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Scientific Name | Cyanella cygnea G.Scott |
Higher Classification | Monocotyledons |
Family | TECOPHILAEACEAE |
National Status |
Status and Criteria | Near Threatened B1ab(iii,v) |
Assessment Date | 2015/06/02 |
Assessor(s) | D. Raimondo & L. von Staden |
Justification | EOO 4775 km², this species is estimated to occur at 10 to 15 locations, and declining due to overgrazing. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | Richtersveld to Komaggas. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Stinkfonteinberge Eastern Apron Shrubland, Goariep Mountain Succulent Shrubland, Anenous Plateau Shrubland, Central Richtersveld Mountain Shrubland, Namaqualand Klipkoppe Shrubland, Noms Mountain Desert |
Description | Rocky places, often somewhat damp, sheltered places in association with moisture runoff such as along watercourses or in gorges. |
Threats |
| This species is threatened by ongoing habitat degradation due to severe overstocking of livestock, causing a loss of shrub cover, species diversity, as well as erosion in places. Currently, overgrazing is causing population decline around Kubus, the Ploegberg, Eksteenfontein and Steinkopf. Some subpopulations occur in the central Richtersveld mountains where grazing pressure is currently low, but as rangelands on the flats and closer to settlements are becoming increasingly degraded, herders are moving their flocks into the mountains in search of better grazing, and grazing pressure is likely to increase in these areas in future. |
Population |
This species is a localized habitat specialist, occurring in small, scattered subpopulations.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Cyanella cygnea G.Scott | NT B1ab(iii,v) | 2015.1 | | Cyanella cygnea G.Scott | Rare | Raimondo et al. (2009) | | Cyanella cygnea G.Scott | Rare | Hilton-Taylor (1996) | |
Bibliography |
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. A revision of Tecophilaeaceae subfam. Tecophilaeoideae in Africa. Bothalia 42(1):21-41.
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.
Scott, G. 1991. A revision of Cyanella (Tecophilaeaceae) excluding C. amboensis. South African Journal of Botany 57(1):34-54.
Snijman, D.A. 2013. Plants of the Greater Cape Floristic Region 2: The extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria.
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Citation |
| Raimondo, D. & von Staden, L. 2015. Cyanella cygnea G.Scott. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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