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Scientific Name | Habenaria mossii (G.Will.) J.C.Manning |
Higher Classification | Monocotyledons |
Family | ORCHIDACEAE |
Synonyms | Habenaria lithophila Schltr. subsp. mossii G.Will. |
National Status |
Status and Criteria | Endangered C2a(i); D |
Assessment Date | 2005/08/01 |
Assessor(s) | M.F. Pfab & J.E. Victor |
Justification | Surveys of remaining habitat within Gauteng Province revealed that there are only about 230 mature individuals. These occur as six scattered subpopulations, the largest of which only has 70-80 mature individuals, but there are generally fewer than 40 mature individuals per subpopulation. There is a continuing decline due to the rapid urban expansion. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Gauteng, North West |
Range | Johannesburg, Pretoria and Krugersdorp. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Andesite Mountain Bushveld, Carletonville Dolomite Grassland |
Description | Open grassland on dolomite or in black, sandy soil. |
Threats |
| Habitat destruction due to spreading urbanization in Gauteng is causing ongoing decline at Irene and open areas around Johannesburg. A potential future threat to all rural areas, e.g. Sterkfontein, that are not in reserves. |
Population |
1. Uitkomst 61-70, surveyed
2. Irene and Rietvlei Dam (very close together, can be considered one subpopulation) 70-80, Irene estimated 35-40 individuals, Rietvlei Dam surveyed 35-40 individuals
3. Thorntree Kloof, 15 individuals estimated.
4. Sterkfontein 35-40, estimated.
5. Linksfield Ridge, 12-30 individuals, estimated.
6. Suikerbosrand, 3 individuals, surveyed.
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Population trend | Decreasing |
Conservation |
| It is conserved in a number of Heritage sites and nature reserve. It occurs in Tweedsmere Ranch Natural Heritage site and Nature Reserve, Rietvlei Dam municipal Nature Reserve and the Suikerbosrand Nature Reserve. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Habenaria mossii (G.Will.) J.C.Manning | EN C2a(i); D | Raimondo et al. (2009) | | Habenaria mossii (G.Will.) J.C.Manning | EN C1+2a(i) | Pfab and Victor (2002) | | Habenaria mossii (G.Will.) J.C.Manning | EN C1C2a | Victor (2002) | | Habenaria mossii (G.Will.) J.C.Manning | Endangered | Hilton-Taylor (1997) | |
Bibliography |
Hilton-Taylor, C. 1997. Red Data List of southern African plants. 2. Corrections and additions. Bothalia 27(2):195-209.
Linder, H.P. and Kurzweil, H. 1999. Orchids of southern Africa. A.A. Balkema, Rotterdam.
Manning, J.C. 1989. New combinations and a new species in Habenaria (Orchidaceae) from South Africa. South African Journal of Botany 55(2):192-195.
Pfab, M.F. and Victor, J.E. 2002. Threatened plants of Gauteng, South Africa. South African Journal of Botany 68:370-375.
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.
Williamson, G. 1983. Studies in Orchidaceae from southern Africa. Journal of Botany 49(4):445-449.
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Citation |
| Pfab, M.F. & Victor, J.E. 2005. Habenaria mossii (G.Will.) J.C.Manning. National Assessment: Red List of South African Plants version . Accessed on 2025/05/13 |
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