Abstract
The hybrid between Kalanchoe lateritia and K. sexangularis (Crassulaceae subfam. Kalanchooideae) is described as K. ×sogae. Like K. lateritia, virtually all plant parts of K. ×sogae are covered in a fine indumentum, but with the indumentum being less substantial in the case of this nothospecies. The leaves and stems of material of K. ×sogae are bright red-infused, especially when growing in full sun. This hybrid shows considerable horticultural potential and is more resistant against phytophagous insects than K. sexangularis.
References
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2020e) Kalanchoe Adans. subg. Fernandesiae Gideon F.Sm. (Crassulaceae subfam. Kalanchooideae), a new subgenus from southern and south-tropical Africa. Haseltonia 27: 2–7. https://doi.org/10.2985/026.027.0101</span></span></span>
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2020g) Nomenclature of the partial infrageneric classification proposed for Kalanchoe (Crassulaceae subfam. Kalanchooideae) by René C.J.E. Maire in 1976. Phytotaxa 468 (2): 231–235. https://doi.org/10.11646/phytotaxa.468.2.8</span></span></span>
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2021b) Reinstatement of Kalanchoe [subg. Bryophyllum] sect. Alatae (Crassulaceae subfam. Kalanchooideae) for K. porphyrocalyx and K. uniflora, two Madagascan endemics. Bradleya 39: 177–181. https://doi.org/10.25223/brad.n39.2021.a17</span></span></span>
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2022b) A review of the ecology and natural history of Kalanchoe (Crassulaceae subfam. Kalanchooideae) in southern Africa. Bradleya 40: 161–184. https://doi.org/10.25223/brad.n40.2022.a15</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2022c) Notes on Kalanchoe subg. Bryophyllum (Crassulaceae subfam. Kalanchooideae) and the kalanchoes of Sijfert H. Koorders (1919). Phytotaxa 549 (1): 87–96. https://doi.org/10.11646/phytotaxa.549.1.7</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2022d) Identity of Kalanchoe ‘Fang’ and K. ‘Rose Leaf’, two cultivars derived from K. ×edwardii (Crassulaceae subfam. Kalanchooideae), with notes on aspects of interspecific hybridisation in the genus. Bradleya 40: 151–160. https://doi.org/10.25223/brad.n40.2022.a14</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Figueiredo, E. (2018) The infrageneric classification and nomenclature of Kalanchoe Adans. (Crassulaceae), with special reference to the southern African species. Bradleya 36: 162–172. https://doi.org/10.25223/brad.n36.2018.a10</span></span></span>
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Figueiredo, E. (2022a) Clarifying the typification of the name Kalanchoe orgyalis (Crassulaceae subfam. Kalanchooideae). Phytotaxa 543 (1): 99–102. https://doi.org/10.11646/phytotaxa.543.1.11</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Figueiredo, E. (2022b) Nomenclatural and taxonomic notes on the names published in Kalanchoe (Crassulaceae subfam. Kalanchooideae) by Drake del Castillo in 1903. Phytotaxa 547 (2): 158–166. https://doi.org/10.11646/phytotaxa.547.2.3</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Figueiredo, E. (2023a). Kalanchoe luciae. Crassulaceae subfam. Kalanchooideae. Southern and south-tropical Africa (South Africa, Swaziland, Mozambique, Zimbabwe). Flowering Plants of Africa 68: in press.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Figueiredo, E. (2023b) Kalanchoe orgyalis. Madagascar. Flowering Plants of Africa 68. [in press]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Figueiredo, E. & Bernhard, S. (2019b) Notes on the taxonomy and nomenclature of Kalanchoe brevisepala (Humbert) L.Allorge and its basionym, K. millotii Raym.-Hamet & H.Perrier subsp. brevisepala Humbert, and Kalanchoe dinklagei Rauh (Crassulaceae). Bradleya 37: 87–96. https://doi.org/10.25223/brad.n37.2019.a31</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Figueiredo, E. & Crouch, N.R. (2021e) Kalanchoe millotii. Crassulaceae: Kalanchooideae. Madagascar. Flowering Plants of Africa 67: 80–89, plate 2368.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Figueiredo, E., Loureiro, J. & Crouch, N.R. (2019c) Kalanchoe ×gunniae Gideon F.Sm & Figueiredo (Crassulaceae), a new South African nothospecies derived from Kalanchoe paniculata Harv. × Kalanchoe sexangularis N.E.Br. Bradleya 37: 141–150. https://doi.org/10.25223/brad.n37.2019.a9</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Figueiredo, E. & Van Wyk, A.E. (2019a) Kalanchoe (Crassulaceae) in southern Africa. Classification, biology, and cultivation. Academic Press, an imprint of Elsevier, London, San Diego, Cambridge (USA), and Oxford, 328 pp. https://doi.org/10.1016/B978-0-12-814007-9.00003-7</span></span></span>
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Monro, A.M. (2022b) (2908) Proposal to reject the name Crassulaceae subfam. Cotyledonoideae (Crassulaceae). Taxon 71 (4): 910–911. https://doi.org/10.1002/tax.12778</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Shtein, R. (2020) Kalanchoe ×edwardii (Crassulaceae subfam. Kalanchooideae), a nothospecies derived from K. beharensis and K. tomentosa. Phytotaxa 475 (2): 117–124. https://doi.org/10.11646/phytotaxa.475.2.6</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Shtein, R. (2021) A review of horticulturally desirable characters in Kalanchoe (Crassulaceae subfam. Kalanchooideae): variable and deviating vegetative and reproductive morphologies useful in breeding programmes. Haseltonia 28: 106–119. https://doi.org/10.2985/026.028.0110</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Shtein, R. & Klein, D.-P. (2021a) Kalanchoe subg. Alatae (Crassulaceae subfam. Kalanchooideae), a new rank for K. sect. Alatae. Phytotaxa 509 (2): 255–258. https://doi.org/10.11646/phytotaxa.509.2.9</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Shtein, R., Klein, D.-P., Parihar, B., Almeida, A., Rodewald, S. & Kadereit, G. (2021c) Sexual and asexual reproduction in Kalanchoe (Crassulaceae): a review of known and newly recorded strategies. Haseltonia 28: 2–22. https://doi.org/10.2985/026.028.0101</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Soga, J.F. (1891) Disease ‘Nenta’ in goats. Agricultural Journal of the Cape of Good Hope 3: 140–142.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Thiers, B. (2022 [continuously updated]) Index herbariorum: a global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/ih/ (accessed 2022).</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Koeltz Botanical Books, Glashütten. [Regnum Vegetabile 159], 254 pp. https://doi.org/10.12705/Code.2018</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Weryzko-Chmielewska, E. & Chernetskyy, M. (2005) Structure of trichomes from the surface of leaves of some species of Kalanchoë Adans. Acta Biologica Cracoviensia Series Botanica 47 (2): 15–22.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Baker, J.G. (1881 [21 February]) Notes on a collection of flowering plants made by L. Kitching, Esq., in Madagascar in 1879 (Plates VII. & VIII.). Journal of the Linnean Society, Botany 18: 264–281. [https://www.biodiversitylibrary.org/item/8373#page/271/mode/1up]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Baker, J.G. (1882) Contributions to the flora of central Madagascar (to be continued). Journal of Botany, British and Foreign. London 20: 109–114. [https://www.biodiversitylibrary.org/item/35873#page/125/mode/1up]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Baker, J.G. (1893 [27 May]) New or noteworthy plants. Cotyledon barbeyi, Schweinf. ined.* The Gardeners’ Chronicle. [A weekly illustrated journal of Horticulture and Allied Subjects], 3<sup>rd</sup> ser., XIIII(No. 335): 624–625. [https://www.biodiversitylibrary.org/item/83804#page/646/mode/1up]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Beentje, H. & Williamson, J. [illustrations] (2010) The Kew plant glossary: an illustrated dictionary of plant terms. Kew Publishing, Royal Botanic Gardens Kew, Richmond, Surrey, 160 pp.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Berger, A. (1930 [Mai]) Crassulaceae. Unterfam. II. Kalanchoideae [sic, Kalanchooideae]. 6. Kalanchoe Adanson. 7. Kitchingia Baker. 8. Bryophyllum Salisb. In: A. Engler & K. Prantl (eds.) Die natürlichen Pflanzenfamilien. edn 2, 18a. Verlag von Wilhelm Engelmann, Leipzig, pp. 378–386, 402–412.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Brown, N.E. (1913) 1436. Kalanchoe sexangularis. In: XVII—Diagnoses Africanae LIII. Bulletin of Miscellaneous Information, Kew 1913 (3): 120–121. [https://www.biodiversitylibrary.org/item/43726#page/125/mode/1up]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Calhoun, S. (2009) The hot garden. Landscaping design for the desert southwest. Rio Nuevo Publishers, Tucson, Arizona, 192 pp.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Crouch, N.R., Smith, G.F., Walters, M. & Figueiredo, E. (2016) Kalanchoe winteri Gideon F.Sm., N.R.Crouch & Mich.Walters (Crassulaceae), a new species from the Wolkberg Centre of Endemism, South Africa. Bradleya 34: 217–224. https://doi.org/10.25223/brad.n34.2016.a9</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Drake del Castillo, E. (1903) Note sur les plantes recueillies par M. Guillaume Grandidier dans le sud de Madagascar, en 1898 et 1901. (A suivre). Bulletin du Muséum d’Histoire Naturelle 9: 35–46. [https://www.biodiversitylibrary.org/page/42893852#page/45/mode/1up]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Engler, A. (1894) Über die Gliederung der Flora Usambaras und der angrenzenden Gebiete. Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin. Berlin. 1894: 1–86. [https://www.biodiversitylibrary.org/item/92793#page/55/mode/1up]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Engler, A. (Ed.) (1895) Verzeichniss der bis jetzt aus Ost-Afrika bekannt gewordenen Pflanzen. Die Pflanzenwelt Ost-Afrikas und der Nachbargebiete. Theil C. Geographische Verlagshandlung Dietrich Reimer, Berlin, pp. 1–433 [Crassulaceae on pp. 188–189]. [https://www.biodiversitylibrary.org/item/10523#page/193/mode/1up]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Figueiredo, E. & Smith, G.F. (2021) Women in the first three centuries of formal botany in southern Africa. Blumea 66 (3): 275–307. https://doi.org/10.3767/blumea.2021.66.03.10</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Figueiredo, E., Smith, G.F. & Crouch, N.R. (2016) The taxonomy and type of Kalanchoe sexangularis N.E.Br. (Crassulaceae). Bradleya 34: 92–99. https://doi.org/10.25223/brad.n34.2016.a24</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Forsskål, P. (1775) Flora Ægyptiaco-Arabica. Sive descriptiones plantarum, Quas per Ægyptum inferiorem et Arabiam felicem detexit […]. Ex officina Mölleri, aulæ Typographi. Prostat apud Heineck et Faber, Hauniæ, 220 pp. https://doi.org/10.5962/bhl.title.6625</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Gunn, M.[D.] & Codd, L.E.[W.] (1981) Botanical exploration of southern Africa. An illustrated history of early botanical literature on the Cape flora. Biographical accounts of the leading plant collectors and their activities in southern Africa from the days of the East India Company until modern times. A.A. Balkema, Cape Town, 400 pp.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hamet, R. (1908) Kalanchoe luciae sp. nov. Bulletin de l’Herbier Boissier, sér. 2, 8: 254–257. [https://www.biodiversitylibrary.org/item/104945#page/290/mode/1up]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hamet, R. & Perrier de la Bâthie, J.M.H.A. (1912) Contribution à l’étude des Crassulacées malgaches. Annales des Sciences Naturelles. Botanique, sér. 9, 16: 361–377. [https://www.biodiversitylibrary.org/item/24564#page/771/mode/1up]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hammel, T. (2020) African farmers and medicinal plant experts. In: Drayton, R. & Dubow, S. (eds.) Shaping natural history and settler society. Mary Elizabeth Barber and the nineteenth-century Cape [corrected]. Cambridge Imperial and Post-Colonial Studies Series. Palgrave Macmillan, and imprint of Springer Nature, Cham, Zug, Switzerland, pp. 39–74, the whole work 360 pp. https://doi.org/10.1007/978-3-030-22639-8_2</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Haworth, A.H. (1824 [September]) XXXI. Decas novarum Plantarum Succulentarum. (“Mr Haworth’s Decade of new Succulent Plants.”). The Philosophical Magazine and Journal[: comprehending various branches of science, the liberal and fine arts, agriculture, manufactures, and commerce] 64: 184–191. https://doi.org/10.1080/14786442408644582</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Haworth, A.H. (1825 [06 July]) III. Decas quarta novarum Plantarum Succulentarum (“Mr Haworth’s Fourth Decade of new Succulent Plants.”). The Philosophical Magazine and Journal[: comprehending various branches of science, the liberal and fine arts, agriculture, manufactures, and commerce] 66: 27–33. https://doi.org/10.1080/14786442508673917</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">IPNI. (2022 [continuously updated]) The International Plant Names Index. Available from: https://www.ipni.org/ (accessed 2022).</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Koorders, S.H. (1919 [Mai] [24 October 1918]) Beitrag zur Kenntniss der Flora von Java No. 18. Beschreibung von Kalanchoë Schumacheri vom Idjen-Plateau und Revision der Crassulaceae von Java. (Mit 2 lithographischen Tafeln.). Bulletin du Jardin Botanique de Buitenzorg sér. 3, 1 (3): 169–180, Figures 14 and 15. [https://www.biodiversitylibrary.org/item/27173#page/205/mode/1up (text); https://www.biodiversitylibrary.org/item/27173#page/243/mode/1up (figures)]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lawrence, G.H.M. (1970) Taxonomy of vascular plants, 11<sup>th</sup> printing. The Macmillan Company, New York and Toronto, Ontario, 823 pp.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Marshall<span lang="en-GB">,</span> G.A.K. (1938) XX. New Curculionidae (Col.) from southern Africa. Annals and Magazine of Natural History ser. 11, 1 (2): 178–195. [https://www.tandfonline.com/doi/abs/10.1080/00222933808526755]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Persoon, C.H. (1805 [1 April–15 June]) Synopsis plantarum, seu enchiridium botanicum, complectens enumerationem systematicam specierum hucusque cognitorum. Pars prima. Apud Carol. Frid. Cramerum, Parisiis lutetiorum [Paris] et apud J.G. Cottam, Tubingæ [London]. https://doi.org/10.5962/bhl.title.638</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Raymond-Hamet. (1916) Sur un groupe de transition reliant le genre Kalanchoe au genre Cotyledon. Revue Générale de Botanique, Paris XXVIII: 80–84. [https://www.biodiversitylibrary.org/item/45180#page/83/mode/1up]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Raymond-Hamet. (1933) Observations sur le Kalanchoe uniflora (Stapf) Raymond-Hamet. Bulletin de la Société Botanique de France 80 (4): 542–548. https://doi.org/10.1080/00378941.1933.10833878</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Salisbury, R.A. (1805 [1 June 1805]) The Paradisus Londinensis: or coloured figures of plants cultivated in the vicinity of the metropolis 1. Published by William Hooker, No. 6, Frith Street, city not stated, presumably London, 157 pp. & 117 plates. https://doi.org/10.5962/bhl.title.53520</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2020a) Kalanchoe ×estrelae (Crassulaceae subfam. Kalanchooideae): a new nothospecies for the hybrid between K. luciae and K. sexangularis. Phytotaxa 441 (2): 225–228. https://doi.org/10.11646/phytotaxa.441.2.11</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2020b) Character inheritance in Kalanchoe ‘Vivien’ Bischofberger (Crassulaceae subfam. Kalanchooideae), a cultivar derived from an interspecific hybrid between two southern African species (K. luciae Raym.-Hamet × K. sexangularis N.E.Br.). Bradleya 38: 3–13. https://doi.org/10.25223/brad.n38.2020.a1</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2020c) Zwei Neuzugänge im Kalanchoe-Gartenbau: K. ×estrelae and K. ×gunniae. / Two recent additions to Kalanchoe horticulture: K. ×estrelae and K. ×gunniae. Avonia 38 (4): 322–327.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2020d) Plant smart. The big easy. Gardening with Kalanchoe. Veld & Flora 106 (3): 40–43.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2020e) Kalanchoe Adans. subg. Fernandesiae Gideon F.Sm. (Crassulaceae subfam. Kalanchooideae), a new subgenus from southern and south-tropical Africa. Haseltonia 27: 2–7. https://doi.org/10.2985/026.027.0101</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2020f) Kalanchoe ×hummeliae Gideon F.Sm.: the hybrid between K. beharensis Drake and K. millotii Raym.-Hamet & H.Perrier (Crassulaceae subfam. Kalanchooideae). Bradleya 38: 89–93. https://doi.org/10.25223/brad.n38.2020.a12</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2020g) Nomenclature of the partial infrageneric classification proposed for Kalanchoe (Crassulaceae subfam. Kalanchooideae) by René C.J.E. Maire in 1976. Phytotaxa 468 (2): 231–235. https://doi.org/10.11646/phytotaxa.468.2.8</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2021a) Meet the kalanchoe people. New South African kalanchoe hybrids have been named in honour of key figures in our botany and horticulture. Veld & Flora 107 (2): 40–43.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2021b) Reinstatement of Kalanchoe [subg. Bryophyllum] sect. Alatae (Crassulaceae subfam. Kalanchooideae) for K. porphyrocalyx and K. uniflora, two Madagascan endemics. Bradleya 39: 177–181. https://doi.org/10.25223/brad.n39.2021.a17</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2021c) Kalanchoe ×leistneri (K. sexangularis × K. winteri) (Crassulaceae subfam. Kalanchooideae), a new southern African nothospecies. Phytotaxa 509 (2): 248–254. https://doi.org/10.11646/phytotaxa.509.2.8</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2022a) Kalanchoe sect. Raveta (Crassulaceae subfam. Kalanchooideae) of Raymond-Hamet (1916): a long-overlooked name in K. subg. Kalanchoe. Phytotaxa 550 (2): 208–212. https://doi.org/10.11646/phytotaxa.550.2.10</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2022b) A review of the ecology and natural history of Kalanchoe (Crassulaceae subfam. Kalanchooideae) in southern Africa. Bradleya 40: 161–184. https://doi.org/10.25223/brad.n40.2022.a15</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2022c) Notes on Kalanchoe subg. Bryophyllum (Crassulaceae subfam. Kalanchooideae) and the kalanchoes of Sijfert H. Koorders (1919). Phytotaxa 549 (1): 87–96. https://doi.org/10.11646/phytotaxa.549.1.7</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. (2022d) Identity of Kalanchoe ‘Fang’ and K. ‘Rose Leaf’, two cultivars derived from K. ×edwardii (Crassulaceae subfam. Kalanchooideae), with notes on aspects of interspecific hybridisation in the genus. Bradleya 40: 151–160. https://doi.org/10.25223/brad.n40.2022.a14</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Figueiredo, E. (2018) The infrageneric classification and nomenclature of Kalanchoe Adans. (Crassulaceae), with special reference to the southern African species. Bradleya 36: 162–172. https://doi.org/10.25223/brad.n36.2018.a10</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Figueiredo, E. (2019) Taxonomic and nomenclatural notes on Kalanchoe millotii Raym.-Hamet & H.Perrier and the cultivar Kalanchoe ‘Fern Leaf’ (Crassulaceae). Bradleya 37: 79–86. https://doi.org/10.25223/brad.n37.2019.a30</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Figueiredo, E. (2020) Kalanchoe ×gildenhuysii (Crassulaceae subfam. Kalanchooideae), a new nothospecies derived from K. millotii and K. tomentosa. Phytotaxa 442 (1): 43–46. https://doi.org/10.11646/phytotaxa.442.1.8</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Figueiredo, E. (2022a) Clarifying the typification of the name Kalanchoe orgyalis (Crassulaceae subfam. Kalanchooideae). Phytotaxa 543 (1): 99–102. https://doi.org/10.11646/phytotaxa.543.1.11</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Figueiredo, E. (2022b) Nomenclatural and taxonomic notes on the names published in Kalanchoe (Crassulaceae subfam. Kalanchooideae) by Drake del Castillo in 1903. Phytotaxa 547 (2): 158–166. https://doi.org/10.11646/phytotaxa.547.2.3</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Figueiredo, E. (2023a). Kalanchoe luciae. Crassulaceae subfam. Kalanchooideae. Southern and south-tropical Africa (South Africa, Swaziland, Mozambique, Zimbabwe). Flowering Plants of Africa 68: in press.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Figueiredo, E. (2023b) Kalanchoe orgyalis. Madagascar. Flowering Plants of Africa 68. [in press]</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Figueiredo, E. & Bernhard, S. (2019b) Notes on the taxonomy and nomenclature of Kalanchoe brevisepala (Humbert) L.Allorge and its basionym, K. millotii Raym.-Hamet & H.Perrier subsp. brevisepala Humbert, and Kalanchoe dinklagei Rauh (Crassulaceae). Bradleya 37: 87–96. https://doi.org/10.25223/brad.n37.2019.a31</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Figueiredo, E. & Crouch, N.R. (2021e) Kalanchoe millotii. Crassulaceae: Kalanchooideae. Madagascar. Flowering Plants of Africa 67: 80–89, plate 2368.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Figueiredo, E., Loureiro, J. & Crouch, N.R. (2019c) Kalanchoe ×gunniae Gideon F.Sm & Figueiredo (Crassulaceae), a new South African nothospecies derived from Kalanchoe paniculata Harv. × Kalanchoe sexangularis N.E.Br. Bradleya 37: 141–150. https://doi.org/10.25223/brad.n37.2019.a9</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Figueiredo, E. & Van Wyk, A.E. (2019a) Kalanchoe (Crassulaceae) in southern Africa. Classification, biology, and cultivation. Academic Press, an imprint of Elsevier, London, San Diego, Cambridge (USA), and Oxford, 328 pp. https://doi.org/10.1016/B978-0-12-814007-9.00003-7</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Figueiredo, E. & Walker, C.C. (2021d) Kalanchoe beharensis. Crassulaceae subfam. Kalanchooideae. Madagascar. Flowering Plants of Africa 67: 50–59, plate 2365.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Hankey, A. (2021) Kalanchoe ×forbesiae (Crassulaceae subfam. Kalanchooideae) derived from K. lubangensis × K. sexangularis: towards improved horticultural material. Phytotaxa 528 (5): 290–300. https://doi.org/10.11646/phytotaxa.528.5.3</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Klein, D.-P. & Shtein, R. (2021b) A revision of the Malagasy Kalanchoe subg. Kitchingia (Crassulaceae subfam. Kalanchooideae): history, taxonomy, and nomenclature. Phytotaxa 507 (1): 67–80. https://doi.org/10.11646/phytotaxa.507.1.3</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Monro, A.M. (2022a) The nomenclature and taxonomy of Crassulaceae subfam. Kalanchooideae resolved. Phytotaxa 555 (3): 241–251. https://doi.org/10.11646/phytotaxa.555.3.3</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Monro, A.M. (2022b) (2908) Proposal to reject the name Crassulaceae subfam. Cotyledonoideae (Crassulaceae). Taxon 71 (4): 910–911. https://doi.org/10.1002/tax.12778</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Shtein, R. (2020) Kalanchoe ×edwardii (Crassulaceae subfam. Kalanchooideae), a nothospecies derived from K. beharensis and K. tomentosa. Phytotaxa 475 (2): 117–124. https://doi.org/10.11646/phytotaxa.475.2.6</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F. & Shtein, R. (2021) A review of horticulturally desirable characters in Kalanchoe (Crassulaceae subfam. Kalanchooideae): variable and deviating vegetative and reproductive morphologies useful in breeding programmes. Haseltonia 28: 106–119. https://doi.org/10.2985/026.028.0110</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Shtein, R. & Klein, D.-P. (2021a) Kalanchoe subg. Alatae (Crassulaceae subfam. Kalanchooideae), a new rank for K. sect. Alatae. Phytotaxa 509 (2): 255–258. https://doi.org/10.11646/phytotaxa.509.2.9</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smith, G.F., Shtein, R., Klein, D.-P., Parihar, B., Almeida, A., Rodewald, S. & Kadereit, G. (2021c) Sexual and asexual reproduction in Kalanchoe (Crassulaceae): a review of known and newly recorded strategies. Haseltonia 28: 2–22. https://doi.org/10.2985/026.028.0101</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Soga, J.F. (1891) Disease ‘Nenta’ in goats. Agricultural Journal of the Cape of Good Hope 3: 140–142.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Thiers, B. (2022 [continuously updated]) Index herbariorum: a global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/ih/ (accessed 2022).</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Koeltz Botanical Books, Glashütten. [Regnum Vegetabile 159], 254 pp. https://doi.org/10.12705/Code.2018</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Weryzko-Chmielewska, E. & Chernetskyy, M. (2005) Structure of trichomes from the surface of leaves of some species of Kalanchoë Adans. Acta Biologica Cracoviensia Series Botanica 47 (2): 15–22.</span></span></span>