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Scientific Name | Crassula susannae Rauh & Friedrich |
Higher Classification | Dicotyledons |
Family | CRASSULACEAE |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2018/05/24 |
Assessor(s) | D. Raimondo, J.E. Victor & P.M. Burgoyne |
Justification | Crassula susannae is known from one location, with an extent of occurrence (EOO) of 9 km². It has lost habitat to quarrying in the past. Quarrying and collecting for the specialist horticulture succulent trade remain potential threats. It is therefore listed as Vulnerable under criterion D. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | This species is endemic to South Africa, and is found in Namaqualand, west of Soebatsfontein. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Riethuis-Wallekraal Quartz Vygieveld, Namaqualand Sand Fynbos |
Description | It occurs on quartz gravel slopes and flats. |
Threats |
| Crassula susannae is highly sought after by collectors. |
Population |
There is no information available on the population of this species.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Crassula susannae Rauh & Friedrich | VU D2 | Raimondo et al. (2009) | | Crassula susannae Rauh & Friedrich | Indeterminate | Hilton-Taylor (1996) | | Crassula susannae Rauh & Friedrich | Indeterminate | Hall et al. (1980) | |
Bibliography |
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.
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 |
| Raimondo, D., Victor, J.E. & Burgoyne, P.M. 2018. Crassula susannae Rauh & Friedrich. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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