Taxonomy
Scientific Name
Adenandra villosa (P.J.Bergius) Licht. ex Roem. & Schult. subsp. apiculata Strid
Higher Classification
Dicotyledons
Family
RUTACEAE
National Status
Status and Criteria
Vulnerable B1ab(iii)+2ab(iii)
Assessment Date
2019/03/25
Assessor(s)
L. von Staden
Justification
A rare, range-restricted taxon (EOO 1758 km²), known from seven locations and declining due to competition from alien invasive plants.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Riviersonderend Mountains and the Langeberg Mountains.
Habitat and Ecology
Major system
Terrestrial
Major habitats
North Langeberg Sandstone Fynbos, South Sonderend Sandstone Fynbos, North Sonderend Sandstone Fynbos
Description
Dry sandstone sand between rocks, 450-1500 m.
Threats
On the southern slopes of the Riviersonderend Mountains alien invasive pines have spread and significantly increased in density over the past 15 years, putting many native local endemic species at risk. At present, scattered pines are present on the north-facing slopes. Recent observation records from the Langeberg do not record any threats.
Population

This rare taxon is known from seven locations, but its distribution range is poorly explored and it may be more common than records suggest. It most often occurs in small, scattered subpopulations, but is sometimes locally common. A continuing population decline is inferred from increasing impact of alien invasive plants in its habitat on the Riviersonderend Mountains.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Adenandra villosa (P.J.Bergius) Licht. ex Roem. & Schult. subsp. apiculata StridRare Raimondo et al. (2009)
Adenandra villosa (P.J.Bergius) Licht. ex Roem. & Schult. subsp. apiculata StridLower Risk - Least Concern Victor (2002)
Adenandra villosa (P.J.Bergius) Licht. ex Roem. & Schult. subsp. apiculata StridRare Hilton-Taylor (1996)
Bibliography

Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical 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.


Strid, A. 1972. Revision of the genus Adenandra (Rutaceae). Opera Botanica 32:1-112.


Victor, J.E. 2002. South Africa. In: J.S. Golding (ed), Southern African plant Red Data Lists. Southern African Botanical Diversity Network Report 14 (pp. 93-120), SABONET, Pretoria.


Citation
von Staden, L. 2019. Adenandra villosa (P.J.Bergius) Licht. ex Roem. & Schult. subsp. apiculata Strid. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/10/28

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Distribution map


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