Taxonomy
Scientific Name
Agathosma rehmanniana Dummer
Higher Classification
Dicotyledons
Family
RUTACEAE
National Status
Status and Criteria
Critically Endangered (Possibly Extinct)
Assessment Date
2019/03/25
Assessor(s)
L. von Staden
Justification
Agathosma rehmanniana has not been recorded since 1880 and is possibly extinct.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Montagu Pass near George.
Habitat and Ecology
Major system
Terrestrial
Major habitats
South Outeniqua Sandstone Fynbos, North Outeniqua Sandstone Fynbos
Description
Unknown, probably sandstone fynbos.
Threats
Agathosma rehmanniana is possibly extinct due to habitat loss to timber plantations on the lower southern slopes of the Outeniqua Pass, or agriculture on the lower northern slopes. On the upper slopes it is likely to be threatened by competition from alien invasive species, particularly unmanaged escaped pine seedlings.
Population

Agathosma rehmanniana is only known from the type, collected in 1880. The population trend is not known, and field surveys to relocate this species in the wild has thus far been unsuccessful. As the locality description on the type specimen is imprecise, it is difficult to infer whether this species is extinct or not, as the full range of possible habitat has not yet been explored.


Population trend
Unknown
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Agathosma rehmanniana DummerRare Raimondo et al. (2009)
Agathosma rehmanniana DummerUncertain Hall et al. (1980)
Bibliography

Hall, A.V., De Winter, M., De Winter, B. and Van Oosterhout, S.A.M. 1980. Threatened plants of southern Africa. South African National Scienctific Programmes Report 45. CSIR, Pretoria.


Pillans, N.S. 1950. A revision of Agathosma. Journal of South African Botany 16(2):55-177.


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. 2019. Agathosma rehmanniana Dummer. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/10/20

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Distribution map


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