Tephrosia natalensis subsp. pseudocapitata

Taxonomy
Scientific Name
Tephrosia natalensis H.M.L.Forbes subsp. pseudocapitata (H.M.L.Forbes) Schrire
Higher Classification
Dicotyledons
Family
FABACEAE
Synonyms
Tephrosia pseudocapitata H.M.L.Forbes
National Status
Status and Criteria
Endangered A2c; B1ab(iii)+2ab(iii)
Assessment Date
2016/09/12
Assessor(s)
L. von Staden
Justification
A range-restricted taxon (EOO 185 km²), known from two, possibly five remaining locations. A population reduction of at least 50% over the past three generations is inferred from habitat loss across its range, and it continues to decline due to ongoing habitat loss and degradation.
Distribution
Endemism
South African endemic
Provincial distribution
KwaZulu-Natal
Range
KwaZulu-Natal Midlands near Greytown.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Midlands Mistbelt Grassland, KwaZulu-Natal Highland Thornveld
Description
Open grassland.
Threats
Nearly 70% of this taxon's habitat is already irreversibly modified, predominantly due to the establishment of exotic timber plantations. There is still sporadic ongoing expansion of timber plantations, but the main threats to remaining subpopulations of this taxon are habitat loss to urban expansion and spreading rural settlements, overgrazing of small remaining grassland fragments, and spreading of alien invasive plants.
Population

A population reduction of at least 50% is inferred from nearly 70% habitat loss over three generations - this taxon is a long-lived resprouter with an estimated generation length of 30-50 years. It has a very limited distribution range, and few subpopulations are known to remain, although more field surveys are needed in areas where it is known from historical records. It continues to decline due to ongoing habitat loss and degradation.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Tephrosia natalensis H.M.L.Forbes subsp. pseudocapitata (H.M.L.Forbes) SchrireThreatened Raimondo et al. (2009)
Bibliography

Forbes, H.M.L. 1948. A revision of the South African species of the genus Tephrosia Pers. Bothalia 4:951-1001.


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.


Schrire, B.D. 1987. A synopsis of Tephrosia subgenus Barbistyla (Fabaceae) in southern Africa. Bothalia 17(1):7-15.


Citation
von Staden, L. 2016. Tephrosia natalensis H.M.L.Forbes subsp. pseudocapitata (H.M.L.Forbes) Schrire. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/12/14

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Distribution map

© C. Wahlberg

© C. Wahlberg

© C. Wahlberg

© C. Wahlberg


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