Conophytum semivestitum

Taxonomy
Scientific Name
Conophytum semivestitum L.Bolus
Higher Classification
Dicotyledons
Family
AIZOACEAE
National Status
Status and Criteria
Critically Endangered (Possibly Extinct)
Assessment Date
2016/09/15
Assessor(s)
A.J. Young & L. von Staden
Justification
A distinct, but rare and very poorly known species, last recorded in the wild in the 1930s. Collections provide very imprecise locality descriptions, but many field surveys in the wider area where it is presumed to have been recorded from have failed to relocate it in the wild. It is possibly extinct, but may also be overlooked.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape
Range
Bushmanland, exact locality unknown.
Habitat and Ecology
Major system
Terrestrial
Description
Unknown, presumably grew on quartzite or feldspar.
Threats
Threats to this species are unknown. It may have declined due to road construction, mining, or overgrazing.
Population

This species is only known from a drawing, based on plants collected somewhere in Bushmanland in the 1930s. It was thought to have been collected in the vicinity of Jakkalswater between Steinkopf and Vioolsdrif, but many field searches in this remote area have failed to relocate the population. There was one later collection, but the locality is not specified. It is possibly extinct, but without precise locality information, it is almost impossible to determine with certainty if it is extinct or not.


Population trend
Unknown
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Conophytum semivestitum L.BolusExtinct Raimondo et al. (2009)
Conophytum semivestitum L.BolusExtinct Victor (2002)
Conophytum semivestitum L.BolusExtinct Hilton-Taylor (1996)
Bibliography

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.


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.


Citation
Young, A.J. & von Staden, L. 2016. Conophytum semivestitum L.Bolus. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/08/22

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Distribution map


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