Acanthopsis dregeana H.M.Steyn subsp. dregeana
Status and Criteria
Critically Endangered B1ab(iii,v)+2ab(iii,v)
|L. von Staden & H.M. Steyn|
|A localized habitat specialist (EOO <10 km²), known from one location where it is declining due to overgrazing.|
|South African endemic|
|Richtersveld north-west of Eksteenfontein.|
Habitat and Ecology
|Central Richtersveld Mountain Shrubland, Lekkersing Succulent Shrubland|
|Gentle slopes in Central Richtersveld Mountain Shrubland.|
|Lower slopes and plains close to settlements in the Richtersveld are continually degraded due to severe, ongoing overgrazing as a result of overstocking of communal rangelands. Overgrazing has caused loss of plant species diversity and shrub cover, and is also leading to erosion of exposed slopes and drainage lines. Field observations indicate that this species is heavily grazed (H.M. Steyn pers. obs.), and the population is in decline as a result.|
This species is known from two small, localized subpopulations about 7 km apart. Both occur within severely overgrazed communal rangelands owned by the same community, and it is therefore considered one location.
Steyn, H.M. and Van Wyk, A.E. 2016. Taxonomic notes on the shrublet species of Acanthopsis (Acanthaceae, tribe Acantheae), with two new species from South Africa. Phytotaxa 244(2):145-160.
|von Staden, L. & Steyn, H.M. 2015. Acanthopsis dregeana H.M.Steyn subsp. dregeana. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/03/31|