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Scientific Name | Marasmodes crewiana Magee & Ebrahim |
Higher Classification | Dicotyledons |
Family | ASTERACEAE |
National Status |
Status and Criteria | Critically Endangered C2a(ii); D |
Assessment Date | 2016/05/19 |
Assessor(s) | I. Ebrahim, L. von Staden & A.R. Magee |
Justification | A single, small subpopulation consisting of fewer than 50 mature individuals is threatened by ongoing habitat degradation and competition from alien invasive plants. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Kwaggaskloof, south of Worcester. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Breede Shale Renosterveld, Breede Quartzite Fynbos |
Description | Sandy soils in drainage washes on lower slopes and flats, in transitional areas between shale renosterveld and quartzite fynbos. |
Threats |
| The population is currently threatened by a lack of fire (this species requires fire to regenerate), livestock grazing, and spreading alien invasive plants. Habitat loss to erosion is a potential threat, as plants grow on exposed sandy soils along drainage lines. Disturbance and trampling by livestock may cause destabilisation of these fragile habitats, which is likely to lead to erosion during heavy rainfall. |
Population |
Plants occur in two small clumps, about 2.6 km apart, on two adjacent farms. One consists of about 20 plants, the second has 17 plants. They are considered to be a single subpopulation, but two locations, as they occur on two separate properties.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Marasmodes sp. nov. (Ebrahim CR3770 NBG) | CR C2a(ii); D | 2017.1 | |
Bibliography |
Magee, A., Ebrahim, I., Koopman, R. and von Staden, L. 2017. Marasmodes (Asteraceae, Anthemideae), the most threatened plant genus of the Cape Floristic Region, South Africa: Conservation and taxonomy. South African Journal of Botany 111:371-386.
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Citation |
| Ebrahim, I., von Staden, L. & Magee, A.R. 2016. Marasmodes crewiana Magee & Ebrahim. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2023/12/08 |
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