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Scientific Name | Disa maculomarronina McMurtry |
Higher Classification | Monocotyledons |
Family | ORCHIDACEAE |
Synonyms | Disa versicolor Rchb.f. x D. hircicornis Rchb.f. |
National Status |
Status and Criteria | Near Threatened B2ab(iii) |
Assessment Date | 2005/07/13 |
Assessor(s) | J.E. Victor, D. McMurtry, L. Grobler & S. Burns |
Justification | Specific to a specialized habitat (AOO < 10 km²), and known from less than 10 locations, but suspected to occur at 10-15 locations. Declining due to afforestation, and trampling and harvesting by tourists. |
Distribution |
Endemism | South African endemic |
Provincial distribution | KwaZulu-Natal, Mpumalanga |
Range | Wakkerstroom and the Mpumalanga Escarpment around Graskop. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Steenkampsberg Montane Grassland, Northern Escarpment Quartzite Sourveld, Paulpietersburg Moist Grassland, Wakkerstroom Montane Grassland |
Description | Swamps, montane grassland on the edges of Black Reef Quartzite, 1500-1700 m. |
Threats |
| Threatened by afforestation and increasing tourist activity. |
Population |
Subpopulations are generally small. Three surveyed subpopulations consists of 100-200 plants, 20 plants and 50 plants respectively.
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Population trend | Decreasing |
Notes |
| Discovered in December 1977 near Graskop, Mpumalanga by Doug McMurtry. Linder (1981), in his revision of the genus recorded the taxon as a natural hybrid between Disa versicolor and the very rare Disa hircicornis. McMurtry published his argument as to why it should be considered a unique species in the South African Orchid Journal in 1984 (McMurtry 1984). Linder and Kurzweil (1999) still claim the hybrid-hypothesis, but affirms it as a species as a "best current solution, pending further examination of more collections". |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Disa maculomarronina McMurtry | NT B2ab(iii) | Raimondo et al. (2009) | | Disa maculomarronina McMurtry | VU D2 | Victor (2002) | | Disa maculomarronina McMurtry | Lower Risk - Near Threatened | Scott-Shaw (1999) | | Disa maculomarronina McMurtry | 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. 1981. Taxonomic studies in the Disinae. III. A revision of Disa Berg. excluding sect. Micranthae Lindl. Contributions from the Bolus Herbarium 9:1-370.
Linder, H.P. and Kurzweil, H. 1999. Orchids of southern Africa. A.A. Balkema, Rotterdam.
McMurtry, D. 1984. A new Transvaal Disa species. South African Orchid Journal 15(3):90-92.
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.
Scott-Shaw, C.R. 1999. Rare and threatened plants of KwaZulu-Natal and neighbouring regions. KwaZulu-Natal Nature Conservation Service, Pietermaritzburg.
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 |
| Victor, J.E., McMurtry, D., Grobler, L. & Burns, S. 2005. Disa maculomarronina McMurtry. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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