Nemesia elata

Taxonomy
Scientific Name
Nemesia elata K.E.Steiner
Higher Classification
Dicotyledons
Family
SCROPHULARIACEAE
National Status
Status and Criteria
Vulnerable B1ab(iii,v)+2ab(iii,v)
Assessment Date
2011/06/19
Assessor(s)
J.H. Vlok, D. Raimondo & L. von Staden
Justification
This species was known since its discovery from only a single location on the top of Montagu Pass. It was only recently described (2010) and further surveys of herbarium material and field surveys of the Outeniqua and Langeberg mountains confirmed at least six locations within an EOO of 351 km². This extremely rare habitat specialist can be locally common after fires, but is threatened by inappropriate fire management, alien invasive plants, as well as road and other infrastructure construction.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Langeberg and Outeniqua mountains between Swellendam and George.
Habitat and Ecology
Major system
Terrestrial
Major habitats
South Outeniqua Sandstone Fynbos, South Langeberg Sandstone Fynbos
Description
Moist, steep slopes in gorges and ravines.
Threats
Threatened by infrastructural development (roads and railways), infestation by aliens and inappropriate fire management, this species only flowers after fire and requires intense burns, recently fires have been managed and intense fires are now rare. (J. Vlok 2007).
Population

The species is very common after fire (Steiner 2010), but dies back in mature vegetation (J. Vlok pers. comm.). It appears to be rare, and requiring very specific fire conditions to flower. It may also be overlooked due to the combination of the specialized, and often inaccessible habitat and sporadic flowering.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Nemesia sp. nov. (Fourcade 1594 BOL)CR B1ab(iii,v)Raimondo et al. (2009)
Bibliography

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.


Steiner, K.E. 2010. Two new species of Nemesia (Scrophulariaceae) from the southern Cape, south Africa. Bothalia 40(2):161-166.


Citation
Vlok, J.H., Raimondo, D. & von Staden, L. 2011. Nemesia elata K.E.Steiner. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2019/04/20

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Distribution map


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