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Scientific Name | Dioscorea stipulosa Uline ex R.Knuth |
Higher Classification | Monocotyledons |
Family | DIOSCOREACEAE |
National Status |
Status and Criteria | Rare |
Assessment Date | 2010/09/08 |
Assessor(s) | A.P. Dold & L. von Staden |
Justification | A range-restricted (EOO 333 km²), but locally common habitat specialist that is not threatened. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Eastern Cape |
Range | Katberg to Hogsback. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Amathole Montane Grassland |
Description | Scrambler among woody shrubs, associated with dolerite outcrops in montane grassland. |
Threats |
Montane grasslands within the known range of this species are ± 28% transformed, mainly to forestry plantations. Although forestry plantations are sporadically expanding, it is unlikely to cause significant decline of this locally common species, with many subpopulations protected in conservation areas. The specialized habitat of this species, rocky outcrops, is also protecting it from overgrazing and too frequent fires, used to stimulate grass growth in rangelands. |
Population |
Localized, but locally common in suitable habitat. The population is not suspected to be declining.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | Dioscorea stipulosa Uline ex R.Knuth | Data Deficient (Taxonomically Problematic) | Raimondo et al. (2009) | |
Bibliography |
Archibald, E.E.A. 1967. The genus Dioscorea in the Cape Province west of East London. Journal of South African Botany 33:1-46.
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.
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Citation |
Dold, A.P. & von Staden, L. 2010. Dioscorea stipulosa Uline ex R.Knuth. National Assessment: Red List of South African Plants version . Accessed on 2025/02/11 |