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Scientific Name | Merremia malvaefolia Rendle |
Higher Classification | Dicotyledons |
Family | CONVOLVULACEAE |
Synonyms | Ipomoea malvaefolia (Rendle) Baker |
National Status |
Status and Criteria | Critically Endangered (Possibly Extinct) |
Assessment Date | 2011/10/12 |
Assessor(s) | J.E. Victor & L. von Staden |
Justification | Merremia malvaefolia has not been collected for more than 100 years, and is known from only a few collections without precise locality details. Recent searches in the coastal hills around Port Alfred, where this species is presumed to occur, revealed that the habitat is excessively transformed and if it was confined to this area, it is quite likely extinct. Further searches in similar suitable habitat between Port Alfred and East London are ongoing. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Eastern Cape |
Range | Port Alfred. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | South Eastern Coastal Thornveld, Albany Mesic Thicket |
Description | Sandy hills and flats near the coast, possibly confined to river mouths or wetlands. |
Threats |
| Coastal hills and flats within the known range of this species are excessively degraded and transformed as a result of alien invasive plants and urban expansion. |
Population |
Population trend | Unknown |
Conservation |
| Not currently conserved in any formally protected area. |
Notes |
| Field surveys were supported by the Botanical Education Trust. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Merremia malvaefolia Rendle | Data Deficient | 2011.1 | | Merremia malvaefolia Rendle | Data Deficient | Raimondo et al. (2009) | | Merremia malvaefolia Rendle | Data Deficient | Victor (2002) | | Merremia malvaefolia Rendle | Insufficiently Known | Hilton-Taylor (1996) | |
Bibliography |
Baker, J.G. and Wright, C.H. 1904. Convolvulaceae. In: W.T. Thiselton-Dyer (ed). Flora Capensis IV Section II (Hydrophyllaceae to Pedalineae):45-87. Lovell Reeve & Co., Ltd., London.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Meeuse, A. 1957. The South African Convolvulaceae. Bothalia 6(4):1-151.
Meeuse, A.D.J. and Welman, W.G. 2000. Convolvulaceae. In: G. Germishuizen (ed). Flora of southern Africa 28 Part 1:1-138. 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.
Victor, J.E. 2002. South Africa. In: J.S. Golding (ed), Southern African plant Red Data Lists. Southern African Botanical Diversity Network Report 14 (pp. 93-120), SABONET, Pretoria.
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Citation |
| Victor, J.E. & von Staden, L. 2011. Merremia malvaefolia Rendle. National Assessment: Red List of South African Plants version . Accessed on 2025/05/23 |
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