|
Scientific Name | Lachenalia polyphylla Baker |
Higher Classification | Monocotyledons |
Family | HYACINTHACEAE |
National Status |
Status and Criteria | Endangered B1ab(ii,iii,iv,v)+2ab(ii,iii,iv,v) |
Assessment Date | 2019/11/15 |
Assessor(s) | D. Raimondo & I. Ebrahim |
Justification | This species has an extent of occurrence (EOO) of 1723 km² and an area of occupancy (AOO) of 52 km². It is known from less than 10 severely fragmented subpopulations and has lost habitat to wheat cultivation and is declining due to further crop cultivation, expansion of low cost housing, and alien plant invasion. It therefore qualifies for listing as Endangered under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species occurs from Piketberg to Tulbagh. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swartland Shale Renosterveld, Breede Shale Renosterveld, Swartland Granite Renosterveld, Swartland Alluvium Fynbos, Breede Alluvium Fynbos |
Description | Plants grow in moist, open, clay gravel flats. |
Threats |
| This species has suffered extensive habitat loss to agriculture, and loss continues. A subpopulation that formerly occurred on the Gouda commonage was lost to urban expansion (G. Duncan pers. obs.). Remaining subpopulations at Gouda, Saron and Tulbagh are threatened by competition from alien invasive plants. |
Population |
Subpopulations are very small and isolated. At least one subpopulation known through historical records is now extinct, and a continuing decline is inferred from ongoing habitat loss and degradation.
|
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Lachenalia polyphylla Baker | EN B1ab(ii,iii,iv,v) | Raimondo et al. (2009) | | Lachenalia polyphylla Baker | Endangered | Hilton-Taylor (1996) | | Lachenalia polyphylla Baker | Vulnerable | Hall et al. (1980) | |
Bibliography |
Duncan, G. 1992. Endangered monocots rediscovered in the Boland. Veld & Flora 78(3):72-73.
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.
Hall, A.V., De Winter, M., De Winter, B. and Van Oosterhout, S.A.M. 1980. Threatened plants of southern Africa. South African National Scienctific Programmes Report 45. CSIR, Pretoria.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
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.
|
Citation |
| Raimondo, D. & Ebrahim, I. 2019. Lachenalia polyphylla Baker. National Assessment: Red List of South African Plants version . Accessed on 2025/04/23 |
Comment on this assessment
