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Scientific Name | Gladiolus marlothii G.J.Lewis |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Least Concern |
Assessment Date | 2018/10/02 |
Assessor(s) | D. Raimondo, P. Goldblatt & L. von Staden |
Justification | Gladiolus marlothii is a range-restricted species endemic to the Roggeveld Escarpment. It has an extent of occurance (EOO) of 880 km², and is known from a few, scattered subpopulations. It is not suspected to be in danger of extinction. It is listed at Least Concern. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | It is endemic to South Africa, and is found in the Roggeveld Escarpment and Komsberg. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Roggeveld Shale Renosterveld, Tanqua Karoo, Central Mountain Shale Renosterveld, Nieuwoudtville-Roggeveld Dolerite Renosterveld |
Description | It grows in heavy clay soils on stony slopes and among rocky outcrops near the upper edge of the escarpment at 1 800 m. |
Threats |
| A very small proportion (2%) of this species' habitat has been lost to crop cultivation in the past. Its habitat is however only marginally suited to cultivation, and there has been no expansion of crop fields over 24 years (1990-2014). Parts of the Roggeveld Escarpment is severely overgrazed, but this does not appear to have negatively impacted this species. |
Population |
Gladiolus marlothii is known from only a few scattered subpopulations, and was previously thought to be rare. It is however fairly common in several places along the Roggeveld Escarpment (Goldblatt and Manning 1998). It is likely that more subpopulations exist in inaccessible places along the escarpment.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Gladiolus marlothii G.J.Lewis | LC | 2020.1 | | Gladiolus marlothii G.J.Lewis | Rare | 2017.1 | | Gladiolus marlothii G.J.Lewis | Least Concern | Raimondo et al. (2009) | | Gladiolus marlothii G.J.Lewis | Not Threatened | Hilton-Taylor (1996) | | Gladiolus marlothii G.J.Lewis | Uncertain | Hall et al. (1980) | |
Bibliography |
Goldblatt, P. and Manning, J.C. 1998. Gladiolus in southern Africa. Fernwood Press, Vlaeberg.
Hall, A.V., De Winter, M., De Winter, B. and Van Oosterhout, S.A.M. 1980. Threatened plants of southern Africa. South African National Scienctific Programmes Report 45. CSIR, Pretoria.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Lewis, G.J., Obermeyer, A.A. and Barnard, T.T. 1972. Gladiolus: a revision of the South African species. Journal of South African Botany Supplement 10:1-316. Purnell, Cape Town.
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.
Snijman, D.A. 2013. Plants of the Greater Cape Floristic Region 2: The extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria.
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Citation |
| Raimondo, D., Goldblatt, P. & von Staden, L. 2018. Gladiolus marlothii G.J.Lewis. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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