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Scientific Name | Babiana rubrocyanea (Jacq.) Ker Gawl. |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
Common Names | Blue-and-red Babiana (e), Rooibloubobbejaantjie (a) |
National Status |
Status and Criteria | Endangered B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) |
Assessment Date | 2021/04/21 |
Assessor(s) | L. von Staden |
Justification | This species has a restricted distribution range, with an extent of occurrence (EOO) of 439 km², and an area of occupancy (AOO) of 80 km². Around eight severely fragmented subpopulations continue to decline due to ongoing habitat loss and degradation. It is therefore listed as Endangered under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This Western Cape Province local endemic occurs between Darling and Mamre. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swartland Granite Renosterveld, Swartland Alluvium Renosterveld |
Description | It grows on stony and sandy granitic slopes in renosterveld. |
Threats |
| More than 80% of this species' lowland renosterveld habitat has been lost to crop cultivation in the past, and only small, isolated fragments remain. Ongoing threats include urban expansion around Darling; spreading, unmanaged alien invasive plants, particularly grasses; and habitat degradation due to heavy grazing of small fragments. Some subpopulations occur in renosterveld that is seldom burnt, which can be detrimental to fynbos species requiring fire to regenerate. |
Population |
All remaining subpopulations occur on small renosterveld fragments. Between eight and ten subpopulations remain. Subpopulations are generally small, and five of these are isolated due to extensive loss of surrounding renosterveld to crop fields. The population is therefore considered severely fragmented and continues to decline due to ongoing habitat loss and degradation.
With regards to population size, lower numbers are being recorded in recent years. In 2013, 100 individuals were observed on a farm close to Darling. A further 100 and 500 individuals were recorded in Darling Renosterveld Reserve. In 2019, less than 10 individuals were seen in Darling. In 2020, 100 individuals were observed in the Swartland Local Municipality, and an additional 10 were seen in an area of 50m².
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Babiana rubrocyanea (Jacq.) Ker Gawl. | EN B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) | 2017.1 | | Babiana rubrocyanea (Jacq.) Ker Gawl. | VU D2 | Raimondo et al. (2009) | |
Bibliography |
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.
Goldblatt, P. and Manning, J.C. 2007. A revision of the southern African genus Babiana, Iridaceae, Crocoideae. Strelitzia 18:1-97. South African National Biodiversity Institute, Pretoria.
Goldblatt, P. and Manning, J.C. 2020. Iridaceae of southern Africa. Strelitzia 42. 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 |
| von Staden, L. 2021. Babiana rubrocyanea (Jacq.) Ker Gawl. National Assessment: Red List of South African Plants version . Accessed on 2024/09/08 |
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