Lillie's Cycad

Taxonomy
Scientific Name
Encephalartos dyerianus Lavranos & D.L.Goode
Higher Classification
Gymnosperms
Family
ZAMIACEAE
Synonyms
Encephalartos graniticolus Vorster, Robbertse & S.van der Westh.
Common Names
Broodboom (a), Cycad (e), Lillie Cycad (e), Lillie-broodboom (a), Lillie's Cycad (e), Lowveld Cycad (e)
National Status
Status and Criteria
Critically Endangered B1ab(v)+2ab(v)
Assessment Date
2009/10/31
Assessor(s)
J.S. Donaldson
Justification
AOO 0.3 km², now known from one location (excluding the few isolated plants which are not reproductive). Although it is now relatively secure within a private reserve, the population was reduced by collectors in the 1970s and ongoing illegal collecting is continuing.
Distribution
Endemism
South African endemic
Provincial distribution
Limpopo
Range
Phalaborwa.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Gravelotte Rocky Bushveld
Description
Open grassland and shrubland on the slopes of low granite hills.
Threats
The population of Encephalartos dyerianus has been severely reduced due to illegal removal of mature plants for ornamental/horticultural purposes. Reproductive failure may occur if more mature individuals are removed from the population.
Population

In the 1970s the population was approximately 600 plants, but was severely reduced by collectors, and currently one viable subpopulation and a few isolated individuals remain. Population decline due to illegal collecting is still ongoing: 107 plants were removed in January 2008.


Population trend
Decreasing
Conservation
Protected within a private game reserve.
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Encephalartos dyerianus Lavranos & D.L.GoodeCR B1ab(i,v)+2ab(i,v)Raimondo et al. (2009)
Encephalartos dyerianus Lavranos & D.L.GoodeEndangered Hilton-Taylor (1996)
Bibliography

Donaldson, J.S. 2003. Cycads. Status survey and conservation action plan. IUCN/SSC Cycad Specialist Group, Gland, Switzerland; Cambridge, UK.


Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical 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.


Robbertse, P.J., Vorster, P. and Van der Westhuizen, S. 1988. Encephalartos graniticolus (Zamiaceae): a new species from the north-eastern Transvaal. South African Journal of Botany 54(4):363-366.


Vorster, P. 1992. Focus on Encephalartos dyerianus. Encephalartos 29:3-7.


Citation
Donaldson, J.S. 2009. Encephalartos dyerianus Lavranos & D.L.Goode. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2024/02/24

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Distribution map

© J.S. Donaldson


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