Ixia aurea J.C.Manning & Goldblatt

Taxonomy
Scientific Name
Ixia aurea J.C.Manning & Goldblatt
Higher Classification
Monocotyledons
Family
IRIDACEAE
National Status
Status and Criteria
EN B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)
Assessment Date
2012/11/01
Assessor(s)
D. Raimondo & L. von Staden
Justification
EOO 2426 km², only a few, severely fragmented subpopulations remain and continue to decline due to ongoing habitat loss and degradation.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Piketberg to Citrusdal and Darling.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Fynbos
Description
Granite fynbos.
Threats
Ixia aurea occurs in one of the most highly transformed areas of the Western Cape (EOO >80% transformed), and its habitat has been fragmented by crop cultivation. A few isolated subpopulations remain, and these are threatened by ongoing habitat loss and degradation due to still expanding crop cultivation, spreading of alien invasive plants - especially alien grasses due to fertilizer runoff from surrounding crop fields, overgrazing and fire exclusion.
Population

An extremely rare species, known from very few collections (Goldblatt and Manning 2011). The population is fragmented, and currently known from only three isolated subpopulations. The species may however also be overlooked, as it is very similar to two other common yellow-flowered species, I. maculata and I. dubia (Goldblatt and Manning 2011).


Population trend
Decreasing
Assessment History
Date
Taxon assessed
Status and Criteria
Citation/Red List version
2012Ixia aurea J.C.Manning & GoldblattVU D22012.1
2009Ixia aurea J.C.Manning & GoldblattVU D2Raimondo 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. 2011. Systematics of the southern African genus Ixia (Iridaceae). 3. Sections Hyalis and Morphixia. Bothalia 41(1):83-134.


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. & von Staden, L. 2012. Ixia aurea J.C.Manning & Goldblatt. National Assessment: Red List of South African Plants version 2014.1. Accessed on 2014/09/23

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Distribution map


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