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Scientific Name | Freesia marginata J.C.Manning & Goldblatt |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
Common Names | Breede Valley Freesia (e) |
National Status |
Status and Criteria | Critically Endangered B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) |
Assessment Date | 2022/01/17 |
Assessor(s) | J.C. Manning, D. Raimondo & N.A. Helme |
Justification | This is a rare, range-restricted species, with an extent of occurrence (EOO) and an area of occupancy (AOO) of 4 km². It is known from one location and is declining due to ongoing habitat loss as a result of agricultural expansion. The type locality was lost to ploughing between 2015 and 2020. It is therefore listed as Critically Endangered under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | It is endemic to South Africa, and is found in the Breede River Valley between Worcester and Robertson in the Western Cape Province. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Robertson Karoo, Breede Alluvium Renosterveld, Breede Sand Fynbos |
Description | It occurs in open succulent karoo shrubland, in washes on sandstone-shale transitions. |
Threats |
| This species is threatened by ongoing habitat loss to expanding olive orchards and vineyards. This species' habitat is already more than 50% transformed, and loss is continuing. |
Population |
It occurs in small subpopulations on fragments among expanding orchards and vineyards. The overall population has a decreasing trend. The type locality had fewer than 100 plants (J.C. Manning, pers. obs. 2002) and has been lost to ploughing (between 2015 and 2020). Only one subpopulation remains extant and there are fewer than 100 mature individuals there.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Freesia marginata J.C.Manning & Goldblatt | EN D | Raimondo et al. (2009) | |
Bibliography |
Manning, J.C. and Goldblatt, P. 2005. A new species of Freesia (Iridaceae: Crocoideae) from the succulent karoo, South Africa, and notes on nomenclature and infrageneric classification. Novon 15(1):168-172.
Manning, J.C. and Goldblatt, P. 2010. Botany and horticulture of the genus Freesia. Strelitzia 27:1-114. South African National Biodiversity 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.
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Citation |
| Manning, J.C., Raimondo, D. & Helme, N.A. 2022. Freesia marginata J.C.Manning & Goldblatt. National Assessment: Red List of South African Plants version . Accessed on 2024/12/06 |
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