Kalanchoe subg. Calophygia Descoings (2006: 24) emend. Smith (2023e: 118)

Smith, Gideon F., 2024, An alternative subgeneric classification of Kalanchoe (Crassulaceae subfam. Cotyledonoideae) globally: a nomenclatural and taxonomic review, with a new status for K. subg. Pubescentes, Phytotaxa 665 (3), pp. 201-220 : 209

publication ID

https://doi.org/10.11646/phytotaxa.665.3.3

DOI

https://doi.org/10.5281/zenodo.16320733

persistent identifier

https://treatment.plazi.org/id/03D1878C-FFCE-FFB0-FF0E-DBF2FC7B3A93

treatment provided by

Felipe

scientific name

Kalanchoe subg. Calophygia Descoings (2006: 24) emend. Smith (2023e: 118)
status

 

B.3 Kalanchoe subg. Calophygia Descoings (2006: 24) emend. Smith (2023e: 118) ( Fig. 6 View FIGURE 6 ).

Type:— Kalanchoe arborescens Humbert (1933: 163) , designated by Descoings (2006: 24).

Designation not validly published:—“ Kalanchoe [infragen. unranked, as “§”] Lanigerae ” Boiteau (1947: 9), nom. inval. ( Turland et al. 2018: Art 39.1). See Boiteau & Allorge-Boiteau (1995: 16 [page unnumbered], 138–172, as Groupe X) and Allorge-Boiteau (1995, 1996: 141).

Description:—Perennial, woody, generally multi-branched, low-growing, pseudo-rosulate to shrubby or arborescent, terrestrial succulents, stoloniferous in one instance; virtually all external surfaces variously covered by tomentum consisting of glandular or stellate hairs or minute scales. Roots fibrous or substantially thickened, then woody, plants often sprouting from roots. Stems brittle- to very hard-woody. Leaves generally not bulbiliferous, but new plants develop from severed leaves or leaf fragments under ambient growing conditions. Inflorescences terminal or, rarely, lateral, bulbils sometimes develop on inflorescences post-anthesis. Flowers multi-directional to rarely erect at anthesis, brightly or dull-coloured; calyx tube small or prominent, sometimes distinctly succulent, often persistent on desiccated flowers for a long time; corolla variously flimsy or succulent; corolla tube as long as or longer than corolla lobes, often exceeding free sepal segments in length; corolla lobes generally slightly to distinctly recurved; stamens usually inserted in middle of corolla tube or higher up; filaments often short, thin; anthers included or well-exserted; nectar scales generally wider than long. Chromosome number (basic): x = 18.

Kalanchoe subg. Calophygia is naturally endemic to Madagascar ( Descoings 2007). However, K. beharensis Drake del Castillo (1903: 41) has a tendency to become naturalised in places well away from its natural distribution range in southern Madagascar (see for example Raymond-Hamet 1941: 489, Conte 2004: 40, 67, Smith et al. 2019: 247 and map under Fig. 12.18.2, and Smith et al. 2021b: 55). The only known stoloniferous kalanchoe, K. synsepala Baker (1882: 110) , is included in K. subg. Calophygia.

The taxonomy of the subgenus was reviewed in Smith (2023e).

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