Taxonomy
Scientific Name
Galenia glandulifera Bittrich
Higher Classification
Dicotyledons
Family
AIZOACEAE
National Status
Status and Criteria
Near Threatened B1ab(iii,iv,v)
Assessment Date
2019/10/23
Assessor(s)
D. Raimondo
Justification
Galenia glandulifera has an extent of occurrence (EOO) of 18 180 km². There are between 10 and 15 locations, and it is suspected to be declining due to overgrazing.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape, Western Cape
Range
This species is endemic to the Great Karoo, where it occurs from Whitehill to Prince Albert.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Nama Karoo
Description
It occurs in stony soil in karroid shrubland.
Threats
Some Galenia species are known to be unpalatable and increase under conditions of overgrazing, but this species appears to be sensitive to overgrazing. Recent observations are mainly from road verges, which are areas between roads and fences where there is less grazing pressure, and notes on specimens also indicate that it is not found in vegetation that has been grazed. Another indication of its sensitivity to grazing is that it was only collected once during extensive recent field surveys as part of the Karoo BioGaps Project (2015-2018). Ongoing aridification of the Karoo linked to climate change is also likely to place pressure on this species.
Population

This species is known from 11 extant subpopulations, but is possibly under-collected. Notes on herbarium specimens indicate that this species is occasional in its distribution. A continuing decline is inferred from widespread overgrazing occurring across its range.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Galenia glandulifera BittrichLeast 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. Galenia glandulifera Bittrich. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/10/28

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Distribution map


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