Aloe immaculata and A. affinis (Asphodelaceae subfam. Alooideae), two endemics from northern and eastern South Africa, are different maculate aloe species

GIDEON F. SMITH; RONELL R. KLOPPER

doi:10.11646/phytotaxa.571.3.3

Issue: Vol. 571 No. 3: 4 November 2022

Type: Article

Published: 2022-11-04

DOI: 10.11646/phytotaxa.571.3.3

Page range: 291-300

Abstract views: 27

PDF downloaded: 1

Aloe immaculata and A. affinis (Asphodelaceae subfam. Alooideae), two endemics from northern and eastern South Africa, are different maculate aloe species

GIDEON F. SMITH⁺⁻
RONELL R. KLOPPER⁺⁻

Ria Olivier Herbarium, Department of Botany, Nelson Mandela University, P.O. Box 77000, Gqeberha, 6031 South Africa.

Foundational Biodiversity Science Division, South African National Biodiversity Institute, Private Bag X101, Pretoria, 0001 South Africa. Department of Plant and Soil Sciences, University of Pretoria, Pretoria, 0002 South Africa.

Eswatini Limpopo province Mpumalanga province nomenclature taxonomy Monocots

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Abstract

We show that Aloe immaculata and A. affinis (Asphodelaceae subfam. Alooideae) are two different species. Aloe immaculata, a Limpopo province, South Africa, endemic, is therefore reinstated and treated as distinct from A. affinis, an endemic of the eastern, mainly Drakensberg escarpment in Mpumalanga, South Africa, and southeastern Limpopo, and northwestern Eswatini. Vegetatively, the two species mainly differ in terms of leaf colour (dull green to brownish green in the case of A. immaculata and brighter green in the case of A. affinis). Reproductively, the species differ in inflorescence structure (subcapitate to conical and round-topped racemes in the case of A. immaculata and cylindric-acuminate ones in the case of A. affinis) and flower size and colour (pale flesh pink and 28–33 mm long in A. immaculata and scarlet red and 40–45 mm long in A. affinis). The two species are compared and illustrated, and descriptions for both species and a combined distribution map are provided.

References

Berger, A. (1908) 8. Aloe L. In: Engler, A. (ed.) Liliaceae-Asphodeloideae-Aloineae. Das Pflanzenreich IV. 38. III. II. Heft 33. Verlag von Wilhelm Engelmann, Leipzig, pp. 159–326. [https://www.biodiversitylibrary.org/item/68230#page/165/mode/1up]
Bornman, H. & Hardy, D.[S.] (1971) Aloes of the South African veld. Voortrekkerpers, Johannesburg, 299 pp.
Carter, S., Lavranos, J.J., Newton, L.E. & Walker, C.C. (2011) Aloes. The definitive guide. Kew Publishing, Royal Botanic Gardens, Kew / British Cactus & Succulent Society, London, 719 pp.
Glen, H.F. & Hardy, D.S. (1987) Nomenclatural notes on three southern African representatives of the genus Aloe. South African Journal of Botany 53 (6): 489–492. https://doi.org/10.1016/S0254-6299(16)31383-7
Glen, H.F. & Hardy, D.S. (2000) Aloaceae (First part): Aloe. In: Germishuizen, G. (ed.) Flora of southern Africa, Vol. 5, Part 1, Fasc. 1. National Botanical Institute, Pretoria, pp. 1–167.
Grace, O.M. (2009) Contributions to the systematics and biocultural value of Aloe L. (Asphodelaceae). Ph.D. thesis, University of Pretoria, Pretoria, 158 pp. https://hdl.handle.net/2263/26261
Grace, O.M., Klopper, R.R., Figueiredo, E. & Smith, G.F. (2011) The aloe names book. Strelitzia 29. South African National Biodiversity Institute, Pretoria, and Royal Botanic Gardens, Kew, 232 pp. https://hdl.handle.net/20.500.12143/270
Grace, O.M., Simmonds, M.S.J., Smith, G.F. & Van Wyk, A.E. (2009) Taxonomic significance of leaf surface morphology in Aloe section Pictae (Xanthorrhoeaceae). Botanical Journal of the Linnean Society 160 (4): 418–428. https://doi.org/10.1111/j.1095-8339.2009.00982.x
Groenewald, B.H. [as “B.H.G.”] (1936) ’n Nuwe aloesoort van Pretoria distrik [Aloe labiaflava]. Tydskrif vir Wetenskap en Kuns 14: 57–59.
Groenewald, B.H. (1941) Die aalwyne van Suid-Afrika, Suidwes-Afrika, Portugees Oos-Afrika, Swaziland, Basoetoeland, en ’n spesiale ondersoek van die klassifikasie, chromosome en areale van die Aloe Maculatae. Die Nasionale Pers Beperk, Bloemfontein, 172 pp.
IPNI. (2022 [continuously updated]) The International Plant Names Index. Available from: https://www.ipni.org/ (accessed August 2022).
Jacobsen, H. (1977) Lexicon of succulent plants. Short descriptions, habitats and synonymy of succulent plants other than Cactaceae. Blandford Press Ltd, Poole, Dorset, 682 pp.
Jacobsen, H. (1986) A handbook of succulent plants. Descriptions, synonyms and cultural details for succulents other than Cactaceae. Vol. 1. Abromeitiella to Euphorbia. Blandford Press Ltd, Poole, Dorset, 464 pp.
Jeppe, B. (1969) South African aloes. Purnell & Sons S.A. (Pty) Ltd, Cape Town, Johannesburg, London, 144 pp.
Judd, E. (1967) What aloe is that? A Purnell Pocketbook. Southern African Series. Purnell, Cape Town & Johannesburg, 76 pp.
Klopper, R.R. (2015) Contributions to the systematics of the genus Aloe L. (Asphodelaceae: Alooideae) in southern Africa. Ph.D. thesis. University of Pretoria, Pretoria, 712 pp.
Klopper, R.R., Grace, O.M., Smith, G.F. & Figueiredo, E. (2011) Reinstatement of Aloe graciliflora Groenew. (Asphodelaceae: Alooideae), a maculate aloe from north-east South Africa. Bradleya 29: 125–130. https://doi.org/10.25223/brad.n29.2011.a15
Klopper, R.R., Smith, G.F., Grace, O.M. & Crouch, N.R. (2014) Reinstatement of Aloe barbertoniae Pole-Evans (Asphodelaceae: Alooideae) from northeastern South Africa. Bradleya 32: 70–75. https://doi.org/10.25223/brad.n32.2014.a21
Linnaeus, C. (1753) Species plantarum, exhibentes plantas rite cognitas, ad generarelatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas. Vol. 1. Salvius, Stockholm. [Aloe L. treated on pp. 319–323]. https://www.biodiversitylibrary.org/item/13829#page/333/mode/1up
Newton, L.E. (2001) Aloe. In: Eggli, U. (ed.) Illustrated handbook of succulent plants: Monocotyledons. Springer-Verlag, Berlin, pp. 103–186.
Newton, L.E. (2020) Aloe. In: Eggli, U. & Nyffeler, R. (eds.) Illustrated handbook of succulent plants: Monocotyledons, Vol. 1. Springer-Verlag, Berlin, pp. 485–696.
Pillans, N.S. (1934) Plants: new or noteworthy. South African Gardening 24: 25–27.
Pole Evans, I.B. (1915) Descriptions of some new aloes from the Transvaal [including Aloe longibracteata Pole-Evans on p. 25]. Transactions of the Royal Society of South Africa 5: 25–35, + Plates V–XV. [https://www.biodiversitylibrary.org/page/47226163#page/87/mode/1up]
Raper, P.E., Möller, L.A. & Du Plessis, L.T. (2014) Dictionary of Southern African place names. Jonathan Ball Publishers, Johannesburg & Cape Town, 566 pp.
Reynolds, G.W. (1950 [December]) The aloes of South Africa. The Trustees, The Aloes of South Africa Book Fund, Johannesburg, 520 pp.
Riley, H.P. & Majumdar, S.K. (1979) The Aloineae. A biosystematic survey. The University of Kentucky Press, place of publication not stated, 180 pp. [“Index of Families, Genera & Species” only partially numbered; https://www.jstor.org/stable/j.ctt130jhd1]
Salm-Reifferscheidt-Dyck, J.F.M.A.H.I. (1837 [probably June]) Monographia generum aloes et mesembryanthemi, Fasc. 1. Maximillian Cohen, Bonn, 60 plates, 72 pp. https://doi.org/10.5962/bhl.title.153143
Schönland, S. (1904) On some new and some little known species of South African plants. II. Records of the Albany Museum 1: 114–124. [https://www.biodiversitylibrary.org/item/31254#page/132/mode/1up]
Schönland, S. (1905) On some South African species of Aloe with special reference to those represented in the Herbarium of the Albany Museum. II. Records of the Albany Museum 1: 282–295. [https://www.biodiversitylibrary.org/item/31254#page/308/mode/1up]
Smith, G.F. (2003) First field guide to aloes of southern Africa. Struik Nature, Cape Town, 57 pp.
Smith, G.F., Figueiredo, E. & Esser, H.-J. (2020b) The aloes of Friedrich Wilms: notes on Aloe wilmsii Diels ex Hausen, A. affinis A.Berger, and A. cinnabarina Diels ex A.Berger (Asphodelaceae subfam. Alooideae), with a biographical sketch of Wilms. Bradleya 38: 75–83. https://doi.org/10.25223/brad.n38.2020.a10
Smith, G.F., Figueiredo, E., Klopper, R.R. & Crouch, N.R. (2012) Summer-flowering species of maculate Aloe L. (Asphodelaceae: Alooideae) in the Aloe zebrina-complex from South Africa: reinstatement of four names, and description of A. braamvanwykii Gideon F.Sm. & Figueiredo. Bradleya 30: 155–166. https://doi.org/10.25223/brad.n30.2012.a19
Smith, G.F. & Klopper, R.R. (2021) Reinstatement of Aloe labiaflava (Asphodelaceae subfam. Alooideae), a distinctive species of maculate aloe endemic to the western Mpumalanga province of South Africa. Phytotaxa 512 (3): 179–189. https://doi.org/10.11646/phytotaxa.512.3.5
Smith, G.F., Klopper, R.R., Crouch, N.R. & Figueiredo, E. (2020a) Reinstatement of Aloe davyana (Asphodelaceae subfam. Alooideae), a winter-flowering species endemic to central-northeastern South Africa. Phytotaxa 475 (3): 201–208. https://doi.org/10.11646/phytotaxa.475.3.4
Smith, G.F., Klopper, R.R., Crouch, N.R. & Figueiredo, E. (2021) Reinstatement of Aloe davyana var. subolifera (Asphodelaceae subfam. Alooideae), a distinctive variety of an endemic South African aloe. Phytotaxa 482 (2): 208–212. https://doi.org/10.11646/phytotaxa.482.2.9
Smith, G.F. & Van Wyk, B. (2008) Aloes in southern Africa. Struik Publishers, Cape Town, 136 pp.
Smith, G.F., Walters, M., Klopper, R.R. & Crouch, N.R. (2008a) Aloes of the world: African Plants Initiative. An international web-based collaboration to promote scholarly research on Aloe L. Bradleya 26: 121–128. https://doi.org/10.25223/brad.n26.2008.a2
Smith, G.F., Walters, M., Crouch, N.R. & Klopper, R.R. (2008b) Aloes of the world: a comprehensive collaboration to consolidate knowledge on the genus Aloe L. Aloe 45 (1): 19–20.
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 August 2022).
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. [Regnum Vegetabile 159]. Koeltz Botanical Books, Glashütten, 254 pp. https://doi.org/10.12705/Code.2018
Van Wyk, B-E. & Smith, G.[F.] (1996) Guide to the aloes of South Africa. 1st edition. Briza Publications, Pretoria, 302 pp.
Van Wyk, B-E. & Smith, G.[F.] (2003) Guide to the aloes of South Africa. 2nd edition. Briza Publications, Pretoria, 304 pp.
Van Wyk, B-E. & Smith, G.F. (2014) Guide to the aloes of South Africa. 3rd edition. Briza Publications, Pretoria, 376 pp.