Aloe chlorantha

Taxonomy
Scientific Name
Aloe chlorantha Lavranos
Higher Classification
Monocotyledons
Family
ASPHODELACEAE
National Status
Status and Criteria
Vulnerable D2
Assessment Date
2005/05/19
Assessor(s)
J.E. Victor
Justification
A rare, range-restricted species known from four locations. Potentially threatened by changes in native species dynamics and poor recruitment. Rock hyrax populations have greatly increased due to the decline of predators in many areas where this species occurs, and they are capable of causing extensive damage to vegetation. The impact of rock hyraxes on inflorescences may explain the lack of recruitment.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape
Range
Williston and Fraserburg.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Upper Karoo Hardeveld
Description
Nama Karoo, grows among dolerite boulders at the tops of ridges.
Threats
Many of the older plants are affected by an insect, the larva of which eats into the centre of the crown of leaves, eventually killing the whole plant. Apparent lack of recruitment is also concerning - there is a total absence of juveniles and seedlings (Glen and Hardy 2000). The inflorescences are eaten by rock hyraxes especially during times of drought. Rock hyrax populations have greatly increased due to the decline of predators in many areas, and they are capable of causing extensive damage to vegetation. The impact of rock hyraxes on inflorescences may explain the lack of recruitment.
Population

Subpopulations are very small. The Fraserburg subpopulation numbers some 25 plants, with no seedlings present (H.F. Glen pers. comm. 1986).


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Aloe chlorantha LavranosVU D2Raimondo et al. (2009)
Aloe chlorantha LavranosEN B1B2eVictor (2002)
Aloe chlorantha LavranosEndangered Hilton-Taylor (1996)
Bibliography

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


Lavranos, J.J. 1973. Aloe chlorantha: a new species from the south western Karoo (South Africa). Journal of South African Botany 39(1):85-90.


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.


Reynolds, G.W. 1969. The Aloes of South Africa. A.A. Balkema, Cape Town.


Van Wyk, B.-E. and Smith, G. 1996. Guide to the aloes of South Africa. Briza Publications, Pretoria.


Victor, J.E. 2002. South Africa. In: J.S. Golding (ed), Southern African plant Red Data Lists. Southern African Botanical Diversity Network Report 14 (pp. 93-120), SABONET, Pretoria.


Citation
Victor, J.E. 2005. Aloe chlorantha Lavranos. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2018/12/14

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Distribution map

© E.J. van Jaarsveld

© E.J. van Jaarsveld

© E.J. van Jaarsveld


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