Taxonomy
Scientific Name
Annesorhiza refracta Magee
Higher Classification
Dicotyledons
Family
APIACEAE
National Status
Status and Criteria
Endangered B1ab(i,ii,iii,iv,v)
Assessment Date
2012/10/09
Assessor(s)
L. von Staden
Justification
EOO 1045 km², fewer than five locations continue to decline due to ongoing habitat loss, fragmentation and degradation as a result of expanding crop cultivation, overgrazing and competition from alien invasive plants.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Eendekuil to Moorreesburg and Tulbagh.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Swartland Shale Renosterveld, Breede Shale Renosterveld
Description
Clay or ferricrete soils.
Threats
More than 90% of this species' habitat is already transformed, predominantly for crop cultivation. Remaining subpopulations are threatened by ongoing habitat loss and degradation as a result of agricultural runoff (herbicides and fertilizer), overgrazing due to overstocking of small fragments, lack of fire and competition from alien invasive plants.
Population

This newly described species is known from very few collections, but is likely to be overlooked, and more common than records indicate (Magee et al. 2011). However, with more than 90% of this species' lowland renosterveld habitat already transformed, it is unlikely that many more than the two recently recorded subpopulations survive, and all are likely to be confined to small, isolated remnants of natural vegetation.


Population trend
Decreasing
Notes
This species flowers from February to March and is likely to be overlooked in surveys.
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Annesorhiza refracta MageeEN B1ab(i,ii,iii,iv,v)2013.1
Bibliography

Magee, A.R., Van Wyk, B.E., Tilney, P.M. and Vessio, N. 2011. A taxonomic revision of the Annesorhiza triternata group (Apiaceae, Apioideae): the transfer of Peucedanum triternatum and P. filicaule and the description of five new species. Systematic Botany 36(2):508-519.


Citation
von Staden, L. 2012. Annesorhiza refracta Magee. National Assessment: Red List of South African Plants version . Accessed on 2025/07/01

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Distribution map


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