Cycas bifida

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
PLANTAE	TRACHEOPHYTA	CYCADOPSIDA	CYCADALES	CYCADACEAE

Scientific Name:	Cycas bifida
Species Authority:	(Dyer) K.D.Hill
Synonym/s:	Cycas longipetiolula D.Yue Wang Cycas multifrondis D.Yue Wang Cycas rumphii Miq Dyer Cycas sp. nov. 'bifida'
Taxonomic Notes:	This remarkable species was first recognized as a distinct taxon in western literature by English botanist Sir William Thiselton-Dyer in 1902, who described it as Cycas rumphii var. bifida. This variety was elevated to the rank of species by K.D. Hill in 2002.

Assessment Information [top]

Red List Category & Criteria:

Vulnerable A2c ver 3.1

Year Published:

2010

Assessor/s:

Nguyen, H.T.

Reviewer/s:

Donaldson, J.S. & Bösenberg, J.D.

Justification:
Populations have been substantially reduced (more than 30% in last three generations) as a result of the combined effects of plant collection and land clearance for agriculture and forestry and it is therefore listed as Vulnerable. It is still relatively abundant so does not qualify for threatened status under criterion C.

History:

2003	–	Vulnerable (IUCN 2003)
1997	–	Endangered (Walter and Gillett 1998)

Geographic Range [top]

Range Description:	This species is found in southern Guangxi and eastern Yunnan provinces in China and Cao Bang, Lang Son and Tuyen Quang provinces in northern Viet Nam. Occurs at 100 to 300 m asl.
Countries:	Native: China (Guangxi, Yunnan); Viet Nam
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	This species is locally abundant but many subpopulations are now seriously depleted.
Population Trend:	Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	This species occurs in low, scrubby but fairly dense mixed evergreen and deciduous woodland or bamboo woodland, often on red terra rosa soils on and around steep karst limestone outcrops, but also on sandy or loamy soils over shales, granites and meta-sandstones.
Systems:	Terrestrial

Threats [top]

Major Threat(s):	This species has been affected by habitat destruction due to forestry and agricultural activities. This species has also been severely reduced in numbers as a result of over-collecting for ornamental purposes.

Major Threat(s):

This species has been affected by habitat destruction due to forestry and agricultural activities. This species has also been severely reduced in numbers as a result of over-collecting for ornamental purposes.

Conservation Actions [top]

Conservation Actions:	This species is listed on Appendix II of the CITES Appendices. Populations are protected in the Longgang Nature Reserve in Longzhou, Guangxi province, China.

Conservation Actions:

This species is listed on Appendix II of the CITES Appendices. Populations are protected in the Longgang Nature Reserve in Longzhou, Guangxi province, China.

Citation:	Nguyen, H.T. 2010. Cycas bifida. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 25 May 2012.
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