Scientific Name
Conophytum concavum L.Bolus
Higher Classification
National Status
Status and Criteria
Vulnerable B1ab(v)+2ab(v)
Assessment Date
A.J. Young & D. Raimondo
A range-restricted species with an extent of occurrence (EOO) of 54 km² and an area of occupancy (AOO) of 24km². Six threat based locations are declining as a result of illegal collecting for the specialist succulent horticultural trade.
South African endemic
Provincial distribution
Northern Cape
information redacted, contact SANBI
Habitat and Ecology
Major system
Major habitats
Succulent Karoo
Saline quartz flats.
This range-restricted species has recently subject to illegal collection, and there has been a recent significant increase in illegal collecting linked with a surge in demand for these plants facilitated by online platforms such as eBay.

This species is locally abundant in suitable habitat, with subpopulations consisting of more than 1000 individuals. The population is currently declining due to illegal collecting.

Population trend
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Conophytum concavum L.BolusRare Raimondo et al. (2009)
Conophytum concavum L.BolusLower Risk - Least Concern Victor (2002)
Conophytum concavum L.BolusRare Hilton-Taylor (1996)

Bolus, H.M.L. 1936-1958. Notes on Mesembryanthemum and allied genera Part III. University of Cape Town, Bolus Herbarium, Cape Town.

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.

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.

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

Victor, J.E. 2002. South Africa. In: J.S. Golding (ed), Southern African plant Red Data Lists. Southern African Botanical Diversity Network Report 14 (pp. 93-120), SABONET, Pretoria.

Young, A.J. & Raimondo, D. 2020. Conophytum concavum L.Bolus. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2023/12/08

Comment on this assessment Comment on this assessment
Distribution map

© A.J. Young

Search for images of Conophytum concavum on iNaturalist