Plectranthus malvinus Van Jaarsv. & T.J.Edwards
Status and Criteria
|L. von Staden|
|A highly localized habitat specialist (EOO and AOO <5 km²) that is potentially threatened by competition from alien invasive plants.|
|South African endemic|
|Southern Pondoland, Port St Johns.|
Habitat and Ecology
|Forest margins and cliffs.|
|This species is potentially threatened by competition from alien invasive plants, which are particularly prone to spreading along forest margins and clearings. There is also a potential threat of habitat degradation due to fire - the grasslands surrounding forests in Pondoland are often burnt, and during the dry season very hot fires often intrude into the forest margin, leading to a decline of forest-margin specialist species. This species' preference for cliffs may however protect it against fire, as the rocky upper margins of riverine gorges act as a natural barrier to fires.|
Plectranthus malvinus is a highly localized habitat specialist, known from the sandstone summits of two adjacent hills on either side of the Mzimvubu River at Port St Johns. There are no recent field observations of the population, but it is suspected to be stable.
Status and Criteria
Citation/Red List version
|Plectranthus malvinus Van Jaarsv. & T.J.Edwards||Threatened ||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.
Van Jaarsveld, E.J. 2006. The southern African Plectranthus and the art of turning shade to glade. Fernwood Press, Simons Town.
Van Jaarsveld, E.J. and Edwards, T.J. 1997. Notes on Plectranthus (Lamiaceae) from southern Africa. Bothalia 27(1):1-6.
|von Staden, L. 2016. Plectranthus malvinus Van Jaarsv. & T.J.Edwards. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/03/25|