Abstract
This article attempts to resolve the long-standing confusion surrounding the identities of Pavetta hirtiflora and Pavetta zoutpansbergensis, both treated as synonyms of Pavetta trichardtensis. It is proposed that the P. trichardtensis complex be split into two varieties. Extensive field work and investigation of herbarium specimens supported these two varieties as distinct and occurring on the Blouberg, Soutpansberg and Wolkberg ranges. The typical pubescent variety occurs on the Soutpansberg through to the Wolkberg and the glabrous variety occurs on the Soutpansberg, Blouberg and possibly Houtbosch (Woodbush).
References
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Boon, R.G.C., Jordaan, M. & van Wyk, A.E. (2020) A new species of Combretum sect. Ciliatipetala (Combretaceae) from South Africa. Phytotaxa 434 (1): 1–12. https://doi.org/10.11646/phytotaxa.434.1.1
Bremekamp, C.E.B. (1929) A revision of the South African species of Pavetta. Annals of the Transvaal Museum 13 (3): 182–213. https://hdl.handle.net/10520/AJA00411752_672
Bremekamp, C.E.B. (1933) New or otherwise noteworthy plants from the Northern Transvaal. Annals of the Transvaal Museum 15 (2): 233–264. https://hdl.handle.net/10520/AJA00411752_605
Bremekamp, C.E.B. (1934) A monograph of the genus Pavetta L.: Additions and Emendations. Repertorium Specierum Novarum Regni Vegetabilis (Fedde’s Repertorium) 37: 1–208.
Edwards, D. & Leistner, O.A. (1971) A degree reference system for citing biological records in southern Africa. Mitteilungen der Botanischen Staatssammlung München 10: 501–509.
Hahn, N. (2011) Refinement of the Soutpansberg Geomorphic Province, Limpopo, South Africa. Transactions of the Royal Society of South Africa 66 (1): 32–40. http://dx.doi.org/10.1080/0035919x.2011.566422
Hahn, N. (2017) Endemic flora of the Soutpansberg, Blouberg and Makgabeng. South African Journal of Botany 113: 324–336. http://dx.doi.org/10.1016/j.sajb.2017.09.006
IUCN Standards and Petitions Committee (2019) Guidelines for using the IUCN Red List categories and criteria. Version 14. Prepared by the Standards and Petitions Committee. Available from: http://www.iucnredlist.org/documents/RedListGuidelines.pdf (Accessed April 2021).
Jordaan, M. & Steyn, H.M. (2012) Rubiaceae. Taxonomic notes on Sericanthe andongensis and a new combination and status in Sericanthe from Limpopo, South Africa. Bothalia 42 (2): 204–209. https://doi.org/10.4102/abc.v42i2.21
JSTOR Global Plants (2021) Journal Storage, Global Plants [Online]. Available: http://plants.jstor.org/1147 (Accessed April 2021).
Kok, P.D.F. & Grobbelaar, N. (1984) Studies on Pavetta (Rubiaceae) II. Enumeration of species and synonyms. South African Journal of Botany 3 (3): 185–187. https://doi.org/10.1016/S0022-4618(16)30046-8
Partridge, T.C., Dollar, E.S.J., Moolman, J. & Dollar, L.H. (2010) The geomorphic provinces of South Africa, Lesotho and Swaziland: A physiographic subdivision for earth and environmental scientists. Transactions of the Royal Society of South Africa 65 (1): 1–47. https://doi.org/10.1080/00359191003652033
Richard, A. (1847) Tentamen Floræ Abyssinicæ seu Enumeratio Plantarum hucusque in plerisque Abyssiniæ provinciis detectarum et præcipue a beatis doctoribus Richard Quartin Dillon et Antonio Petit (annis 1838–1843) lectarum, vol. 1. Parisiis, Apud Arthus Bertrand, Editorem.
Schumann, K. (1900) Rubiaceae. Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 28 (3): 385–500.
Thiers, B. (2021 [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/science/ih/ (Accessed April 2021)