Taxonomy
Scientific Name
Gladiolus bilineatus G.J.Lewis
Higher Classification
Monocotyledons
Family
IRIDACEAE
National Status
Status and Criteria
Vulnerable D1+2
Assessment Date
2006/07/24
Assessor(s)
P. Goldblatt & D. Raimondo
Justification
A very rare species known from five subpopulations, all with low numbers of individuals. We estimate the total population to be fewer than 1000 mature individuals. Potentially threatened by livestock overgrazing and alien plant invasion.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Langeberg Mountains.
Habitat and Ecology
Major system
Terrestrial
Major habitats
South Langeberg Sandstone Fynbos, Swellendam Silcrete Fynbos
Description
Fynbos in coarse, sandstone-derived soils or in heavier, loamy sand on sandstone or shale.
Threats
Habitat degradation, Invasive Alien Species (direct effects), Habitat loss
Population
Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Gladiolus bilineatus G.J.LewisVU D1+2Raimondo et al. (2009)
Gladiolus bilineatus G.J.LewisRare Hilton-Taylor (1996)
Gladiolus bilineatus G.J.LewisUncertain Hall et al. (1980)
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.


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.


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. 2006. Gladiolus bilineatus G.J.Lewis. National Assessment: Red List of South African Plants version . Accessed on 2024/04/14

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Distribution map


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