|
Scientific Name | Geissorhiza rupicola Goldblatt & J.C.Manning |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Critically Rare |
Assessment Date | 2021/10/26 |
Assessor(s) | P. Goldblatt, J.E. Victor, R.C. Turner & T. Patel |
Justification | This restricted range habitat specialist has an extent of occurrence (EOO) and area of occupancy (AOO) of 4 km². It is known from one subpopulation, occurring in a gorge within a protected area so it is not threatened. It is therefore listed under the IUCN 3.1. criteria as Least Concern but is nationally categorised as Critically Rare. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | An endemic to Western Cape province of South Africa, known only from the Mosterthoek Twins at the western end of the Hex River Mountains. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Western Altimontane Sandstone Fynbos |
Description | It occurs in moist shady sites in thin soil on rocks, sometimes in cracks on steep cliffs. |
Threats |
| This species has no threats. |
Population |
It is known from one subpopulation which has only been recorded twice in the mid 1980s. However, given its specificity to a remote montane habitat it is likely still extant and the population is inferred to be stable.
|
Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Geissorhiza rupicola Goldblatt & J.C.Manning | Critically Rare | Raimondo et al. (2009) | | Geissorhiza rupicola Goldblatt & J.C.Manning | Rare | Hilton-Taylor (1996) | |
Bibliography |
Goldblatt, P. and manning, J.C. 1995. New species of the southern African genus Geissorhiza (Iridaceae: Ixioideae). Novon 5(2):156-161.
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. 2020. Iridaceae of southern Africa. Strelitzia 42. South African National Biodiversity Institute, Pretoria.
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.
|
Citation |
| Goldblatt, P., Victor, J.E., Turner, R.C. & Patel, T. 2021. Geissorhiza rupicola Goldblatt & J.C.Manning. National Assessment: Red List of South African Plants version . Accessed on 2024/09/14 |
Comment on this assessment
