Taxonomy
Scientific Name
Glia decidua B.-E.van Wyk
Higher Classification
Dicotyledons
Family
APIACEAE
National Status
Status and Criteria
Near Threatened B1ab(i,ii,iii,iv,v)
Assessment Date
2012/02/01
Assessor(s)
J.G. Claassens & L. von Staden
Justification
EOO 4945 km², although at least 61% of this species' EOO is already transformed, it is still common on the Vredenburg Peninsula, and an estimated 20-30 locations remain. It however continues to decline due to ongoing habitat loss to coastal and industrial development as well as limestone mining near the coast, while inland subpopulations are threatened by habitat loss to crop cultivation, urban expansion and mining.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Piketberg to the Vredenburg Peninsula and Malmesbury.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Saldanha Limestone Strandveld, Saldanha Granite Strandveld, Swartland Shale Renosterveld, Swartland Granite Renosterveld
Description
Heavy soils derived from limestone or shale in strandveld or renosterveld at low elevations.
Threats
Although still very common on the Vredenburg Peninsula, most subpopulations are threatened by ongoing habitat loss to coastal and industrial development as well as limestone mining. Subpopulations further inland are confined to small fragments of remaining renosterveld and threatened by ongoing habitat loss to crop cultivation, mining and urban expansion. At least 61% of this species' EOO is already transformed.
Population

Extremely common on the Vredenburg Peninsula, where it has been recorded on nearly every limestone outcrop surveyed. Abundance elsewhere in the range is not known.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Glia decidua B.-E.van WykNT B1ab(i,ii,iii,iv,v)2012.1
Bibliography

Van Wyk, B.E., Tilney, P.M. and Magee, A.R. 2010. A revision of the genus Glia (Apiaceae, tribe Heteromorpheae). South African Journal of Botany 76(2):259-271.


Citation
Claassens, J.G. & von Staden, L. 2012. Glia decidua B.-E.van Wyk. National Assessment: Red List of South African Plants version . Accessed on 2025/05/31

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Distribution map


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