Drosanthemum worcesterense

Taxonomy
Scientific Name
Drosanthemum worcesterense L.Bolus
Higher Classification
Dicotyledons
Family
AIZOACEAE
National Status
Status and Criteria
Vulnerable B1ab(i,ii,iii,iv,v)
Assessment Date
2015/12/14
Assessor(s)
L. von Staden
Justification
EOO 2088 km², and six known locations. This species continues to decline due to ongoing habitat loss and degradation.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Breede River Valley between Tulbagh and Worcester and eastwards to Touwsrivier and Karoopoort.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Breede Shale Renosterveld, Matjiesfontein Shale Renosterveld, Robertson Karoo
Description
Stony clay soils in renosterveld.
Threats
Critically little of this species' lowland renosterveld remains within the Breede River Valley, predominantly due to loss to agricultural expansion. Known subpopulations occur on isolated remnants, and continue to decline, particularly due to development around Worcester. Around Touwsrivier and Karoopoort, lowland renosterveld is extensively degraded due to overgrazing, and have also been ploughed in places. Drosanthemum species are highly palatable and decline rapidly in overgrazed areas.
Population
Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Drosanthemum worcesterense L.BolusThreatened Raimondo et al. (2009)
Bibliography

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. 2015. Drosanthemum worcesterense L.Bolus. 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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