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Scientific Name | Schizochilus crenulatus H.P.Linder |
Higher Classification | Monocotyledons |
Family | ORCHIDACEAE |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2011/09/30 |
Assessor(s) | L. von Staden, D. McMurtry, L. Grobler & S. Burns |
Justification | EOO 84 km², AOO <20 km². A range-restricted habitat specialist potentially threatened by mining. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Mpumalanga |
Range | Mariepskop to Graskop. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Northern Escarpment Quartzite Sourveld |
Description | Edges of flat Black Reef Quartzite rock flushes, in damp to wet conditions, and often in moss, substrate rarely deeper than 10 mm. |
Threats |
| Habitat loss or degradation as a result of the establishment of timber plantations has probably caused unknown declines in the past. It is however unlikely that the specific habitat of this species - shallow rocky soils at the edges of streams are to be directly transformed by pine plantations, but plantations may result in degradation on the habitat.
Mining is a potential threat - a number of mining applications are under review for mining around Graskop. Parts of the habitat of this species which is protected in the provincial Blyde River Canyon Nature Reserve is under land claim (M. Lotter pers. comm.) and it is not certain whether the claimants would preserve the area as a nature reserve. |
Population |
Subpopulations are generally large, up to 200 plants. However, there are probably very few subpopulations, as the highly specialized habitat only exist at the headwaters of streams. (Linder 1980). However, according to personal observations of Lourens Grobler, this species is plentiful and occurs wherever there is suitable habitat.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Schizochilus crenulatus H.P.Linder | VU D2 | Raimondo et al. (2009) | | Schizochilus crenulatus H.P.Linder | Lower Risk - Near Threatened | Victor (2002) | | Schizochilus crenulatus H.P.Linder | Vulnerable | Hilton-Taylor (1996) | |
Bibliography |
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Linder, H.P. 1980. An annotated revision of the genus Schizochilus Sond. (Orchidaceae). Journal of South African Botany 46(4):379-434.
Linder, H.P. and Kurzweil, H. 1999. Orchids of southern Africa. A.A. Balkema, Rotterdam.
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.
Victor, J.E. 2002. South Africa. In: J.S. Golding (ed), Southern African plant Red Data Lists. Southern African Botanical Diversity Network Report 14 (pp. 93-120), SABONET, Pretoria.
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Citation |
| von Staden, L., McMurtry, D., Grobler, L. & Burns, S. 2011. Schizochilus crenulatus H.P.Linder. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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