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Scientific Name | Reyemia chasmanthiflora Hilliard |
Higher Classification | Dicotyledons |
Family | SCROPHULARIACEAE |
National Status |
Status and Criteria | Endangered B1ab(iii) |
Assessment Date | 2019/11/11 |
Assessor(s) | D. Raimondo |
Justification | A restricted endemic with an extent of occurrence of less than 500 km², known from only two locations and experiencing ongoing decline in habitat quality as a result of livestock overgrazing and severe drought. This species therefore qualifies for listing as Endangered under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | Between Calvinia and Middelpos. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Succulent Karoo |
Description | In karroid vegetation on very dry stony flats. |
Threats |
| The western part of the Karoo where this species occurs, has becoming increasingly arid over the past 20 years with a severe drought impacting this area since 2016. Ongoing aridification is predicted by climate change models. Surveys of western Karoo between 2016 and 2018 noted that this vegetation is extremely degraded and highly overgrazed. |
Population |
Despite surveys having taken place within this species range between 2005 and 2015 as part of the Greater Escarpment Biodiversity Project and the Karoo BioGaps Project this species has not been recorded, this is an indication that it is likely declining.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Reyemia chasmanthiflora Hilliard | Rare | Raimondo et al. (2009) | | Reyemia chasmanthiflora Hilliard | Rare | Hilton-Taylor (1996) | |
Bibliography |
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Magee, A.R. and Boatwright, J.S. (eds). In prep. Plants of the Karoo: A Conspectus of the Nama-Karoo and Adjacent Summer-Rainfall Regions of the Northern and Western Cape Provinces. Strelitzia.
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. 2019. Reyemia chasmanthiflora Hilliard. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2023/12/03 |
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