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Scientific Name | Disa purpurascens Bolus |
Higher Classification | Monocotyledons |
Family | ORCHIDACEAE |
Synonyms | Herschelia purpurascens (Bolus) Kraenzl., Herschelianthe purpurascens (Bolus) Rauschert |
National Status |
Status and Criteria | Near Threatened B1ab(ii,iii,v) |
Assessment Date | 2006/09/15 |
Assessor(s) | L. von Staden, B. Bytebier, W.R. Liltved, E.G.H. Oliver & T.A. Oliver |
Justification | EOO<10 800 km², known from 10-13 locations. There is a continuing decline due to agriculture, coastal development and alien plant invasion. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Cape Point to Stilbaai. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Overberg Dune Strandveld, Peninsula Sandstone Fynbos, Overberg Sandstone Fynbos, Elim Ferricrete Fynbos, Hangklip Sand Fynbos |
Description | Well drained, sandy or rocky flats, 0-300 m. Occasionally on south-facing slopes. |
Threats |
| Coastal development, which is spreading rapidly along the Cape south coast, is probably threatening this species, as with many other coastal lowland species. However, only one known location around Hermanus have likely been lost to development.
Agricultural activities have led to the fragmentation of populations into small remnant patches of natural vegetation around Bredasdorp. |
Population |
25 plants at Cape Point, 1 at Groot Hagelkraal, herbarium specimen notes generally indicate 'rare'.
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Population trend | Decreasing |
Conservation |
| It is conserved in Cape Point National Park and De Hoop Nature Reserve. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Disa purpurascens Bolus | NT B1ab(ii,iii,v) | Raimondo et al. (2009) | |
Bibliography |
Liltved, W.R. and Johnson, S.D. Unpublished. The Cape Orchids - Wild orchids of the Cape Floral Kingdom.
Linder, H.P. 1981. Taxonomic studies in the Disinae. VI. A revision of the genus Herschelia. Bothalia 13(3 & 4):365 - 388.
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.
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Citation |
| von Staden, L., Bytebier, B., Liltved, W.R., Oliver, E.G.H. & Oliver, T.A. 2006. Disa purpurascens Bolus. National Assessment: Red List of South African Plants version . Accessed on 2025/05/19 |
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