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Begonia pelargoniiflora

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Taxonomy [top]

Kingdom Phylum Class Order Family
PLANTAE TRACHEOPHYTA MAGNOLIOPSIDA VIOLALES BEGONIACEAE

Scientific Name: Begonia pelargoniiflora
Species Authority: J.J.de Wilde & J.C.Arends

Assessment Information [top]

Red List Category & Criteria: Critically Endangered 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:
First published in 1992, an updated account was included in de Wilde’s revision of Begonia sect. Tetraphila (2002: 183). B. pelargoniiflora shows a similar disjunct distribution to that of B. furfuracea, that is, Bioko, northwards to the Bakossi Mts but omitting the very well collected Mt Cameroon. However, whereas de Wilde records eight collections for B. furfuracea, there are only four known for B. pelargoniiflora, two from Bioko and one each from the Bakossi Mts and the adjoining Mt Nlonako. The fact that it has not been recollected in the last 10 years despite intensive botanical inventory work e.g., in Bakossi, illustrates that this species really is very rare. By comparison, 30 specimens of the related and similar B. longipetiolata were made between 1995–2003 in Kupe-Bakossi. On the basis of an area of occupancy of 1 km² per site, the total area of occupancy is calculated as just 4 km² for this taxon. Its range is considered severely fragmented on the basis of its absence from Mt Cameroon. There is contiunuing decline due to forest clearance.

Geographic Range [top]

Range Description: Equatorial Guinea: Bioko (2 coll.); Cameroon: Bakossi Mts and Mt Nlonako (1 coll. each).
Countries:
Native:
Cameroon; Equatorial Guinea (Bioko)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: Found in forest, 1,000–1,500 m alt.
Systems: Terrestrial

Threats [top]

Major Threat(s): Threatened by forest clearance for wood and agriculture, e.g., ongoing at Mt Nlonako, the type locality.

Conservation Actions [top]

Conservation Actions: An effort should be made to rediscover this taxon and to assess the size of the subpopulation and its demography in detail. In view of its rarity this species might be suitable for propagation and reintroduction in suitable localities.
Citation: Cheek, M. 2004. Begonia pelargoniiflora. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 20 April 2014.
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