Taxonomy
Scientific Name
Zaluzianskya pilosissima Hilliard
Higher Classification
Dicotyledons
Family
SCROPHULARIACEAE
National Status
Status and Criteria
Least Concern
Assessment Date
2019/11/08
Assessor(s)
D. Raimondo
Justification
Zaluzianskya pilosissima is an endemic species to the western part of the Upper Karoo, with an extent of occurrence (EOO) of 19 730 km². While only recorded from 11 collection localities this part of South Africa is extremely poorly sampled and it is suspected to occur in many more places. This annual species, dependent on rain for growth and flowering was only recorded once during the Karoo BioGaps project which surveyed more than 60% of its range between 2016 and 2018. The extent of decline is however incredibly difficult to estimate. As an annual, this species should be able to survive long periods of drought as seeds in the seedbank. It is therefore listed as Least Concern. However should drought conditions continue for the next 10 years this species should be uplisted into a category of threat.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape
Range
This species is endemic to South Africa, and is found from Bushmanland to Upper Karoo to Roggeveld.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Roggeveld Karoo, Upper Karoo Hardeveld, Western Upper Karoo, Roggeveld Shale Renosterveld
Description
It occurs in sandy and gravelly flats and streambeds. It is an annual species dependent on rain to be recorded.
Threats
Zaluzianskya pilosissima is potentially threatened by increasing frequency of drought as a result of climate change. The entire range of this species has experienced below average rainfall and above average temperatures for four consecutive years since 2016.
Population

There is no information available on the population of this species.


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Zaluzianskya pilosissima HilliardLeast Concern Raimondo et al. (2009)
Bibliography

Magee, A.R. and Boatwright, J.S. (eds). In prep. Plants of the Karoo: A Conspectus of the Nama-Karoo and Adjacent Summer-Rainfall Regions of the Northern and Western Cape Provinces. Strelitzia.


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
Raimondo, D. 2019. Zaluzianskya pilosissima Hilliard. National Assessment: Red List of South African Plants version . Accessed on 2024/05/20

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Distribution map


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