Taxonomy
Scientific Name
Annesorhiza bracteosa Magee
Higher Classification
Dicotyledons
Family
APIACEAE
National Status
Status and Criteria
Endangered B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)
Assessment Date
2012/10/08
Assessor(s)
L. von Staden
Justification
A highly range-restricted (EOO <120 km²), rare species, estimated to occur at fewer than five locations and declining due to ongoing habitat loss to crop cultivation and competition from alien invasive plants.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Elim.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Elim Ferricrete Fynbos
Description
Unknown, possibly damp alluvial flats.
Threats
A. bracteosa is threatened by extensive, ongoing habitat loss to crop cultivation to the north of Elim. South of Elim towards the coast, expanding cultivation as well as dense alien invasive plant infestations are likely to threaten surviving plants.
Population

This species is known from only two collections, and was last collected in 1958. Recent searches were unsuccessful (Magee et al. 2011). It flowers late in the season (February to March), and was only recently recognized as a distinct species through revisionary studies of this previously poorly known group, which means that it has quite likely been overlooked. However, synflorescences can be up to 1 m tall (Magee et al. 2011), and therefore this is not an inconspicuous species, and the failure to find living subpopulations is concerning. Much of the area where this very localized species has been recorded is transformed or invaded by alien plants, and it is likely to be rare and in danger of extinction. Urgent surveys are needed to determine whether this species is not already extinct.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Annesorhiza bracteosa MageeEN B1ab(i,ii,iii,iv,v)+2ab(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 bracteosa Magee. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2021/09/26

Comment on this assessment Comment on this assessment
Distribution map


Search for images of Annesorhiza bracteosa on iNaturalist