Taxonomy
Scientific Name
Ixia vinacea G.J.Lewis
Higher Classification
Monocotyledons
Family
IRIDACEAE
National Status
Status and Criteria
Critically Endangered B1ab(ii,iii,v)+2ab(ii,iii,v)
Assessment Date
2015/06/30
Assessor(s)
P. Goldblatt, J.C. Manning, I. Ebrahim & L. von Staden
Justification
EOO <2 km², about 500 plants remaining at a single location continue to decline due to ongoing habitat degradation and competition from alien invasive plants.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Tulbagh.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Breede Shale Fynbos, Breede Alluvium Fynbos
Description
Stony clay flats.
Threats
This species is endemic to Breede Alluvium Fynbos, a lowland vegetation type of which less than 40% remains intact, after extensive loss and fragmentation due to agricultural expansion. Habitat loss and degradation continues, particularly due to inappropriate fire management, overgrazing and spreading, unmanaged alien invasive plants.
Population

This species appears to have had a very limited original distribution, occurring from the town of Tulbagh along the Breede River's alluvial flats to Wolseley, a distance of about 20 km. Surveys of all remaining lowland fragments in the upper Breede Valley in 2006 and 2007 recorded a single remaining subpopulation of about 500 mature individuals scattered across three fragments on a farm south of Tulbagh. These plants are all affected by ongoing habitat degradation due to overgrazing and spreading alien invasive plants, and is thus considered one location.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Ixia vinacea G.J.LewisCR B1ab(ii,iii,v)+2ab(ii,iii,v)2015.1
Ixia vinacea G.J.LewisEN B1ab(ii,iii,v)+2ab(ii,iii,v)Raimondo et al. (2009)
Ixia vinacea G.J.LewisIndeterminate Hilton-Taylor (1996)
Bibliography

De Vos, M.P. 1999. Ixia. In: O.A. Leistner (ed). Flora of Southern Africa 7 Iridaceae Part 2: Ixioideae, Fascicle 1: Ixieae:3-87. National Botanical Institute, Pretoria.


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. 2016. Systematics of the southern African genus Ixia L. (Iridaceae): 5. Synopsis of section Ixia, including five new species. South African Journal of Botany 104:175-198.


Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.


Lewis, G.J. 1962. South African Iridaceae. The genus Ixia. Journal of South African Botany 28:45-195.


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
Goldblatt, P., Manning, J.C., Ebrahim, I. & von Staden, L. 2015. Ixia vinacea G.J.Lewis. National Assessment: Red List of South African Plants version . Accessed on 2024/06/14

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Distribution map

© I. Ebrahim

© I. Ebrahim


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