Taxonomy
Scientific Name
Geissorhiza corrugata Klatt
Higher Classification
Monocotyledons
Family
IRIDACEAE
National Status
Status and Criteria
Least Concern
Assessment Date
2018/10/02
Assessor(s)
P. Goldblatt, D. Raimondo & L. von Staden
Justification
Geissorhiza corrugata has a restricted distribution range, with an extent of occurrence (EOO) of 708 km². It has no severe threats and is therefore not suspected to be in danger of extinction.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape
Range
This species is endemic to the Hantam escarpment around Calvinia.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Roggeveld Karoo, Hantam Karoo
Description
It is localized to seasonally moist, clay soils derived from Karoo shale, on flats and slopes.
Threats
This species has lost about 10% of its habitat to crop cultivation in the past, but there has been no significant expansion of crop fields (less than 1% loss) over 24 years.
Population

This species occurs in large subpopulations in suitable habitat (P. Goldblatt pers. comm.). The population is not suspected to be declining.


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Geissorhiza corrugata KlattRare Raimondo et al. (2009)
Geissorhiza corrugata KlattRare 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.


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., Raimondo, D. & von Staden, L. 2018. Geissorhiza corrugata Klatt. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/07/10

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Distribution map

© J.C. Manning

© J.C. Manning


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