Taxonomy
Scientific Name
Pelargonium burgerianum J.J.A.van der Walt
Higher Classification
Dicotyledons
Family
GERANIACEAE
National Status
Status and Criteria
Vulnerable D2
Assessment Date
2019/03/29
Assessor(s)
L. von Staden
Justification
A very localized species, known from two locations and potentially threatened by habitat loss to agricultural expansion.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Koo Valley near Montagu.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Montagu Shale Fynbos
Description
Coarse sandy soil derived from sandstone on gentle slopes near streams.
Threats
The lower slopes of the Koo Valley around the two farms where this species was last collected in the early 1990s are extensively cultivated, but comparative land cover datasets show no significant further expansion of fruit orchards since 1990. Although the author states that the species occurs on sandstone, there is no sandstone within the altitudinal range (900-1000 m) as indicated on the specimens, and it may have been collected from shale fynbos, in which case it is potentially vulnerable to further habitat loss to agricultural expansion.
Population

This species is locally common across an area of about five kilometres spanning two adjacent farms (Van der Walt 1994). It was observed in the first year after a fire, and possibly only flowers in response to fires, and may therefore be overlooked. It was last recorded in 2005.


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Pelargonium burgerianum J.J.A.van der WaltRare Raimondo et al. (2009)
Pelargonium burgerianum J.J.A.van der WaltRare 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.


Van der Walt, J.J.A. 1994. A new species of Pelargonium section Campylia (Geraniaceae). South African Journal of Botany 60(3):144-148.


Citation
von Staden, L. 2019. Pelargonium burgerianum J.J.A.van der Walt. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/10/25

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Distribution map


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