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Scientific Name | Agathosma glandulosa (Thunb.) Sond. |
Higher Classification | Dicotyledons |
Family | RUTACEAE |
Synonyms | Diosma glandulosa Thunb., Hartogia glandulosa Kuntze |
National Status |
Status and Criteria | Endangered A2c; B1ab(ii,iii,iv,v) |
Assessment Date | 2006/07/18 |
Assessor(s) | T. Trinder-Smith & D. Raimondo |
Justification | A population reduction of at least 50% is estimated based on 70% habitat loss to wheat and vineyard cultivation in the past 70 years (generation length >50 years). Its extent of occurrence (EOO) is less than 2000 km² and eight severely fragmented remaining subpopulations continue to decline due to ongoing habitat loss to urban development, expanding crop cultivation and overgrazing. It is therefore assessed as Endangered under criteria A and B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is found in Malmesbury. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swartland Shale Renosterveld, Swartland Granite Renosterveld, Swartland Alluvium Renosterveld, Boland Granite Fynbos, Atlantis Sand Fynbos |
Description | Plants grow in renosterveld on Malmesbury shale. |
Threats |
| Cultivation for wheat and vineyards farming is a past threat, which has left more than 70% of this species' habitat transformed. Most of the transformation took place since 1940, which is less than 3 generations of this long-lived resprouting species (generation time is >30 years). As renosterveld fragments are often open to livestock, many are grazed and trampled by livestock (T.Trinder-Smith). Many fragments around Malmesbury are being lost to urbanization. |
Population |
Population trend | Decreasing |
Conservation |
| It forms part of the Renosterveld conservation plan. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Agathosma glandulosa (Thunb.) Sond. | EN A2c; B1ab(ii,iii,iv,v) | Raimondo et al. (2009) | | Agathosma glandulosa (Thunb.) Sond. | VU B1B2c | Victor (2002) | | Agathosma glandulosa (Thunb.) Sond. | Vulnerable | Hilton-Taylor (1996) | |
Bibliography |
Bolus Herbarium. The genus Agathosma, specimen data from the Bolus Herbarium Collections database. University of Cape Town, Cape Town. Downloaded on 2007.
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.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical 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.
Victor, J.E. 2002. South Africa. In: J.S. Golding (ed), Southern African plant Red Data Lists. Southern African Botanical Diversity Network Report 14 (pp. 93-120), SABONET, Pretoria.
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Citation |
| Trinder-Smith, T. & Raimondo, D. 2006. Agathosma glandulosa (Thunb.) Sond. National Assessment: Red List of South African Plants version . Accessed on 2025/07/06 |
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