|
Scientific Name | Hebenstretia dregei Rolfe |
Higher Classification | Dicotyledons |
Family | SCROPHULARIACEAE |
Synonyms | Polycenia fruticosa E.Mey., not Hebenstretia fruticosa L.f. |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2018/05/14 |
Assessor(s) | L. von Staden |
Justification | Hebenstretia dregei is a rare, localized habitat specialist known from three locations. It has an extent of occurrence (EOO) of 138 km² and is potentially threatened by competition from alien invasive plants. It is therefore listed as Vulnerable under criterion D. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is endemic to South Africa, and is found between Genadendal and Swellendam in the Western Cape. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | South Langeberg Sandstone Fynbos, South Sonderend Sandstone Fynbos |
Description | It occurs on lower south-facing stony mountain slopes, where it is possibly restricted to kloofs. |
Threats |
| Hebenstretia dregei is potentially threatened by competition from alien invasive plants - the lower southern slopes of the Riviersonderend Mountains around Genadendal are densely infested with unmanaged, spreading invasive pines. Density of pines on the mountain have significantly increased over the past 15 years. |
Population |
It is known from very few collections, and was last recorded in 1958. It is probably a rare, localized habitat specialist - two collections with relatively precise locality descriptions are from kloofs. The current population trend is not known. Field surveys are needed to relocate it in the wild.
|
Population trend | Unknown |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Hebenstretia dregei Rolfe | VU D2 | 2020.1 | | Hebenstretia dregei Rolfe | Data Deficient | Raimondo et al. (2009) | |
Bibliography |
Goldblatt, P. and Manning, J.C. 2000. Cape Plants: A conspectus of the Cape Flora of South Africa. Strelitzia 9. National Botanical Institute, Cape Town.
Manning, J.C. and Goldblatt, P. 2012. Plants of the Greater Cape Floristic Region 1: The Core Cape Flora. Strelitzia 29. South African National Biodiversity 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.
Roessler, H. 1979. Revision der Gattungen Hebenstretia L. und Dischisma Choisy (Scrophulariaceae - Selagineae). Mitteilungen der Botanischen Staatssammlung München 15:1-160.
Rolfe, R.A. 1901. Selagineae. In: W.T. Thiselton-Dyer (ed). Flora Capensis V Section I (Acanthaceae-Proteaceae):95-180. Lovell Reeve & Co., Ltd., London.
|
Citation |
| von Staden, L. 2018. Hebenstretia dregei Rolfe. National Assessment: Red List of South African Plants version . Accessed on 2025/02/18 |
Comment on this assessment
