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Scientific Name | Manulea robusta Pilg. |
Higher Classification | Dicotyledons |
Family | SCROPHULARIACEAE |
Synonyms | Sutera remotiflora Dinter ex Range |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2015/04/29 |
Assessor(s) | D. van der Colff & L. von Staden |
Justification | A rare, localized species known from five locations and potentially threatened by overgrazing. |
Distribution |
Endemism | Not endemic to South Africa |
Provincial distribution | Northern Cape |
Range | Richtersveld and southern parts of Namibia. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Tatasberg Mountain Succulent Shrubland, Goariep Mountain Succulent Shrubland, Central Richtersveld Mountain Shrubland |
Description | Rocky slopes in mountains. |
Threats |
| Livestock is allowed to graze within the Richtersveld National Park (Jordaan and Van Wyk 2005) and some areas, particularly those accessible by roads and close to settlements are severely overgrazed. Manulea species are palatable (Van Breda et al.) and may potentially be affected by overgrazing. It occurs mostly in more remote, mountainous areas where grazing pressure is at present not severe, but it may increase in future as grazing on the flats and closer to settlements are increasingly degraded. |
Population |
This species is rare, occurring sporadically in small subpopulations along the central mountains of the Richtersveld. In Namibia, it is also known from only a few records, but may be overlooked as its range is botanically poorly explored.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Manulea robusta Pilg. | VU D2 | 2015.1 | | Manulea robusta Pilg. | Least Concern | Raimondo et al. (2009) | |
Bibliography |
Hilliard, O.M. 1994. The Manuleae: a tribe of Scrophulariaceae. Edinburgh University Press, Edinburgh.
Jordaan, M. and Van Wyk, A.E. 2005. A new species of Gymnosporia (Celastraceae) from southern Africa. Novon 15(2):301-304.
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.
Snijman, D.A. 2013. Plants of the Greater Cape Floristic Region 2: The extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria.
Van Breda, P.A.B., Nel, E.J. and Bayer, M.B. Palatability of plant species – winter rainfall region. http://www.elsenburg.com/trd/plantprod/downloads/palatability.pdf. Downloaded on 30 July 2014.
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Citation |
| van der Colff, D. & von Staden, L. 2015. Manulea robusta Pilg. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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