Taxonomy
Scientific Name
Chrysocoma flava Ehr.Bayer
Higher Classification
Dicotyledons
Family
ASTERACEAE
National Status
Status and Criteria
Endangered B1ab(i,ii,iii,iv,v)
Assessment Date
2015/07/13
Assessor(s)
N.A. Helme, D. Raimondo, D. van der Colff & L. von Staden
Justification
EOO 1047 km², and known from two, possibly three locations, but may be under-sampled. More than 80% of its habitat has already been lost to agricultural expansion, and population decline due to ongoing habitat loss and degradation continues.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Overberg between Bredasdorp and Riversdale.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Eastern Ruens Shale Renosterveld, Swellendam Silcrete Fynbos
Description
Shale and silcrete soils.
Threats
Chrysocoma flava occurs in Critically Endangered Eastern Rûens Shale Renosterveld, of which at least 80% has already been lost to expanding crop fields, and only small isolated fragments remain. Recent field observations indicate that remaining subpopulations are threatened by ongoing habitat degradation due to overstocking of habitat fragments.
Population

This species was previously known only from the type collection from near Riversdale, dating from 1929. Recently, it has been observed at two locations between Bredasdorp and Swellendam, suggesting that it has a wider range across the eastern Overberg than previously known, and is quite likely overlooked and more common than records indicate (J. Groenewald pers. comm.). Less than 20% of its habitat however remains intact, and most remaining subpopulations are likely to be confined to isolated fragments. More field surveys are needed to better understand the range size and abundance of this species.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Chrysocoma flava Ehr.BayerEN B1ab(i,ii,iii,iv,v)2015.1
Chrysocoma flava Ehr.BayerData Deficient Raimondo et al. (2009)
Bibliography

Bayer, E. 1981. Revision der Gattung Chrysocoma L. (Asteraceae-Astereae). Mitteilungen der Botanischen Staatssammlung München 17:259-392.


Goldblatt, P. and Manning, J.C. 2000. Cape Plants: A conspectus of the Cape Flora of South Africa. Strelitzia 9. National Botanical Institute, Cape Town.


Manning, J.C. and Goldblatt, P. 2012. Plants of the Greater Cape Floristic Region 1: The Core Cape Flora. Strelitzia 29. South African National Biodiversity Institute, Pretoria.


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., van der Colff, D. & von Staden, L. 2015. Chrysocoma flava Ehr.Bayer. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2022/05/17

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Distribution map


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