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Bidens mannii

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Taxonomy [top]

Kingdom Phylum Class Order Family
PLANTAE TRACHEOPHYTA MAGNOLIOPSIDA ASTERALES COMPOSITAE

Scientific Name: Bidens mannii
Species Authority: T.G.J. Rayner
Taxonomic Notes: Synonym = Coreopsis monticola (Hook.f.) Oliv. & Hiern.

Assessment Information [top]

Red List Category & Criteria: Vulnerable B2ab(iii) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Assessor(s): Cheek, M.
Reviewer(s): Hilton-Taylor, C. & Pollock, C.M. (Red List Programme Office)
Justification:
It is abundant, common and secure on old lava flows on Mt Cameroon, but elsewhere it appears rare and precarious (see threats below). Seven sites are known.

Geographic Range [top]

Range Description: Cameroon: Mt Cameroon (10 coll.), Mwanenguba, Kupe Rock, Bamboutos, Lake Aweng, Santa Mt (1 coll. each), Mt Oku (2 coll.).
Countries:
Native:
Cameroon
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: Occurs in grassland, near forest, often at well-drained sites; (1,000–)2,000 m alt.
Systems: Terrestrial

Threats [top]

Major Threat(s): Threats are poorly known, but grazing and the associated annual firing of grassland are considered likely to be detrimental to this species. In addition, cultivation of habitat for crops e.g., at Lake Aweng, Santa and Bamboutos, is a threat.

Conservation Actions [top]

Conservation Actions: The effect of forest loss on this, and other rare, sun-loving Compositae, many of which share the same range of habitats, is poorly understood. Research is needed to redress this. Limited 'habitat destruction' at intervals of years, in the form of fires or limited long-fallow small-holder agriculture or small scale tree felling may be helpful to the survival of such taxa by keeping their habitat open and allowing establishment of probably short-lived perennials such as these.

Citation: Cheek, M. 2004. Bidens mannii. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 16 September 2014.
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