Taxonomy
Scientific Name
Conophytum tantillum N.E.Br. subsp. amicorum S.A.Hammer & Barnhill
Higher Classification
Dicotyledons
Family
AIZOACEAE
National Status
Status and Criteria
Critically Endangered B1ab(v)+2ab(v)
Assessment Date
2020/02/05
Assessor(s)
A.J. Young, P.C.V. Van Wyk & D. Raimondo
Justification
Known from a single subpopulation that occurs in Namaqualand South Africa. It is restricted to a tiny area of less than 1 km². It has an extent of occurrence(EOO) and area of occurrence (AOO) in accordance with the IUCN guidelines of 4 km². This population is estimated to consist of less than 1000 individuals. It is currently declining as a result of illegal succulent plant trade with a significant increase in illegal collecting taking place since March 2019 as a result of demand for Conophytums coming from Asian countries. This taxon therefore qualifies as Critically Endangered under criterion B.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape
Range
Steinkopf.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Namaqualand Blomveld
Description
Vertical cliff faces, often in cracks and crevices on large quartz blocks.
Threats
This taxon occurs in an accessible site close to a town. The rangelands surrounding this town are communally owned, and is being severely degraded due to overstocking. This taxon has recently come under illegal poaching pressure with 20 plants obtained from Chinese poachers in 2019. Many more plants are likely to have been poached and the pressure to supply the large demand for Conophytums is ongoing. Illegal succulent harvesting is a severe threat, as the population is accessible from a nearby road. The population is very small and localized, and therefore any loss of individuals from the wild is rapidly increasing this species risk of extinction.
Population

This taxon is known from a single, small localized subpopulation of less than 1000 mature individuals. There is ongoing decline of population due to illegal collection.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Conophytum tantillum N.E.Br. subsp. amicorum S.A.Hammer & BarnhillVU D1+22017.1
Conophytum tantillum N.E.Br. subsp. amicorum S.A.Hammer & BarnhillLeast 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. and Barnhill, C. 1997. Odes part two: descriptions of new Mesembryanthema. Bradleya 15:42-47.


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.


Citation
Young, A.J., Van Wyk, P.C.V. & Raimondo, D. 2020. Conophytum tantillum N.E.Br. subsp. amicorum S.A.Hammer & Barnhill. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/10/25

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Distribution map

© A.J. Young


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