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Scientific Name | Drimia involuta (J.C.Manning & Snijman) J.C.Manning & Goldblatt |
Higher Classification | Monocotyledons |
Family | HYACINTHACEAE |
Synonyms | Rhadamanthus involutus J.C.Manning & Snijman |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2011/10/20 |
Assessor(s) | D. Raimondo, R.C. Turner & D.A. Snijman |
Justification | EOO and AOO <2 km², two known subpopulations are potentially threatened by the effects of habitat fragmentation such as altered fire regimes and loss of pollinators. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | Bokkeveld Escarpment west of Nieuwoudtville. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Bokkeveld Sandstone Fynbos |
Description | Seasonally moist, loamy soil on exposed sandstone pavements. |
Threats |
| Surrounding deeper sandy soils are extensively and continuously transformed for rooibos tea cultivation. However, as this species occurs on sandstone pavements unsuitable for cultivation, it is unlikely to be affected by habitat loss, but may be negatively impacted by the effects of fragmentation of the natural vegetation such as altered fire regimes and loss of pollinators. |
Population |
A rare and localized habitat specialist. Two subpopulations are known, consisting of a few hundred plants (Snijman et al. 1999), but the population size has not been estimated. Plants are not suspected to be declining.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Drimia involuta (J.C.Manning & Snijman) J.C.Manning & Goldblatt | VU D2 | 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.
Manning, J., Goldblatt, P. and Snijman, D. 2002. The color encyclopedia of Cape bulbs. Timber Press, Portland/Cambridge.
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.
Snijman, D.A., Manning, J.C. and Goldblatt, P. 1999. A new Rhadamanthus species (Hyacinthaceae) from the northwestern Cape, South Africa. Novon 9(1):111-113.
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Citation |
| Raimondo, D., Turner, R.C. & Snijman, D.A. 2011. Drimia involuta (J.C.Manning & Snijman) J.C.Manning & Goldblatt. National Assessment: Red List of South African Plants version . Accessed on 2025/05/14 |
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