Scientific Name
Thesium virens E.Mey. ex A.DC.
Higher Classification
National Status
Status and Criteria
Data Deficient - Taxonomically Problematic
Assessment Date
L. von Staden
Thesium is taxonomically problematic and most species are poorly understood. The distribution range and habitat requirements of Thesium virens are very uncertain, and therefore its risk of extinction cannot be assessed at present. It is listed as Data Deficient - Taxonomically Problematic (DDT).
South African endemic
Provincial distribution
Eastern Cape, KwaZulu-Natal
This species is endemic to South Africa, however, its distribution is uncertain. It was described from two vague records from KwaZulu-Natal and the former Transkei (Hill 1915). Records in the national herbarium range from Zululand and the Maputaland coast to the Eastern Cape Drakensberg near Matatiele. Scott-Shaw (1999) suggests that it may be a narrow endemic to northern KwaZulu-Natal around Ngome and Ithala.
Habitat and Ecology
Major system
Major habitats
Mooi River Highland Grassland, Moist Coast Hinterland Grassland, Ithala Quartzite Sourveld, East Griqualand Grassland, Northern Zululand Mistbelt Grassland, Southern Drakensberg Highland Grassland, Drakensberg Afroalpine Heathland, KwaZulu-Natal Coastal Belt Grassland, Maputaland Wooded Grassland, Maputaland Coastal Belt
Its habitat is uncertain, it possibly occurs in open grassland.
Threats to Thesium virens include habitat degradation, habitat loss and invasive alien species.

There is no information available on the population of this species.

Population trend
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Thesium virens E.Mey. ex A.DC.DDT 2020.1
Thesium virens E.Mey. ex A.DC.Least Concern Raimondo et al. (2009)
Thesium virens E.Mey. ex A.DC.Data Deficient Scott-Shaw (1999)

Hill, A.W. 1915. Santalaceae. In: W.T. Thiselton-Dyer (ed). Flora Capensis V Section II (Thymeleaceae-Ceratophylleae):135-212. L. Reeve & Co., Ltd., Ashford.

Hill, A.W. 1915. The Genus Thesium in South Africa, with a key and descriptions of new species. Bulletin of Miscellaneous Information (Royal Gardens, Kew) 1915(1):1-43.

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.

Scott-Shaw, C.R. 1999. Rare and threatened plants of KwaZulu-Natal and neighbouring regions. KwaZulu-Natal Nature Conservation Service, Pietermaritzburg.

von Staden, L. 2017. Thesium virens E.Mey. ex A.DC. National Assessment: Red List of South African Plants version . Accessed on 2024/07/13

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Distribution map

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