Skip to main content Skip to main navigation menu Skip to site footer
Article
Published: 2022-01-21

Pelargonium pseudosetulosum (Geraniaceae), a new species in sect. Pelargonium from the Kogelberg-Kleinmond area in Western Cape Province, South Africa

Foundational Biodiversity Sciences Division, Pretoria National Herbarium, South African National Biodiversity Institute, Private Bag X101, Silverton 0184, South Africa; Department of Botany and Plant Biotechnology, University of Johannesburg, Post Office Box 524, Auckland Park 2006, South Africa
Foundational Biodiversity Sciences Division, Compton Herbarium, South African National Biodiversity Institute, Private Bag X7, Claremont 7735, South Africa.
alpha taxonomy Cape Floristic Region endemic eyespot nectar guide Pelargonium setulosum Eudicots

Abstract

Populations of plants from around Kleinmond in the Western Cape Province (South Africa), previously identified as Pelargonium setulosum, differ from typical populations of that species in ecology, distribution, and morphologically in the shape of the nectar guides, and appear to constitute a separate species. Field work was done, specimens were collected in the field, and material from four different herbaria were studied to record morphological variation. The Kleinmond populations previously included in P. setulosum are described as the new species P. pseudosetulosum. Morphological, ecological, and geographical evidence indicate that this species forms part of Pelargonium subg. Pelargonium sect. Pelargonium.

References

  1. Aiton, W. (1789) Hortus Kewensis, Vol. 2. Nicol, London, pp. 460. https://doi.org/10.5962/bhl.title.4504

  2. De Candolle, A.P. (1824) Geraniaceae. Prodromus systematis naturalis regni vegetabilis, Vol. 1. Treutel & Wuertz, Paris, 745 pp.

  3. Ecklon, C.F. & Zeyher, C.L.P. (1835) Enumeratio plantarum Africae australis extratropicae: quae collectae, determinatae et expositae. Sumtibus auctorum. Prostat apud Perthes & Besser, Hamburgi, 144 pp.

  4. Jacquin, N.J. (1797) Plantarum rariorum horti caesarei Schoenbrunnensis, Vol. 2. C.F. Wappler, Vienna, 68 pp. https://doi.org/10.5962/bhl.title.332

  5. Jussieu, A.L. (1789) Genera Plantarum. Apud viduam Herissant et Theophilum Barrois, Aprisiis, 498 pp. https://doi.org/10.5962/bhl.title.284

  6. Knuth, R. (1912) Geraniaeeae. In: Engler, A. (Ed.) Das Pflanzenreich IV.129. Willhelm Engelmann, Leipzig, pp. 316–517. [https://www.biodiversitylibrary.org/bibliography/250#/summary]

  7. Le Roux, M.M. (2019) A taxonomic revision of the southern African species of Pelargonium section Peristera (Geraniaceae). Phytotaxa 418 (2): 119–157. https://doi.org/10.11646/phytotaxa.418.2.1

  8. Leistner, O.A. & Morris, J.W. (1976) Southern African place names. Annals of the Cape Provincial Museums 12: 1–565.

  9. Manning, J.C. & Goldblatt, P. (Eds.) (2012) Plants of the Greater Cape Floristic Region 1: The Core Cape flora. Strelitzia 29. South African National Biodiversity Institute, Pretoria, pp. 853.

  10. Röschenbleck, J., Albers, F., Müller, K., Weinl, S. & Kudla, J. (2014) Phylogenetics, character evolution and a subgeneric revision of the genus Pelargonium (Geraniaceae). Phytotaxa 159 (2): 31–76. https://doi.org/10.11646/phytotaxa.159.2.1

  11. Snijman, D.A. (Ed.) (2013) Plants of the Greater Cape Floristic Region 2: The Extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria, pp. 543.

  12. Steudel, E.T. (1841) Nomenklator botanicus, seu, Synonymia plantarum universalis, part 2. J.G. Cottae, Stuttgart, Tübingen, 810 pp. https://doi.org/10.5962/bhl.title.655

  13. Thiers, B. (2021) Index Herbariorum: A global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/science/ih/ (accessed 11 November 2021)

  14. Turczaninow, N. (1858) Animadversiones in secundam partem herbaria Turczaninowiani, nunc universitatis Caesareae Charkowiensis. Bulletin de la Société Impériale des Maturalistes de Moscou 31: 379–476. [https://www.biodiversitylibrary.org/item/151363#page/395/mode/1up]

  15. Van der Walt, J.J.A. (1977) Pelargoniums of southern Africa. Purnell, Cape Town, 51 pp.

  16. Van der Walt, J.J.A. & Vorster, P.J. (1981) Pelargoniums of southern Africa, Vol. 2. Juta, Johannesburg, Cape Town, 149 pp.