Disperis johnstonii

Taxonomy
Scientific Name
Disperis johnstonii Rchb.f. ex Rolfe
Higher Classification
Monocotyledons
Family
ORCHIDACEAE
National Status
Status and Criteria
Near Threatened* D2
Assessment Date
2009/08/13
Assessor(s)
H. Kurzweil & J.E. Victor
Justification
Known from fewer than five locations on the KwaZulu-Natal coast. Potentially threatened by coastal development, subsistence agriculture, informal settlements and alien plant invasion. Downgraded to NT due to orchids having effective long-distance dispersal allowing colonisation from subpopulations occurring outside of South Africa's borders.
Distribution
Endemism
Not endemic to South Africa
Provincial distribution
KwaZulu-Natal
Range
KwaZulu-Natal coast, also widespread in tropical Africa.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Forest, Savanna
Description
Brachystegia woodland, forest patches, usually in shelter of rocks, 1050-1350 m.
Threats
Urban expansion, agriculture and informal settlements. Alien plants could affect South African subpopulations.
Population
Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Disperis johnstonii Rchb.f. ex RolfeNT D2Raimondo et al. (2009)
Disperis johnstonii Rchb.f. ex RolfeLower Risk - Least Concern Victor (2002)
Bibliography

La Croix, I. and Cribb, P.J. 1995. Orchidaceae. In: G.V. Pope (ed). Flora Zambesiaca 11 (Part 1):1-320. Flora Zambesiaca Managing Committee, London.


Linder, H.P. and Kurzweil, H. 1999. Orchids of southern Africa. A.A. Balkema, Rotterdam.


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.


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
Kurzweil, H. & Victor, J.E. 2009. Disperis johnstonii Rchb.f. ex Rolfe. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2018/12/14

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Distribution map

© B. Wursten

© B. Wursten


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