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Scientific Name | Geissorhiza purpureolutea Baker |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
Synonyms | Geissorhiza sulphurea Schltr. (in part), Geissorhiza sulphurea Schltr. var. sulphurea |
National Status |
Status and Criteria | Near Threatened B1ab(ii,iii,v) |
Assessment Date | 2012/10/19 |
Assessor(s) | P. Goldblatt, D. Raimondo & R.C. Turner |
Justification | EOO 3100 km², between 10 and 20 locations remain after extensive past habitat loss crop cultivation. Remaining subpopulations continue to decline due to urban expansion and encroachment from invasive alien vegetation. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Piketberg to Paarl and Tulbagh. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Fynbos |
Description | Wet, sandy gravel flats, poorly drained. |
Threats |
| This species' lowland habitat is extensively transformed, mainly for crop cultivation. Plants are now confined to small fragments and continue to decline due to ongoing habitat loss primarily due to urban expansion and alien plant invasion. |
Population |
Subpopulations are generally small ranging from 50 to 250 plants, the largest monitored subpopulation consists of about 1000 mature individuals.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Geissorhiza purpureolutea Baker | VU B1ab(ii,iii,iv,v) | 2012.1 | | Geissorhiza purpureolutea Baker | VU B1ab(ii,iii,iv,v) | Raimondo et al. (2009) | | Geissorhiza purpureolutea Baker | Insufficiently Known | Hilton-Taylor (1996) | |
Bibliography |
Goldblatt, P. 1985. Systematics of the southern African genus Geissorhiza (Iridaceae-Ixioideae). Annals of the Missouri Botanical Garden 72(2):277-447.
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.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical 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 |
| Goldblatt, P., Raimondo, D. & Turner, R.C. 2012. Geissorhiza purpureolutea Baker. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2023/12/04 |
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