Ceropegia occulta

Taxonomy
Scientific Name
Ceropegia occulta R.A.Dyer
Higher Classification
Dicotyledons
Family
APOCYNACEAE
National Status
Status and Criteria
Endangered B1ab(iii)+2ab(iii)
Assessment Date
2016/01/20
Assessor(s)
L. von Staden
Justification
EOO <200 km², plants at two known locations are threatened by ongoing habitat loss to vineyard expansion.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Worcester to Robertson.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Robertson Karoo
Description
Sheltered among karroid shrubs on shale slopes.
Threats
A range-restricted endemic to the Breede River Valley between Worcester and Robertson, where it continues to lose habitat to vineyard expansion.
Population

Ceropegia occulta is an extremely rare species, known from only a few collections, but plants are cryptic and possibly overlooked. Known records of this species are from the area between Worcester and Robertson. Dyer (1980) mentions one collection from Suurbraak near Swellendam that may possibly be this species, pending further taxonomic study.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Ceropegia occulta R.A.DyerThreatened Raimondo et al. (2009)
Bibliography

Dyer, R.A. 1958. New and interesting records of African flowering plants: Ceropegia occulta. Bothalia 7(1):21-22.


Dyer, R.A. 1980. Brachystelma, Ceropegia and Riocreuxia. In: O.A. Leistner (ed). Flora of Southern Africa 27 Part 4:1-88. Botanical Research Institute, Pretoria.


Goldblatt, P. and Manning, J.C. 2000. Cape Plants: A conspectus of the Cape Flora of South Africa. Strelitzia 9. National Botanical Institute, Cape Town.


Manning, J.C. and Goldblatt, P. 2012. Plants of the Greater Cape Floristic Region 1: The Core Cape Flora. Strelitzia 29. South African National Biodiversity 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.


Citation
von Staden, L. 2016. Ceropegia occulta R.A.Dyer. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/10/17

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Distribution map


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