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Scientific Name | Drimia barkerae Oberm. ex J.C.Manning & Goldblatt |
Higher Classification | Monocotyledons |
Family | HYACINTHACEAE |
National Status |
Status and Criteria | Endangered B1ab(ii,iii,iv,v) |
Assessment Date | 2011/10/20 |
Assessor(s) | R.C. Turner |
Justification | Endemic to the flats surrounding Piketberg, between the foot of Piekenierskloof Pass and Redelinghuys (EOO 638 km²). It is known from fewer than five locations and continues to decline due to ongoing agricultural expansion, and livestock grazing. Much of this species' habitat has been irreversibly transformed, and this loss is ongoing. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Redelinghuys to Piketberg and Eendekuil. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swartland Shale Renosterveld |
Description | Shale slopes and shallow, loamy soils fringing fine clays and quartzite pebble fields. |
Threats |
| Almost 90% of the lowlands between Piketberg and the Piekenierskloof Pass are transformed to crop fields, and only small fragments remain. Further north towards Redelinghuys habitat loss to potato and rooibos tea cultivation is rapidly continuing. |
Population |
Plants are localized to the edges of quartzite patches, but can be locally common in suitable habitat.
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Population trend | Decreasing |
Conservation |
| Not currently conserved in any formally protected area. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Drimia barkerae Oberm. ex J.C.Manning & Goldblatt | EN B1ab(ii,iii,iv,v) | 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.
Goldblatt, P., Manning, J.C. and Snijman, D. 2005. Cape Plants: corrections and additions to the flora. 1. Bothalia 35(1):35-46.
Manning, J.C. and Goldblatt, P. 2003. A new species and new combination in Drimia (Urgineoideae). Bothalia 33(1):109-111.
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 |
| Turner, R.C. 2011. Drimia barkerae Oberm. ex J.C.Manning & Goldblatt. National Assessment: Red List of South African Plants version . Accessed on 2025/01/18 |
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