Cycas taiwaniana 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Cycadopsida Cycadales Cycadaceae

Scientific Name: Cycas taiwaniana Carruth.

Assessment Information [top]

Red List Category & Criteria: Endangered A2acd ver 3.1
Year Published: 2010
Date Assessed: 2009-10-31
Assessor(s): Hill, K.D.
Reviewer(s): Donaldson, J.S. & Bösenberg J.D.
Estimated to have declined substantially (50-80%) over the past three generations (120 years) due to local trade in ornamental plants and habitat degradation. Whitelock (2002) considered this species as being possibly Extinct in the Wild.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is widespread but sporadic, in the northwestern region of Guangdong and eastern region of Guangxi provinces of China. Subpopulations are also found in the southwestern region of the Hunan and southeastern region of the Yunnan provinces. Despite its name, this species is not known to occur in Taiwan. Has been recorded from 400 up to 1,100 m asl.
Countries occurrence:
China (Guangdong, Guangxi, Hunan, Yunnan)
Additional data:
Lower elevation limit (metres):400
Upper elevation limit (metres):1100
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The population size is estimated to number between 1,00 and 5,000 mature individuals.
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:1000-5000
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Grows on steep slopes on shallow skeletal soils. Plants are found in sunny, grassy places or sparse, mixed forests, often disturbed places. The climate is warm to hot and humid all year.
Generation Length (years):40

Threats [top]

Major Threat(s): This species has been severely depleted by collection from the wild. Habitat destruction over the centuries has also had a major effect on the populations.

Conservation Actions [top]

Conservation Actions: This species is listed on Appendix II of the CITES Appendices.

Citation: Hill, K.D. 2010. Cycas taiwaniana. The IUCN Red List of Threatened Species 2010: e.T42049A10638039. . Downloaded on 24 March 2018.
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