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Scientific Name | Conophytum roodiae N.E.Br. subsp. cylindratum (Schwantes) T.Smale |
Higher Classification | Dicotyledons |
Family | AIZOACEAE |
Synonyms | Conophytum cylindratum Schwantes, Conophytum cylindratum Schwantes var. primosii (Lavis) Rawé |
National Status |
Status and Criteria | Vulnerable B1ab(v)+2ab(v) |
Assessment Date | 2020/02/06 |
Assessor(s) | A.J. Young & D. Raimondo |
Justification | A range-restricted taxon endemic to the Namaqualand region of the South Africa's Northern Cape Province. It has an extent of occurrence (EOO) of 230 km² and an area of occupancy (AOO) of 32 km². Known from six locations it is experiencing ongoing loss of mature individuals as a result of collecting for the succulent horticultural trade. It therefore qualifies as Vulnerable under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | Namaqualand region of the Northern Cape, South Africa occurring between Kamieskroon and Springbok. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Succulent Karoo |
Description | Cracks in eroding plates and under rock lips on granite domes, also at the edges of shallow grit pans. |
Threats |
| There has been a significant increase in demand for Conophytums coming from Asian countries since March 2019. This taxon is popular in cultivation and some subpopulations are declining due to illegal collection. |
Population |
This taxon has a restricted range, but is locally abundant. The population size is estimated to be at least 5000 mature individuals. Subpopulation numbers are decreasing continuously as a result of illegal harvesting.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Conophytum roodiae N.E.Br. subsp. cylindratum (Schwantes) T.Smale | Rare | 2017.1 | | Conophytum roodiae N.E.Br. subsp. cylindratum (Schwantes) T.Smale | Least Concern | Raimondo et al. (2009) | |
Bibliography |
Hammer, S. 2002. Dumpling and his wife: New view of the genus Conophytum. EAE Creative Colour, Norwich.
Hammer, S.A. 1993. The genus Conophytum: A conograph. Succulent Plant Publications, 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.
Smale, T. 2000. Conophytum roodiae and its relatives. British Cactus and Succulent Journal 18(2):101-107.
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Citation |
| Young, A.J. & Raimondo, D. 2020. Conophytum roodiae N.E.Br. subsp. cylindratum (Schwantes) T.Smale. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2021/02/28 |
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