Taxonomy
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.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Reyemia chasmanthiflora HilliardRare Raimondo et al. (2009)
Reyemia chasmanthiflora HilliardRare 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.


Citation
Raimondo, D. 2019. Reyemia chasmanthiflora Hilliard. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/10/20

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Distribution map


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