Abstract
A new species of Aloe (Asphodelaceae subfam. Alooideae), A. hankeyi, which belongs in A. sect. Leptoaloe is described from northern South Africa. The new species has affinities with A. cooperi and A. verecunda, from both of which it can be separated on vegetative and reproductive characters.
References
<p>Baker, J.G. (1874 [16 May]) New garden plants. <em>Aloe</em> (<em>Eualoe</em>) <em>cooperi</em>, Hort. Saunders* [with a Latin description as a footnote on p. 628]. <em>Gardeners’ Chronicle</em> [<em>London</em>], new series, 1: 628. [https://www.biodiversitylibrary.org/item/84203#page/640/mode/1up]</p>
<p>Berger, A. (1908 [8 May]) 8. <em>Aloe</em> L. <em>In</em>: Engler, A. (Ed.) <em>Das Pflanzenreich. Regni vegetabilis conspectus</em> IV. 38. III. II. (Heft 33) (Liliaceae-Asphodeloideae-Aloineae.). Verlag von Wilhelm Engelmann, Leipzig, pp. 159–326, 329–330. [https://www.biodiversitylibrary.org/item/68230#page/165/mode/1up]</p>
<p>Bornman, H. & Hardy, D.[S.] (1971) <em>Aloes of the South African veld</em>. Voortrekkerpers, Johannesburg, 299 pp.</p>
<p>Craib, C. (2005) <em>Grass aloes in the South African veld</em>. Umdaus Press, Hatfield, Pretoria, xii + 156 pp.</p>
<p>Glen, H.F. & Hardy, D.S. (2000) Aloaceae (First part): <em>Aloe</em>. <em>In</em>: Germishuizen, G. (Ed.) <em>Flora of Southern Africa</em>, Vol. 5, Part 1, Fascicle 1. National Botanical Institute, Pretoria, pp. 1–167.</p>
<p>IPNI. (2022 [continuously updated]) <em>The International Plant Names Index</em>. Available from: https://www.ipni.org/ (accessed March 2022).</p>
<p>Klopper, R.R., Crouch, N.R., Smith, G.F. & Van Wyk, A.E. (2020) A synoptic review of the aloes (Asphodelaceae, Alooideae) of KwaZulu-Natal, an ecologically diverse province in eastern South Africa. <em>PhytoKeys</em> 142: 1–88. https://doi.org/10.3897/phytokeys.142.48365</p>
<p>Linnaeus, C. (1753) <em>Species plantarum, exhibentes plantas rite cognitas, ad generarelatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas</em>. Vol. 1. Salvius, Stockholm. [<em>Aloe</em> L. treated on pp. 319–323]. [https://www.biodiversitylibrary.org/item/13829#page/331/mode/1up]</p>
<p>Pole Evans, I.B. (1917) Descriptions of some new aloes from the Transvaal. Part II. [<em>Aloe verecunda</em> on pp. 703–704 & Plate L]. <em>Transactions of the Royal Society of South Africa</em> 5 (6): 703–711 + Plates L–LVI. [https://www.biodiversitylibrary.org/item/181589#page/885/mode/1up]</p>
<p>Reynolds, G.W. (1947) Genus <em>Leptaloe</em> Stapf. Restoration to <em>Aloe</em> Linn. <em>Journal of South African Botany</em> 13: 99–105 + Plates XIV–XVI on preceding pages, each Plate consisting of two Figures. [https://archive.org/details/journalofsouthaf13unse/page/n121/mode/2up]</p>
<p>Reynolds, G.W. (1950) <em>The aloes of South Africa</em>. The Aloes of South Africa Book Fund, Johannesburg, 534 pp.</p>
<p>Smith, G.F. (2005) The fascinating world of the grass aloes of South Africa. <em>In</em>: Craib, C. (Ed.) <em>Grass aloes of the South African veld</em>. Umdaus Press, Hatfield. pp. viii–ix.</p>
<p>Smith, G.F. (2020) <em>Kalanchoe</em> ×<em>hankeyi</em> [= <em>K. longiflora</em> × <em>K. sexangularis</em>] (Crassulaceae subfam. Kalanchooideae), a new nothospecies from South Africa. <em>Phytotaxa</em> 451 (1): 93–96. https://doi.org/10.11646/phytotaxa.451.1.9</p>
<p>Smith, G.F. & Figueiredo, E. (2015) <em>Garden aloes. Growing and breeding cultivars and hybrids</em>. Jacana Media (Pty), Ltd, Auckland Park, Johannesburg, xiv, 193 pp.</p>
<p>Stapf, O. (1933) <em>Leptaloe myriacantha</em>. <em>Curtis’s Botanical Magazine</em> 156: t. 9300.</p>
<p>Thiers, B. (2022 [continuously updated]) <em>Index herbariorum: a global directory of public herbaria and associated staff.</em> New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/ih/ (accessed March 2022).</p>
<p>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) <em>International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017</em>. [Regnum Vegetabile 159] Koeltz Botanical Books, Glashütten, 254 pp. https://doi.org/10.12705/Code.2018</p>
<p>Van Wyk, B-E. & Smith, G.F. (2014) <em>Gids tot die aalwyne van Suid-Afrika</em>. Briza Publikasies, Pretoria, 376 pp.</p>
<p>Berger, A. (1908 [8 May]) 8. <em>Aloe</em> L. <em>In</em>: Engler, A. (Ed.) <em>Das Pflanzenreich. Regni vegetabilis conspectus</em> IV. 38. III. II. (Heft 33) (Liliaceae-Asphodeloideae-Aloineae.). Verlag von Wilhelm Engelmann, Leipzig, pp. 159–326, 329–330. [https://www.biodiversitylibrary.org/item/68230#page/165/mode/1up]</p>
<p>Bornman, H. & Hardy, D.[S.] (1971) <em>Aloes of the South African veld</em>. Voortrekkerpers, Johannesburg, 299 pp.</p>
<p>Craib, C. (2005) <em>Grass aloes in the South African veld</em>. Umdaus Press, Hatfield, Pretoria, xii + 156 pp.</p>
<p>Glen, H.F. & Hardy, D.S. (2000) Aloaceae (First part): <em>Aloe</em>. <em>In</em>: Germishuizen, G. (Ed.) <em>Flora of Southern Africa</em>, Vol. 5, Part 1, Fascicle 1. National Botanical Institute, Pretoria, pp. 1–167.</p>
<p>IPNI. (2022 [continuously updated]) <em>The International Plant Names Index</em>. Available from: https://www.ipni.org/ (accessed March 2022).</p>
<p>Klopper, R.R., Crouch, N.R., Smith, G.F. & Van Wyk, A.E. (2020) A synoptic review of the aloes (Asphodelaceae, Alooideae) of KwaZulu-Natal, an ecologically diverse province in eastern South Africa. <em>PhytoKeys</em> 142: 1–88. https://doi.org/10.3897/phytokeys.142.48365</p>
<p>Linnaeus, C. (1753) <em>Species plantarum, exhibentes plantas rite cognitas, ad generarelatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas</em>. Vol. 1. Salvius, Stockholm. [<em>Aloe</em> L. treated on pp. 319–323]. [https://www.biodiversitylibrary.org/item/13829#page/331/mode/1up]</p>
<p>Pole Evans, I.B. (1917) Descriptions of some new aloes from the Transvaal. Part II. [<em>Aloe verecunda</em> on pp. 703–704 & Plate L]. <em>Transactions of the Royal Society of South Africa</em> 5 (6): 703–711 + Plates L–LVI. [https://www.biodiversitylibrary.org/item/181589#page/885/mode/1up]</p>
<p>Reynolds, G.W. (1947) Genus <em>Leptaloe</em> Stapf. Restoration to <em>Aloe</em> Linn. <em>Journal of South African Botany</em> 13: 99–105 + Plates XIV–XVI on preceding pages, each Plate consisting of two Figures. [https://archive.org/details/journalofsouthaf13unse/page/n121/mode/2up]</p>
<p>Reynolds, G.W. (1950) <em>The aloes of South Africa</em>. The Aloes of South Africa Book Fund, Johannesburg, 534 pp.</p>
<p>Smith, G.F. (2005) The fascinating world of the grass aloes of South Africa. <em>In</em>: Craib, C. (Ed.) <em>Grass aloes of the South African veld</em>. Umdaus Press, Hatfield. pp. viii–ix.</p>
<p>Smith, G.F. (2020) <em>Kalanchoe</em> ×<em>hankeyi</em> [= <em>K. longiflora</em> × <em>K. sexangularis</em>] (Crassulaceae subfam. Kalanchooideae), a new nothospecies from South Africa. <em>Phytotaxa</em> 451 (1): 93–96. https://doi.org/10.11646/phytotaxa.451.1.9</p>
<p>Smith, G.F. & Figueiredo, E. (2015) <em>Garden aloes. Growing and breeding cultivars and hybrids</em>. Jacana Media (Pty), Ltd, Auckland Park, Johannesburg, xiv, 193 pp.</p>
<p>Stapf, O. (1933) <em>Leptaloe myriacantha</em>. <em>Curtis’s Botanical Magazine</em> 156: t. 9300.</p>
<p>Thiers, B. (2022 [continuously updated]) <em>Index herbariorum: a global directory of public herbaria and associated staff.</em> New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/ih/ (accessed March 2022).</p>
<p>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) <em>International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017</em>. [Regnum Vegetabile 159] Koeltz Botanical Books, Glashütten, 254 pp. https://doi.org/10.12705/Code.2018</p>
<p>Van Wyk, B-E. & Smith, G.F. (2014) <em>Gids tot die aalwyne van Suid-Afrika</em>. Briza Publikasies, Pretoria, 376 pp.</p>