Potberg Pincushion

Taxonomy
Scientific Name
Leucospermum fulgens Rourke
Higher Classification
Dicotyledons
Family
PROTEACEAE
Common Names
Potberg Pincushion (e)
National Status
Status and Criteria
Critically Endangered B1ab(iii,v)
Assessment Date
2020/06/09
Assessor(s)
A.G. Rebelo, D. Raimondo & L. von Staden
Justification
Leucospermum fulgens has a restricted range known from only one location and has an extent of occurrence (EOO) and area of occupancy (AOO) of 44 km². Invasive alien plants are causing a continuing decline in habitat quality and number of mature individuals. This species is listed as Critically Endangered under criterion B.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
This species occurs in the Potberg section of De Hoop Nature Reserve, in the Western Cape Province of South Africa.
Habitat and Ecology
Major system
Terrestrial
Major habitats
De Hoop Limestone Fynbos, Albertinia Sand Fynbos
Description
It is confined to deep colluvial soils between Potberg to the north and limestone hills to the south. Mature individuals are killed by fires, and only seeds survive. Seeds are released after ripening, and dispersed by ants to their underground nests, where they are protected from predation and germinate following fire. It is pollinated by birds.
Threats
In the past 10% of this species habitat was ploughed for pasture and alien acacias and gums planted. In 1987 the area was expropriated from landowners for military purposes and transferred to the De Hoop Nature Reserve. Although the aliens in the western portion of the subpopulation have been eliminated, a fair proportion of the range is still covered with gum plantations and alien acacias have increased in density in the eastern range despite clearing programmes.
Population

This species is confined to a single location, it occurs as many small stands of plants scattered across an 8 km range. The total population is estimated to be between 5000 and 10 000 plants. There is evidence that the species moves into old fields with other Fynbos elements, and the old lands should be restored with a view to increasing the population numbers. Dense invasive aliens in the eastern portion of its range are suspected to be causing an ongoing decline to the population.


Population trend
Decreasing
Conservation
It is confined to De Hoop Nature Reserve.
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Leucospermum fulgens RourkeCR B1ab(iii)c(iv)Raimondo et al. (2009)
Leucospermum fulgens RourkeVulnerable Hilton-Taylor (1996)
Leucospermum fulgens RourkeRare Hall et al. (1980)
Bibliography

Goldblatt, P. and Manning, J.C. 2000. Cape Plants: A conspectus of the Cape Flora of South Africa. Strelitzia 9. National Botanical Institute, Cape Town.


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.


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


Manning, J.C. and Goldblatt, P. 2012. Plants of the Greater Cape Floristic Region 1: The Core Cape Flora. Strelitzia 29. South African National Biodiversity 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.


Rebelo, T. 2001. Sasol Proteas: A field guide to the proteas of southern Africa. (2nd ed.). Fernwood Press, Vlaeberg, Cape Town.


Citation
Rebelo, A.G., Raimondo, D. & von Staden, L. 2020. Leucospermum fulgens Rourke. National Assessment: Red List of South African Plants version . Accessed on 2025/04/24

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Distribution map


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