Taxonomy
Scientific Name
Psoralea diturnerae A.Bello, C.H.Stirt. & Muasya
Higher Classification
Dicotyledons
Family
FABACEAE
National Status
Status and Criteria
Endangered B1ab(iii,v)+2ab(iii,v)
Assessment Date
2015/08/21
Assessor(s)
D. Turner, A. Bello, C.H. Stirton, S.B.M. Chimphango, M. Muasya, D. van der Colff & L. von Staden
Justification
A localized species (EOO <10 km²), occurring at two to three locations and declining due to competition from alien invasive plants.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Northern slopes of the Outeniqua Mountains at Camferskloof.
Habitat and Ecology
Major system
Terrestrial
Major habitats
South Outeniqua Sandstone Fynbos, North Outeniqua Sandstone Fynbos
Description
Sandstone fynbos.
Threats
This species has lost some habitat to timber plantations in the northern part of its range in the past, but remaining habitat is protected, and habitat loss is no longer a threat. Alien invasive plants are however present within the habitat across the species' range, and one subpopulation occurring on the edge of a timber plantation is being impacted by dense, spreading infestations of wattles, pines and hakeas. Ongoing clearing and management of alien invasive plants is required to prevent this highly localized species from being outcompeted in its native habitat.
Population

This species has a limited distribution range, and occurs in several small, scattered stands of fewer than 50 mature individuals. There are two subpopulations, the northern subpopulation is suspected to be declining due to dense alien plant infestations, with some dead plants observed in this subpopulation (N. van Berkel pers. obs. 2015). The second subpopulation, further south, also has alien plants present in the habitat, but these are being cleared (D. Turner pers. obs. 2014).


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Psoralea diturnerae A.Bello, C.H.Stirt. & MuasyaEN B1ab(iii,v)+2ab(iii,v)2015.1
Bibliography

Bello, A., Stirton, C.H., Chimphango, S.B.M. and Muasya, A.M. 2015. Psoralea diturnerae and P. vanberkelae (Psoraleeae, Fabaceae): two new species restricted to the Core Cape Region of South Africa. PhytoKeys 44:97-107.


Citation
Turner, D., Bello, A., Stirton, C.H., Chimphango, S.B.M., Muasya, M., van der Colff, D. & von Staden, L. 2015. Psoralea diturnerae A.Bello, C.H.Stirt. & Muasya. National Assessment: Red List of South African Plants version . Accessed on 2024/05/20

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Distribution map

© D. Turner

© D. Turner

© D. Turner

© D. Turner

© D. Turner

© D. Turner


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