Dioscorea buchananii Benth. subsp. undatiloba (Baker) Wilkin
|Dioscorea junodii Burtt Davy, Dioscorea undatiloba Baker|
Status and Criteria
Data Deficient - Insufficient Information
|P. Wilkin, M. Muasya & L. von Staden|
|A widespread, but very rare and poorly known taxon. Based on current data, its risk of extinction cannot be assessed.|
|South African endemic|
|Known from a few scattered records from Limpopo and KwaZulu-Natal.|
Habitat and Ecology
|Grassland, Indian Ocean Coastal Belt|
|Uncertain. It possibly occurs in open grassland.|
|The threats to this taxon are not well understood, and difficult to infer as its precise habitat is not known. In KwaZulu-Natal, it is likely to have declined due to habitat loss to urban expansion, and may be locally extinct in the province. In Limpopo it has been recorded from densely populated rural areas, and is likely to be threatened by ongoing habitat loss and degradation due to expanding settlements, overgrazing and too-frequent burning of grasslands.|
This taxon is very rare, or otherwise overlooked and confused with other Dioscorea species. Most records date from the 1920s and earlier. Field surveys are needed to relocate this taxon at historical localities.
Status and Criteria
Citation/Red List version
|Dioscorea undatiloba Baker||Data Deficient (Taxonomically Problematic) ||Raimondo et al. (2009)|
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.
Wilkin, P. and Muasya, A.M. 2015. Clarifying the Dioscorea buchananii Benth. species complex: a new potentially extinct subspecies for South Africa. PhytoKeys 48:51-72.
|Wilkin, P., Muasya, M. & von Staden, L. 2016. Dioscorea buchananii Benth. subsp. undatiloba (Baker) Wilkin. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/03/25|