Abstract
The nomenclature and taxonomy of Kalanchoe bentii (Crassulaceae subfam. Kalanchooideae) are discussed and clarified, and an amplified description is provided for the species, in which two subspecies are recognised, i.e., K. bentii subsp. bentii and K. bentii subsp. somalica. The typification of the name K. bentii and, where necessary, its heterotypic synonyms is corrected.
References
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<p>Cufodontis, G. (1965) The species of <em>Kalanchoe</em> occurring in Ethiopia and Somalia Republic. <em>Webbia</em> 19 (2): 711–744.</p>
<p>Deflers, A. (1894 [28 February]) Note sur un <em>Kalanchoe</em> remarquable de l’Arabie tropicale. <em>Bulletin de la Société Botanique de France</em> 40: 298–301, Planche III–V. [text: https://www.biodiversitylibrary.org/item/8662#page/311/mode/1up, illustrations: https://www.biodiversitylibrary.org/item/8662#page/408/mode/1up]</p>
<p>Demoly, J.-P. (1999 [June]) <em>“Les Cèdres” an exceptional botanical garden. Saint-Jean-Cap-Ferrat</em>. Franklin Picard Editions, Paris, 304 pp.</p>
<p>Descoings, B. (2003) <em>Kalanchoe</em>. <em>In</em>: U. Eggli (ed.) <em>Illustrated handbook of succulent plants: Crassulaceae</em>. Springer-Verlag, Berlin, pp. 143–181.</p>
<p>Gagnepain, F. (1916) Quelques <em>Kalanchoe</em> nouveaux d’asie. <em>Notulae Systematicae (Paris)</em> 3: 219–222. [https://www.biodiversitylibrary.org/item/26200#page/225/mode/1up]</p>
<p>Goethe, J.W. von. (1857) “Mit einem Blatt <em>Bryophyllum calycinum</em>” [“With a leaf of <em>Bryophyllum calycinum</em>”], a poem written as part of a letter Goethe wrote to Marianne von Willemer on 19 April 1830, to which a leaf of <em>Kalanchoe pinnata</em> [= <em>Bryophyllum calycinum</em>] was attached. <em>In</em>: <em>Goethe’s sämtliche Werke</em>. In dreizig Bänden. Vollstandige, neugeordnete Ausgabe. Sechster Band, pp. 161–162. J.G. Cotta, Stuttgart, whole work 462 pp. [https://books.google.ch/books?id=Zt8FAAAAQAAJ&pg=PA161#v=onepage&q&f=false]</p>
<p>Gunn, M.[D.] & Codd, L.E.[W.]. (1981) <em>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</em>. A.A. Balkema, Cape Town, 400 pp.</p>
<p>Hamet, R. (1907) Monographie du genre <em>Kalanchoe</em>. <em>Bulletin de l’Herbier Boissier</em>, sér. 2, 7: 869–900. [https://www.biodiversitylibrary.org/item/105267#page/939/mode/1up]</p>
<p>Hamet, R. (1908) Monographie du genre <em>Kalanchoe</em> (Suite et fin.). <em>Bulletin de l’Herbier Boissier</em>, sér. 2, 8: 17–48. [https://www.biodiversitylibrary.org/item/104945#page/31/mode/1up]</p>
<p>Haworth, A.H. (1831) <em>Calanchoe</em> [sic] <em>teretifolia</em> and <em>Calanchoe</em> [sic] <em>varians</em>. <em>In</em>: N. Wallich, <em>Plantae asiaticæ rariores; or, descriptions and figures of a select number of unpublished East Indian plants</em>, [...]. Vol. II containing Plates CI.–CC. Treuttel & Würtz, London, Paris & Strasburgh, pp. 53–54, tab. 166–167. [https://www.biodiversitylibrary.org/item/9715#page/122/mode/1up]</p>
<p>Hooker, J.D. (1901 [March]) <em>Kalanchoe bentii</em>. Native of Southern Arabia. Nat. Ord. Crassulaceæ. <em>Curtis’s Botanical Magazine</em>[<em>, comprising the plants of the Royal Gardens of Kew, and of other botanical establishments in Great Britain ; with suitable descriptions;</em>] 3<sup>rd</sup> ser., LVII (or Vol. CXXVII of the whole work [No. 675 or No. 1369 of the entire work]): t. 7765. [https://www.biodiversitylibrary.org/item/14255#page/55/mode/1up]</p>
<p>IPNI. (2022 [continuously updated]) <em>The International Plant Names Index</em>. Available from: https://www.ipni.org/ (accessed 2022).</p>
<p>Jacobsen, H. (1935) <em>Succulent plants. Description, cultivation and uses of succulent plants other than cacti</em>. Williams and Norgate, Ltd, London, 293 pp.</p>
<p>Jacobsen, H. (1977) <em>Lexicon of succulent plants. Short descriptions, habitats and synonymy of succulent plants other than Cactaceae</em>. Revised and enlarged 2<sup>nd</sup> edn. Blandford Press, Poole, Dorset, 682 pp.</p>
<p>Jacobsen, H. (1986) <em>A handbook of succulent plants. Descriptions, synonyms and cultural details for succulents other than Cactaceae. Vol. II. </em>Ficus<em> to </em>Zygophyllum. Blandford Press, Poole, Dorset, pp. 465–864.</p>
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