Kalanchoe lateritia Engler (1894: 19)

Smith, Gideon F., 2025, A review and analysis of names and designations published for species and varieties of Kalanchoe (Crassulaceae subfam. Cotyledonoideae) by Adolf Engler (1844 - 1930) between 1892 and 1913, Phytotaxa 682 (1), pp. 1-28 : 10-11

2. Kalanchoe lateritia Engler (1894: 19) [again validly published by Engler (1895: 189)]. ( Fig. 6 ).

Type:— TANZANIA. Doda bei Tanga [Tanga District], “Blütenfarbe ziegelroth” [flower colour brick red], 28 June 1893, C.H.E.W. Holst 2986 (lectotype, Herb. B barcode B 10 0153767! [Image of the specimen available for examination online at https://herbarium.bgbm.org/object/B100153767]), lectotype designated by Raadts (1977: 131).

Isolectotype:—“OSTAFRIKA” [EAST AFRICA]. Tanzania, Doda bei Tanga [Tanga District], [28 June 1893], C.H.E.W. Holst 2986 (isolectotype, Herb. P barcode P03244993! [Image of the specimen available for examination online at http://coldb.mnhn.fr/catalognumber/mnhn/p/p03244993]).

Nomenclatural notes:—Where the name K. lateritia was first validly published, Engler (1894: 19) did not cite any material; the name therefore does not have a holotype. However, the collecting dates of the material cited by Engler (1895: 189) when he validly published the name K. lateritia for the second time, predate Engler (1894: 19), where the name was first validly published, and the material was clearly available to Engler. The specimens cited in Engler (1895: 189) therefore qualify as original material under Turland et al. (2018: Articles 9.3 and 9.4). Raadts (1977: 131) lectotypified the name K. lateritia on C.H.E.W. Holst 2986, a Herb. B-held specimen cited by Engler (1895: 189), where he validly published the name for the second time.

Taxonomic notes:—The name K. lateritia is in use for a variable, accepted species with a wide natural geographical distribution range in tropical and subtropical Africa. At present it is not known from the Flora of Southern Africa region, i.e., from Namibia, Botswana, Eswatini, Lesotho, and South Africa. It is one of the parents of the nothospecies K. × sogae Smith & Figueiredo (2022: 99) .

Biographical notes:— Polhill & Polhill (2015: 199–200) provide a comprehensive biographical treatment of Carl Hugo Ehrenfried Wilhelm Holst (Flensburg, Germany, 19 August 1865 – May 1894, Dar es Salaam, Tanzania), including of his itineraries and collecting activities in East Africa. Polhill & Pollhill (2015: 199) inter alia record that the extensive collections that Holst made in the Usambaras formed the basis of Engler (1894), i.e., Engler’s account of the vegetation of the Usambara Mountains.

Figures

FIGURE 6. Kalanchoe lateritia has a wide natural geographical distribution range in tropical and subtropical Africa. Photographer: Gideon F. Smith.