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Scientific Name | Cyphostemma rubroglandulosum Retief & A.E.van Wyk |
Higher Classification | Dicotyledons |
Family | VITACEAE |
National Status |
Status and Criteria | Rare |
Assessment Date | 2020/11/30 |
Assessor(s) | J.E. Victor & L. von Staden |
Justification | Cyphostemma rubroglandulosum has an extent of occurrence (EOO) of 5600 km². It is locally common within a restricted area. It occurs on the margins of Pondoland forests, a habitat that is being threatened and degraded by firewood harvesting and too frequent fires. However, because this species is restricted to extremely rocky sites, it is likely to be protected from fire. Firewood harvesting is causing degradation of the habitat but has no direct impact on this species at present. Although potentially threatened, it is at present still too common to qualify as Vulnerable under criterion D. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Eastern Cape, KwaZulu-Natal |
Range | This species is endemic to South Africa, and is found from Oribi Gorge to Port St Johns. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Northern Coastal Forest, Scarp Forest |
Description | It occurs in Pondoland scarp forest, and in forest margins on rocky outcrops. |
Threats |
| Margins of Pondoland forests are an extremely threatened habitat that is being degraded by firewood harvesting and receding due to too intense and frequent grassland fires. However, the rocky outcrops where this species grows is likely to be protected from fires. |
Population |
This species is fairly common in suitable habitat (E. Retief pers. comm.).
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Cyphostemma rubroglandulosum Retief & A.E.van Wyk | Rare | Raimondo et al. (2009) | | Cyphostemma rubroglandulosum Retief & A.E.van Wyk | Lower Risk - Least Concern | Scott-Shaw (1999) | | Cyphostemma rubroglandulosum Retief & A.E.van Wyk | Not Threatened | 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.
Retief, E. and Van Wyk, A.E. 1996. A new species of Cyphostemma (Vitaceae) from South Africa. South African Journal of Botany 62(4):183-187.
Scott-Shaw, C.R. 1999. Rare and threatened plants of KwaZulu-Natal and neighbouring regions. KwaZulu-Natal Nature Conservation Service, Pietermaritzburg.
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Citation |
| Victor, J.E. & von Staden, L. 2020. Cyphostemma rubroglandulosum Retief & A.E.van Wyk. National Assessment: Red List of South African Plants version . Accessed on 2025/05/09 |
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