Taxonomy
Scientific Name
Lachenalia stayneri W.F.Barker
Higher Classification
Monocotyledons
Family
HYACINTHACEAE
National Status
Status and Criteria
Vulnerable B1ab(ii,iii,iv,v)+2ab(ii,iii,iv,v)
Assessment Date
2020/03/18
Assessor(s)
N.A. Helme, G.D. Duncan & D. Raimondo
Justification
Lachenalia stayneri is a rare, range-restricted species with an extent of occurrence (EOO) of 41-85 km². Recent field observations indicate that it persists at five locations, but it is also possibly still present at two more locations known through historical records. It continues to decline due to severe, ongoing habitat loss.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
This species is localized to a small area in the Western Cape, where it occurs in the Breede River Valley around Worcester and Robertson, extending to the Hex River Valley around De Doorns.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Robertson Karoo, Breede Shale Renosterveld, Breede Alluvium Fynbos, Breede Sand Fynbos
Description
It occurs on gentle lower slopes and flats with stony clay soils in renosterveld and succulent karoo.
Threats
This species is threatened by severe, ongoing habitat loss to urban expansion around Worcester. In the Hex River Valley it was last recorded in 1962, and is suspected to be locally extinct due to habitat loss to vineyards. The population has also been reduced and fragmented by vineyard expansion in the Breede River Valley between Rawsonville, Goudini and Worcester. It was recorded around De Wet between Worcester and De Doorns in the 1970s, and may also be locally extinct in this area due to habitat loss to vineyards.
Population

This rare and localized species' population is being continuously reduced and fragmented due to severe, ongoing habitat loss. Land cover data indicate that it has lost 4% of its habitat between 1990 and 2014.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Lachenalia stayneri W.F.BarkerEN B1ab(ii,iii,iv,v)Raimondo et al. (2009)
Bibliography

Barker, W.F. 1979. Ten more new species of Lachenalia (Liliaceae). Journal of South African Botany 45(2):193-219.


Duncan, G.D. 2012. The genus Lachenalia. Kew Publishing, Royal Botanic Gardens, Kew.


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., Goldblatt, P. and Snijman, D. 2002. The color encyclopedia of Cape bulbs. Timber Press, Portland/Cambridge.


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., Duncan, G.D. & Raimondo, D. 2020. Lachenalia stayneri W.F.Barker. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/08/11

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Distribution map


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