Taxonomy
Scientific Name
Sisyranthus fanniniae N.E.Br.
Higher Classification
Dicotyledons
Family
APOCYNACEAE
National Status
Status and Criteria
Vulnerable B1ab(iii)+2ab(iii)
Assessment Date
2007/05/17
Assessor(s)
C.R. Scott-Shaw, A. Nicholas, I.M. Johnson & L. von Staden
Justification
This genus is very poorly known and data for this species are uncertain. However, the estimated range is very restricted (EOO 200-1400 km²), there are very few records which indicate that it is rare (estimated less than 10 locations) and there is evidence of continuing decline in the habitat from afforestation in the vicinity of the type locality and from overgrazing by livestock elsewhere. Members of the Asclepiadineae are, despite their milky latex, very sensitive to grazing and tend to disappear from heavily grazed areas.
Distribution
Endemism
South African endemic
Provincial distribution
KwaZulu-Natal
Range
Impendle to Dargle, possibly also Underberg and Nsikeni.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Midlands Mistbelt Grassland, Moist Coast Hinterland Grassland, Drakensberg Foothill Moist Grassland, Pondoland-Ugu Sandstone Coastal Sourveld
Description
Montane grassland, 1600-1800 m.
Threats
Afforestation is a serious ongoing threat in the vicinity of the type locality, and much of Dargle Farm and surrounds are under plantations. An adjoining farm has recently been converted to plantations. There are however some good grasslands remaining on Carlisle, Selsley and Maritzdal (farms formerly part of the Dargle estate), where this species could still be found if efforts were made to locate it (I. Johnson pers. comm.). Around Mpendle much of the land is communally owned, and overgrazing and subsistence farming are causing degradation of grasslands (C.R. Scott-Shaw pers. comm.). Members of the Asclepiadineae are, despite their milky latex, very sensitive to grazing and tend to disappear from heavily grazed areas (A. Nicholas pers. comm.). At Ntsikeni much of the mountain slopes are also under forestry plantations.
Population
Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Sisyranthus fanniniae N.E.Br.VU B1ab(iii)Raimondo et al. (2009)
Sisyranthus fanniniae N.E.Br.VU Scott-Shaw (1999)
Sisyranthus fanniniae N.E.Br.Vulnerable Hilton-Taylor (1996)
Bibliography

Brown, N.E. 1909. Asclepiadeae. In: W.T. Thiselton-Dyer (ed). Flora Capensis IV Section I (Vacciniaceae to Gentianeae):518-1036. Lovell Reeve & Co., Ltd., London.


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


Pooley, E. 2005. A field guide to wild flowers of KwaZulu-Natal and the Eastern Region. Natal Flora Publications Trust, Durban.


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.


Scott-Shaw, C.R. 1999. Rare and threatened plants of KwaZulu-Natal and neighbouring regions. KwaZulu-Natal Nature Conservation Service, Pietermaritzburg.


Citation
Scott-Shaw, C.R., Nicholas, A., Johnson, I.M. & von Staden, L. 2007. Sisyranthus fanniniae N.E.Br. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2022/05/16

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Distribution map


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