Geissorhiza melanthera

Taxonomy
Scientific Name
Geissorhiza melanthera Goldblatt & J.C.Manning
Higher Classification
Monocotyledons
Family
IRIDACEAE
National Status
Status and Criteria
Endangered B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)
Assessment Date
2014/04/21
Assessor(s)
L. von Staden & N.A. Helme
Justification
A highly localized species (EOO 23 km²), currently known from two locations and declining due to ongoing habitat loss to agriculture.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Western Piketberg near Aurora.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Leipoldtville Sand Fynbos
Description
Deep sand on gentle south-facing slopes.
Threats
This species' habitat is rapidly disappearing due to expanding rooibos tea and potato cultivation. It is currently known from only two locations, two small fragments ±6 km apart. At one of these, a ploughing application for 300 hectares is currently under review (N.A. Helme pers. comm. 2014).
Population
Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Geissorhiza melanthera Goldblatt & J.C.ManningEN B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)2014.1
Bibliography

Goldblatt, P. and Manning, J.C. 2013. Geissorhiza melanthera sp. nov. (Iridaceae: Crocoideae) from the southern African winter rainfall region with comments on its pollination by the bee-fly Megapalpus capensis (Bombyliidae). South African Journal of Botany 87(1):22-24.


Citation
von Staden, L. & Helme, N.A. 2014. Geissorhiza melanthera Goldblatt & J.C.Manning. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2018/11/16

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Distribution map

© N.A. Helme


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