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Scientific Name | Pterygodium inversum (Thunb.) Sw. |
Higher Classification | Monocotyledons |
Family | ORCHIDACEAE |
Synonyms | Anochilus inversus (Thunb.) Rolfe, Ophrys inversa Thunb. |
National Status |
Status and Criteria | Endangered C2a(i) |
Assessment Date | 2006/10/25 |
Assessor(s) | L. von Staden |
Justification | This Renosterveld species has lost over 80% of its habitat in the past and is still declining across its range due to habitat loss to crop cultivation. Loss of pollinators and natural fire cycles as a result of habitat fragmentation also threaten this species. Subpopulations are generally small (largest known subpopulation ± 50 mature individuals), and total population estimated to be between 300 and 1000 mature individuals. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Gifberg to Bot River and Montagu Pass in the Outeniqua Mountains. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swartland Shale Renosterveld, Western Ruens Shale Renosterveld, Swartland Granite Renosterveld |
Description | Renosterveld. Well-drained clay, loam soils on lower slopes and hills, sometimes in rocky areas, 90-1000 m. |
Threats |
| Habitat loss, Habitat degradation, Changes in native species dynamics, Invasive Alien Species (direct effects) |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Pterygodium inversum (Thunb.) Sw. | EN C2a(i) | Raimondo et al. (2009) | |
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.
Liltved, W.R. and Johnson, S.D. Unpublished.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.
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Citation |
| von Staden, L. 2006. Pterygodium inversum (Thunb.) Sw. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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