, above.

7. The infrageneric classification of Kalanchoe by Raymond-Hamet (1933)

Smith (2023a) provided an analysis of the limited classification system proposed for Kalanchoe by Raymond-Hamet (1933). Only a summary is given here.

Raymond-Hamet (1933: 542–548) comprehensively discussed the taxonomy of K. porphyrocalyx and K. uniflora ( Stapf 1908: 258) Hamet (1910b: 52) (see also Stapf 1909), names published for two Malagasy species that both have basionyms in the genus Kitchingia (see Baker 1883: 142 on Kitchingia porphyrocalyx and Stapf 1908: 258, 1909: t. 8286 on K. uniflora ). Earlier, Hamet (1907a: 877) doubtfully included Kalanchoe porphyrocalyx in his unnamed “Groupe 1” (see Footnote 1 to Table 4 , above).

Raymond-Hamet (1933: 547) proposed, but did not validly publish, the designation “ Kalanchoe / Bryophyllum / Kitchingia sect. Alatae ” for Kalanchoe porphyrocalyx and K. uniflora because he did not definitely associate the final epithet— Alatae —with the name of a genus, or with its abbreviation ( Turland et al. 2018: Art. 35.2). This two-species group, for which the designation “ Kalanchoe / Bryophyllum / Kitchingia sect. Alatae ” was intended, was characterised as follows (Raymond-Hamet 1933: 547, translated from the original French): “Plants glabrous or basally covered with simple hairs, with leaves subentire or more or less crenulate. Calyx with segments longer than the [calyx] tube. Corolla with segments shorter than the [corolla] tube, more or less ovate. Stamens inserted below the middle of the corolla tube. Carpels connate, attenuate into styles a little longer or a little shorter than the carpels. Scales sublinear or elongated-oval-sublinear. Seeds winged.”

This was the second abortive attempt by Raymond-Hamet to publish a name at the rank of section in Kalanchoe — the first was 17 years earlier when he did not validly publish “[ Kalanchoe / Cotyledon ] sect. Raveta ” (Raymond-Hamet 1916a: 83–84) (see ‘4. The infrageneric classification of Kalanchoe of Raymond-Hamet (1916a) ’, above).

At the rank of section, K. sect. Alatae Smith (2021a: 179) was validly published as the name of a new taxon, and this serves as the basionym of K. subg. Alatae (Gideon F.Sm.) Smith (2023a: 64), with this group therefore preferentially treated at the rank of subgenus, including in this study. Interestingly, Raymond-Hamet & Marnier-Lapostolle (1964: 93 [page not numbered]) referred to “ K. sect. Alatae ”, the earlier non-valid designation published by Raymond-Hamet (1933: 547) as “Groupe Alatae ” only.

The nomenclature of K. sect. Alatae resolves as follows: