Babiana blanda

Taxonomy
Scientific Name
Babiana blanda (L.Bolus) G.J.Lewis
Higher Classification
Monocotyledons
Family
IRIDACEAE
National Status
Status and Criteria
Critically Endangered B1ab(iii)
Assessment Date
2015/09/21
Assessor(s)
D. Raimondo, R. Koopman & L. von Staden
Justification
Two severely fragmented remaining subpopulations (EOO 63 km², AOO <5 km²) continue to decline due to ongoing habitat loss and degradation.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Darling to Milnerton and Agter-Paarl.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Swartland Shale Renosterveld, Swartland Granite Renosterveld, Swartland Silcrete Renosterveld
Description
Seasonally damp sandy flats in shale and granite renosterveld.
Threats
Babiana blanda has lost more than 80% of its habitat to urban and agricultural expansion. Both remaining subpopulations occur on isolated fragments. The largest subpopulation occurs in a severely degraded site infested with unmanaged alien invasive plants and subjected to heavy grazing. The population is potentially threatened by expansion of crop fields. The second subpopulation occurs on a municipal commonage where the habitat is still in fairly good condition, but is earmarked for low-cost housing development. Alien invasive plants are present in low densities at this site, and needs to be cleared.
Population

Babiana blanda was frequently collected in the area between Milnerton and Mamre from the 1940s to 1960s, but then not seen again for many years. Iridaceae expert Peter Goldblatt searched for remaining populations of this species for more than 20 years, and the species was presumed extinct. In 2006 a large population numbering 300-500 mature individuals was discovered near Philadelphia, and in 2007 a second, smaller subpopulation was found near Malmesbury. Subpopulations are isolated and continue to decline due to ongoing habitat degradation at both sites.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Babiana blanda (L.Bolus) G.J.LewisCR B1ab(iii)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.


Manning, J., Goldblatt, P. and Snijman, D. 2002. The color encyclopedia of Cape bulbs. Timber Press, Portland/Cambridge.


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., Koopman, R. & von Staden, L. 2015. Babiana blanda (L.Bolus) G.J.Lewis. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/11/20

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Distribution map

© R. Koopman

© R. Koopman

© R. Koopman

© R. Koopman

© R. Koopman

© R. Koopman

© J.C. Manning


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