Taxonomy
Scientific Name
Conophytum chrisolum S.A.Hammer
Higher Classification
Dicotyledons
Family
AIZOACEAE
National Status
Status and Criteria
Critically Endangered B1ab(v)+2ab(v)
Assessment Date
2020/02/11
Assessor(s)
A.J. Young & D. Raimondo
Justification
A highly localised species known from a single site in the Namaqualand region of South Africa. While occupying a tiny area of under 1 km² it has according to the IUCN Red List guidelines an extent of occurrence (EOO) and an area of occupancy (AOO) of 4 km². The entire population was estimated to be between 500-1000 individuals in 2015. There is an ongoing decline in the number of mature individuals as a result of illegal collection to supply the growing demand for Conophytum plants amongst specialist succulent collectors.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape
Range
Namaqualand west of Steinkopf, in the Northern Cape Province of South Africa.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Namaqualand Heuweltjieveld
Description
Pans of thin quartz scree.
Threats
The small, highly localised, population of slow-growing plants has been subject to illegal collection in recent years, with high prices being paid for plants. Collection is causing ongoing decline to the population and is considered a major extinction threat to this species.
Population

This species is an extremely localized habitat specialist, known from a single subpopulation of about 500-1000 individuals. There is ongoing decline due to illegal collection.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Conophytum chrisolum S.A.HammerVU D1+22017.1
Conophytum chrisolum S.A.HammerCritically Rare Raimondo et al. (2009)
Bibliography

Hammer, S. 1997. New chrisogenic species of Conophytum from the Richtersveld. Cactus and Succulent Journal 69(3):127-131.


Hammer, S. 2002. Dumpling and his wife: New view of the genus Conophytum. EAE Creative Colour, Norwich.


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.


Snijman, D.A. 2013. Plants of the Greater Cape Floristic Region 2: The extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria.


Citation
Young, A.J. & Raimondo, D. 2020. Conophytum chrisolum S.A.Hammer. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/07/10

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Distribution map

© A.J. Young


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