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Scientific Name | Pentameris barbata (Nees) Steud. subsp. orientalis (H.P.Linder) Galley & H.P.Linder |
Higher Classification | Monocotyledons |
Family | POACEAE |
Synonyms | Pentaschistis barbata (Nees) H.P.Linder (in part), Pentaschistis barbata (Nees) H.P.Linder subsp. orientalis H.P.Linder |
National Status |
Status and Criteria | Critically Endangered B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v); D |
Assessment Date | 2005/04/12 |
Assessor(s) | D. Raimondo & A.L. Schutte-Vlok |
Justification | A highly range-restricted subspecies (EOO<6 km², AOO<1 km²), known from two subpopulations in the Knysna area. The subpopulation inside the Goukamma Reserve disappeared over the past 10 years, most likely as a result of incorrect fire management. The second subpopulation (outside the reserve) is severely threatened by invasive alien plants and urban development. There are fewer than 50 mature individuals of this subspecies extant. It is therefore assessed as Critically Endangered under criteria B and D. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is known from Goukamma Nature Reserve. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Goukamma Dune Thicket |
Description | Plants grow in coastal dunes. |
Threats |
| It occurs within a reserve but has not been found in the past 5 years. There are aliens in this reserve (pines) and a lack of fire management is possibly threatening this species. Outside the reserve, the subpopulation is currently being threatened by development (A. Schutte Vlok 2005). |
Population |
Most of the plants (50 individuals) were found in the subpopulation outside of the reserve. Ten individuals were known from inside the reserve but can't be relocated.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Pentaschistis barbata (Nees) H.P.Linder subsp. orientalis H.P.Linder | CR B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v); D | 2012.1 | | Pentaschistis barbata (Nees) H.P.Linder subsp. orientalis H.P.Linder | CR B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v); D | Raimondo et al. (2009) | | Pentaschistis barbata (Nees) H.P.Linder subsp. orientalis H.P.Linder | Indeterminate | Hilton-Taylor (1996) | |
Bibliography |
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Linder, H.P. and Ellis, R.P. 1990. A revision of Pentaschistis (Arundineae: Poaceae). Contributions from the Bolus Herbarium 12:1-124.
Linder, H.P., Baeza, M., Barker, N.P., Galley, C., Humphreys, A.M., Lloyd, K.M., Orlovich, D.A., Pirie, M.D., Simon, B.K., Walsh, N. and Verboom, G.A. 2010. A generic classification of the Danthonioideae (Poaceae). Annals of the Missouri Botanical Garden 97(3):306-364.
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.
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Citation |
| Raimondo, D. & Schutte-Vlok, A.L. 2005. Pentameris barbata (Nees) Steud. subsp. orientalis (H.P.Linder) Galley & H.P.Linder. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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