|
Scientific Name | Wiborgiella sessilifolia (Eckl. & Zeyh.) Boatwr. & B.-E.van Wyk |
Higher Classification | Dicotyledons |
Family | FABACEAE |
Synonyms | Acanthobotrya sessilifolia Eckl. & Zeyh., Lebeckia sessilifolia (Eckl. & Zeyh.) Benth., Wiborgia grandiflora E.Mey. |
National Status |
Status and Criteria | Near Threatened B1ab(ii,iii,iv,v)+2ab(ii,iii,iv,v) |
Assessment Date | 2021/05/05 |
Assessor(s) | L. von Staden |
Justification | This Western Cape endemic has a restricted range, with extent of occurrence (EOO) of 2977 km². This species is declining due to habitat loss to coastal development and alien plant invasion. It is, however, estimated to remain at between 10 and 20 locations and is not severely fragmented. It is therefore assessed as Near Threatened under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is endemic to the southern Western Cape province, from Bredasdorp to Stilbaai. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Canca Limestone Fynbos, De Hoop Limestone Fynbos, Agulhas Limestone Fynbos, Hartenbos Dune Thicket |
Description | It occurs on south or southwest-facing limestone slopes. |
Threats |
| At least 3% of this species' limestone and strandveld fynbos has been lost to coastal development and agriculture between Struisbaai and Still Bay. There is slow, sporadic ongoing loss, but more concerning is the fact that this species' habitat is densely infested with alien invasive plants that are outcompeting native species. |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Lebeckia sessilifolia (Eckl. & Zeyh.) Benth. | Least Concern | Raimondo et al. (2009) | |
Bibliography |
Boatwright, J.S., Tilney, P.M. and Van Wyk, B.E. 2010. Taxonomy of Wiborgiella (Crotalarieae, Fabaceae), a genus endemic to the greater Cape Region of South Africa. Systematic Botany 35(2):325-340.
Dahlgren, R. 1975. Studies on Wiborgia Thunb. and related species of Lebeckia Thunb. (Fabaceae). Opera Botanica 38:1-83.
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.
|
Citation |
| von Staden, L. 2021. Wiborgiella sessilifolia (Eckl. & Zeyh.) Boatwr. & B.-E.van Wyk. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
Comment on this assessment
