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Scientific Name | Crassula subacaulis Schönland & Baker f. subsp. subacaulis |
Higher Classification | Dicotyledons |
Family | CRASSULACEAE |
Synonyms | Crassula subacaulis Schönland & Baker f. |
National Status |
Status and Criteria | Vulnerable B1ab(iii,v)+2ab(iii,v) |
Assessment Date | 2020/11/24 |
Assessor(s) | L. von Staden |
Justification | Crassula subacaulis subsp. subacaulis is a range-restricted subspecies, with an extent of occurrence (EOO) of 2191 km², occurring at five to 10 locations and declining due to ongoing habitat degradation. It is listed as Vulnerable under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | This species is endemic to South Africa, and is found in Richtersveld, from Helskloof to Steinkopf. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Kosiesberg Succulent Shrubland, Central Richtersveld Mountain Shrubland, Namaqualand Blomveld, Western Gariep Hills Desert |
Description | It occurs on lower gravel slopes. |
Threats |
| Severe overgrazing is causing a loss of vegetation cover and erosion across this subspecies' range. It is not grazed, but is dependent on shelter provided by larger shrubs, and plants are dying in areas where shrub cover has been reduced. A historical record indicates that this subspecies occurred near Swartwater, where it is now quite possibly locally extinct due to habitat loss to mining. |
Population |
There is no information available on the population of this species.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Crassula subacaulis Schönland & Baker f. subsp. subacaulis | VU D2 | Raimondo et al. (2009) | | Crassula subacaulis Schönland & Baker f. subsp. subacaulis | Rare | Hilton-Taylor (1996) | |
Bibliography |
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.
Tölken, H.R. 1979. CRASSULACEAE: Three new taxa and a new combination. Bothalia 12(4):633-634.
Tölken, H.R. 1985. Crassulaceae. In: O.A. Leistner (ed). Flora of southern Africa 14,1:1-244. Botanical Research Institute, Pretoria.
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Citation |
| von Staden, L. 2020. Crassula subacaulis Schönland & Baker f. subsp. subacaulis. National Assessment: Red List of South African Plants version . Accessed on 2025/05/31 |
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