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Scientific Name | Lachenalia ventricosa Schltr. ex W.F.Barker |
Higher Classification | Monocotyledons |
Family | HYACINTHACEAE |
National Status |
Status and Criteria | Vulnerable B1ab(ii,iii,iv,v) |
Assessment Date | 2019/11/28 |
Assessor(s) | G.D. Duncan & H. Mtshali |
Justification | Lachenalia ventricosa is a rare and poorly known species, with an extent of occurrence (EOO) of 1334 km². It is known from fewer than 10 locations, and is declining due to ongoing habitat loss to agricultural expansion. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape, Western Cape |
Range | This species occurs from the Nardous Mountain and northern Cederberg to the Biedouw Valley, and southwards to the Swartruggens Mountains bordering the Tanqua Karoo. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swartruggens Quartzite Karoo, Nardouw Sandstone Fynbos, Swartruggens Quartzite Fynbos, Cederberg Sandstone Fynbos, Graafwater Sandstone Fynbos, Bokkeveld Sandstone Fynbos |
Description | It occurs in deep white sandy soils on mountain plateaux. |
Threats |
| It is threatened by ongoing habitat loss to rooibos tea cultivation on the Nardous Mountains (Duncan 2012). In the Olifants River Valley it is also threatened by habitat loss to fruit orchards. |
Population |
Lachenalia ventricosa is a rare and poorly known species, and was last observed in 2007 in the Swartruggens area. Historical collections are old and without precise locality descriptions, making an estimate of the number of locations difficult. There are likely to be at least five, but the exact number is not known. Field surveys are urgently needed to gain a better understanding of the size and structure of the population. A continuing decline is inferred from ongoing habitat loss.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Lachenalia ventricosa Schltr. ex W.F.Barker | Least Concern | Raimondo et al. (2009) | |
Bibliography |
Duncan, G.D. 2012. The genus Lachenalia. Kew Publishing, Royal Botanic Gardens, Kew.
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.
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 |
| Duncan, G.D. & Mtshali, H. 2019. Lachenalia ventricosa Schltr. ex W.F.Barker. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2023/12/03 |
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