Map_thumbnail_large_font

Polystachya bicalcarata

Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_onStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

Taxonomy [top]

Kingdom Phylum Class Order Family
PLANTAE TRACHEOPHYTA LILIOPSIDA ORCHIDALES ORCHIDACEAE

Scientific Name: Polystachya bicalcarata
Species Authority: Kraenzl.

Assessment Information [top]

Red List Category & Criteria: Vulnerable A2c+3c; B2ab(iii) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Assessor(s): Pollard, B.J. & Darbyshire, I.
Reviewer(s): Zapfack, L. & Cribb, P.J. (Orchid Red List Authority)
Justification:
This species was previously assessed as EN A1c+2c (Cable and Cheek 1998, Cheek et al. 2000, Hilton-Taylor 2000). The assessment is updated here to take into account the new submontane locations on Mt Kupe, where this taxon’s forest habitat remains largely intact, thus reducing the estimated percentage of habitat loss from > 50% to > 30%. This taxon is also assessed under criterion B, being known from nine locations, one of which remains doubtful, with an area of occupancy of less than 500 km².
History:
2000 Endangered

Geographic Range [top]

Range Description: Recorded from Equatorial Guinea, Bioko (1 doubtful collection); Cameroon, S.W. Province: Banyong Mbo Wildlife Sanctuary (1 collection), Buea (3 collections), Mt Cameroon (unlocated, 1 collection), Mt Etinde (1 collection), Mt Kupe (2 collections at 2 locations); W. Province: Bamboutos Mts (1 collection); N.W. Province: Mt Oku (1 collection).
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: An epiphyte of submontane and montane forest; 950–2,000 m alt.
Systems: Terrestrial

Threats [top]

Major Threat(s): Threatened by forest clearance for agriculture and firewood, particularly in the Bamboutos Mts and above Buea on Mt Cameroon.

Conservation Actions [top]

Conservation Actions: Confirmation of this species’ presence on Bioko is required. Surveys of this taxon at each of the collection localities should be made in order to assess its abundance. Continued protection of the submontane forest on Mt Kupe should ensure this species’ future survival.

Citation: Pollard, B.J. & Darbyshire, I. 2004. Polystachya bicalcarata. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 31 July 2014.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please fill in the feedback form so that we can correct or extend the information provided