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Scientific Name | Syncolostemon rugosifolius (M.Ashby) D.F.Otieno |
Higher Classification | Dicotyledons |
Family | LAMIACEAE |
Synonyms | Hemizygia rugosifolia M.Ashby |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2019/03/29 |
Assessor(s) | L. von Staden |
Justification | A very rare species, known from two locations, and potentially threatened by competition from alien invasive plants and overgrazing at one of these. It therefore qualifies as Vulnerable under criterion D. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Limpopo, Mpumalanga |
Range | This species occurs in the Limpopo Drakensberg Escarpment, from the Downs southwards to the northern end of the Blyde River Canyon, Mpumalanga. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Northern Escarpment Afromontane Fynbos, Northern Mistbelt Forest |
Description | Plants grow in forest margins, riverbanks and sandstone outcrops. |
Threats |
| The subpopulation at Lekgalameetse Nature Reserve is potentially threatened by competition from alien invasive plants, as well as habitat degradation due to livestock grazing grasslands inside the reserve. The subpopulation at Blyde River Canyon is not threatened. |
Population |
This species is known from only two subpopulations, and is extremely rare in the wild (Otieno 2004).
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Syncolostemon rugosifolius (M.Ashby) D.F.Otieno | VU D2 | 2020.1 | | Syncolostemon rugosifolius (M.Ashby) D.F.Otieno | Rare | Raimondo et al. (2009) | | Hemizygia rugosifolia M.Ashby | Insufficiently Known | Hilton-Taylor (1996) | | Syncolostemon rugosifolius (M.Ashby) D.F.Otieno | Insufficiently Known | Hilton-Taylor (1996) | |
Bibliography |
Codd, L.E. 1976. The genus Syncolostemon (Lamiaceae). Bothalia 12(1):21-27.
Codd, L.E. 1985. Lamiaceae. In: O.A. Leistner (ed). Flora of Southern Africa 28 Part 4:1-240. Botanical Research Institute, Pretoria.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Otieno, D.F. 2004. Taxonomic delimitation, phylogeny and biogeography of Hemizygia and Syncolostemon (Ocimeae - Labiatae). Unpublished PhD, University of the Witwatersrand, Johannesburg.
Otieno, D.F., Balkwill, K., Paton, A.J. and Savolainen, V. 2006. A reassessment of Hemizygia and Syncolostemon (Ocimeae-Lamiaceae). Taxon 55:941-958.
Raimondo, D., von Staden, L., Foden, W., Victor, J.E., Helme, N.A., Turner, R.C., Kamundi, D.A. and Manyama, P.A. 2009. Red List of South African Plants. Strelitzia 25. South African National Biodiversity Institute, Pretoria.
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Citation |
| von Staden, L. 2019. Syncolostemon rugosifolius (M.Ashby) D.F.Otieno. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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