Taxonomy
Scientific Name
Romulea lilacina J.C.Manning & Goldblatt
Higher Classification
Monocotyledons
Family
IRIDACEAE
National Status
Status and Criteria
Vulnerable D2
Assessment Date
2007/01/16
Assessor(s)
N.A. Helme & D. Raimondo
Justification
Known from the type locality from the banks of the Riet River, where it occurs on deep sands. Forty per cent of this habitat within the immediate area of the type locality has been transformed by crop cultivation. This is a potential threat to the only known subpopulation.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Koue Bokkeveld.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Swartruggens Quartzite Fynbos, Kouebokkeveld Alluvium Fynbos
Description
Deep, sandy soils along river banks.
Threats
The species is restricted to a highly specialized habitat, and there are no immediate threats in the vicinity of the only known subpopulation. Small sections of the riverbank further upstream has been cultivated, but there has been no expansion of crop cultivation in the past 15-20 years. Further habitat loss to crop cultivation remains a potential threat.
Population

Two observations of the same population in 2000 and 2001 recorded respectively 'scattered plants' and 'abundant'. The species is probably locally common in its highly specialized habitat, but the number of flowering plants is dependent on rainfall. It is currently known from only one subpopulation, but is likely to occur in similar alluvial washes elsewhere in the Swartruggens-Koue Bokkeveld area.


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Romulea lilacina J.C.Manning & GoldblattVU D2Raimondo et al. (2009)
Bibliography

Manning, J.C. and Goldblatt, P. 2001. A synoptic review of Romulea (Iridaceae: Crocoideae) in sub-Saharan Africa, the Arabian Peninsula and Socotra including new species, biological notes, and a new infrageneric classification. Adansonia 23(1):59-108.


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
Helme, N.A. & Raimondo, D. 2007. Romulea lilacina J.C.Manning & Goldblatt. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2021/09/23

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Distribution map


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