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Scientific Name | Pterygodium cruciferum Sond. |
Higher Classification | Monocotyledons |
Family | ORCHIDACEAE |
National Status |
Status and Criteria | Endangered B1ab(i,ii,iii,iv,v) |
Assessment Date | 2005/09/02 |
Assessor(s) | C.A. Pauw, I. Ebrahim, L. von Staden & J.E. Victor |
Justification | EOO 2005-6604 km², known from four sites. It has lost the majority of its habitat to urban expansion on the Cape Flats and crop cultivation around Darling and Bredasdorp. Declining due to eutrophication and alien plant invasion. There is a complete lack of reproduction at one of the locations due to pollinator loss. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Darling to Bredasdorp. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swartland Shale Renosterveld, Breede Shale Renosterveld, Swartland Granite Renosterveld, Overberg Sandstone Fynbos, Peninsula Granite Fynbos, Hangklip Sand Fynbos, Cape Flats Sand Fynbos |
Description | Edges of lowland wetlands, in clay or sandy soils, renosterveld or fynbos, 10-240 m. |
Threats |
| Invasive Alien Species (direct effects), Habitat loss, Changes in native species dynamics, Harvesting [gathering], Habitat degradation |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Pterygodium cruciferum Sond. | EN B1ab(i,ii,iii,iv,v) | Raimondo et al. (2009) | | Pterygodium cruciferum Sond. | EN A1c | Victor (2002) | | Pterygodium cruciferum Sond. | Endangered | Hilton-Taylor (1996) | |
Bibliography |
Goldblatt, P. and Manning, J.C. 2000. Cape Plants: A conspectus of the Cape Flora of South Africa. Strelitzia 9. National Botanical Institute, Cape Town.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Liltved, W.R. and Johnson, S.D. Unpublished. The Cape Orchids - Wild orchids of the Cape Floral Kingdom.
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 |
| Pauw, C.A., Ebrahim, I., von Staden, L. & Victor, J.E. 2005. Pterygodium cruciferum Sond. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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