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Scientific Name | Leucadendron diemontianum I.Williams |
Higher Classification | Dicotyledons |
Family | PROTEACEAE |
Common Names | Visgat Conebush (e) |
National Status |
Status and Criteria | Least Concern |
Assessment Date | 2020/08/25 |
Assessor(s) | A.G. Rebelo, D. Raimondo & L. von Staden |
Justification | A restricted endemic to the mountains of the Western Cape, South Africa, it has an extent of occurrence (EOO) of 1757 km² and an area of occupancy (AOO) of 144 km². The total population is suspected to be between 5000 and 10 000, and is stable. Although potentially threatened by alien invasive plants, it is not declining. Therefore it is listed as Least Concern. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is endemic to Cederberg and Groot Winterhoek Mountains of the Western Cape Province, South Africa. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Winterhoek Sandstone Fynbos, Cederberg Sandstone Fynbos |
Description | It occurs on gentle, sandy slopes in sandstone fynbos, 650-1000 m. Mature individuals are killed by fires, and only seeds survive. Wind-dispersed seeds are stored in fire-resistant inflorescences, and released after fires. It is dioecious, with insect-pollinated male and female flowers occurring on separate plants. |
Threats |
| There are no significant threats impacting this species, 98% of records are from within protected areas. This species occurs on rocky substrates not suitable for agriculture. Although invasive alien plants occur on farms bordering the protected areas where this species occurs, rate of invasion into the protected areas is low. |
Population |
Following the extensive surveys conducted by the Protea Atlas Project (1992- 2002) this species is known from 14 subpopulations. Most subpopulations are small and quite localized, but a few, 7 out of 20, have more than 100 plants. The total population is suspected to be between 5000 and 10 000 and it is likely to be stable given that there are no significant threats to the population.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Leucadendron diemontianum I.Williams | NT D1 | 2020.1 | | Leucadendron diemontianum I.Williams | EN B1bc(iv)+2bc(iv) | Raimondo et al. (2009) | | Leucadendron diemontianum I.Williams | Rare | Hilton-Taylor (1996) | | Leucadendron diemontianum I.Williams | Rare | 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.
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Citation |
| Rebelo, A.G., Raimondo, D. & von Staden, L. 2020. Leucadendron diemontianum I.Williams. National Assessment: Red List of South African Plants version . Accessed on 2025/04/23 |
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