Tylecodon tuberosus

Taxonomy
Scientific Name
Tylecodon tuberosus Toelken
Higher Classification
Dicotyledons
Family
CRASSULACEAE
National Status
Status and Criteria
Vulnerable D2
Assessment Date
2015/05/13
Assessor(s)
L. von Staden
Justification
A rare, localized species, known from one, possibly two locations, and potentially threatened by habitat degradation due to overgrazing.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape
Range
Steinkopf.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Namaqualand Klipkoppe Shrubland
Description
Shaded rock crevices on upper south-facing quartzitic slopes and ridges, 900-1100 m.
Threats
Potentially threatened by habitat degradation due to overgrazing, and trampling by livestock.
Population

A rare and very poorly known species. It is cryptic and easily overlooked, and more surveys are needed to better determine the size and extent of the population.


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Tylecodon tuberosus ToelkenVU D22015.1
Tylecodon tuberosus ToelkenRare Raimondo et al. (2009)
Bibliography

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.


Tölken, H.R. 1978. New taxa and new combinations in Cotyledon and allied genera. Bothalia 12(3):377-393.


Tölken, H.R. 1985. Crassulaceae. In: O.A. Leistner (ed). Flora of southern Africa 14,1:1-244. Botanical Research Institute, Pretoria.


Van Jaarsveld, E.J. and Koutnik, D. 2004. Cotyledon and Tylecodon. Umdaus Press, Pretoria.


Citation
von Staden, L. 2015. Tylecodon tuberosus Toelken. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2019/08/20

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Distribution map


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