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Scientific Name | Oberonia disticha (Lam.) Schltr. |
Higher Classification | Monocotyledons |
Family | ORCHIDACEAE |
Synonyms | Epidendrum distichum Lam. |
National Status |
Status and Criteria | Critically Endangered B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) |
Assessment Date | 2007/03/18 |
Assessor(s) | J.E. Victor, S. Krynauw, P.J.H. Hurter & L. von Staden |
Justification | Known historically from three locations in South Africa, with a disjunct distribution in Limpopo and Mpumalanga provinces. Subpopulations in Mpumalanga went locally extinct when the habitat was transformed for agriculture. Now possibly confined only to a small area in Limpopo Province (EOO estimated 95 km²). Recent searches have failed to locate individuals at one of the two remaining locations. Searches for and monitoring of remaining suitable habitat is required to establish the population status. However, since there is still habitat available in fairly inaccessible areas around the known locations in Limpopo Province, it is likely that at least one location still exist, and this species is not yet listed as extinct in South Africa. |
Distribution |
Endemism | Not endemic to South Africa |
Provincial distribution | Limpopo |
Range | Isolated sites in South Africa including the Wolkberg Mountains and near Nelspruit. Widespread in tropical Africa and also occurs on Indian Ocean Islands (Madagascar, Reunion, Mauritius and Comoros). |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Tzaneen Sour Bushveld |
Description | Epiphytic, on tree trunks in evergreen forest or high rainfall Brachystegia woodland. |
Threats |
| Harvesting [gathering] |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Oberonia disticha (Lam.) Schltr. | CR B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) | Raimondo et al. (2009) | | Oberonia disticha (Lam.) Schltr. | Data Deficient | Victor (2002) | | Oberonia disticha (Lam.) Schltr. | Not Threatened | Hilton-Taylor (1996) | | Oberonia disticha (Lam.) Schltr. | Uncertain | Hall et al. (1980) | |
Bibliography |
Hall, A.V., De Winter, M., De Winter, B. and Van Oosterhout, S.A.M. 1980. Threatened plants of southern Africa. South African National Scienctific Programmes Report 45. CSIR, Pretoria.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
La Croix, I. and Cribb, P.J. 1995. Orchidaceae. In: G.V. Pope (ed). Flora Zambesiaca 11 (Part 1):1-320. Flora Zambesiaca Managing Committee, London.
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 |
| Victor, J.E., Krynauw, S., Hurter, P.J.H. & von Staden, L. 2007. Oberonia disticha (Lam.) Schltr. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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