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Scientific Name | Walleria gracilis (Salisb.) S.Carter |
Higher Classification | Monocotyledons |
Family | TECOPHILAEACEAE |
Synonyms | Androsyne gracilis Salisb., Walleria armata Schltr. & K.Krause |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2015/05/22 |
Assessor(s) | L. von Staden |
Justification | A localized species (EOO 314 km²), known from five locations and potentially threatened by habitat loss to infrastructure development and agriculture. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Olifants River Valley between Klawer and Clanwilliam. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Doringrivier Quartzite Karoo, Klawer Sandy Shrubland |
Description | Deep sandy soils among sandstone outcrops. |
Threats |
| There are no immediate threats to this species, but it is potentially threatened by habitat loss and degradation due to infrastructure development and agricultural expansion across its range. |
Population |
A localized, but locally common species. It is known from two isolated subpopulations, one to the east of Klawer towards the foot of the Gifberg, and the other in the Olifants River Valley south of Clanwilliam.
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Population trend | Stable |
Notes |
| This species is known from a single collection from near Kubus in the Richtersveld, dating from 1925. This locality is 350 km north of the nearest other populations of Walleria gracilis, and this species has not been recollected in the Richtersveld, nor in the intervening area. The specimen was made from material cultivated in Cape Town, and the possibility that the locality has been confused must be considered until the species is rediscovered in the Richtersveld (Manning and Goldblatt 2012). |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Walleria gracilis (Salisb.) S.Carter | VU D2 | 2015.1 | | Walleria gracilis (Salisb.) S.Carter | Rare | Raimondo et al. (2009) | | Walleria gracilis (Salisb.) S.Carter | Rare | Hilton-Taylor (1996) | |
Bibliography |
Carter, S. 1962. Revision of Walleria and Cyanastrum (Tecophilaeaceae). Kew Bulletin 16(2):185-195.
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.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Manning, J.C. and Goldblatt, P. 2012. A revision of Tecophilaeaceae subfam. Tecophilaeoideae in Africa. Bothalia 42(1):21-41.
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 |
| von Staden, L. 2015. Walleria gracilis (Salisb.) S.Carter. National Assessment: Red List of South African Plants version . Accessed on 2025/07/27 |
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