Cycas revoluta
Taxonomy [top]
| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| PLANTAE | TRACHEOPHYTA | CYCADOPSIDA | CYCADALES | CYCADACEAE |
| Scientific Name: | Cycas revoluta | |||
| Species Authority: | Thunb. | |||
Common Name/s:
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| Synonym/s: |
Cycas miquelii Warb.
Cycas revoluta Thunb. Messeri
Cycas revoluta Thunb. Miq.
Cycas revoluta Thunb. Siebold & Zucc.
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Assessment Information [top]
| Red List Category & Criteria: | Least Concern ver 3.1 | |||
| Year Published: | 2010 | |||
| Assessor/s: | Hill, K.D. | |||
| Reviewer/s: | Donaldson, J.S. & Bösenberg, J.D. | |||
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Justification: Despite declines across its range, this species is still relatively common in Japan and is therefore listed as Least Concern |
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| History: |
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Geographic Range [top]
| Range Description: | This species is widely distributed through the Ryukyu Islands of southern Japan and also on the southern parts of Kyushu Island. There are reports of natural occurrences in the coastal Fujian Province of China. These have not been substantiated, although circumstantial support for these claims are strong. Recorded from sea level up to 300 m. |
| Countries: |
Native:
Japan (Kyushu, Nansei-shoto)
Presence uncertain:
China (Fujian)
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| Range Map: | Click here to open the map viewer and explore range. |
Population [top]
| Population: | The population is large and estimations of several hundred thousand plants have been made. |
| Population Trend: |
Stable
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Habitat and Ecology [top]
| Habitat and Ecology: | Today plants occur primarily on steep to precipitous stony sites, but previously they occurred on flatter land which has since been cleared. Usually grow in exposed locations on steep limestone cliffs and rocks overhanging the shoreline, sometimes in low dense forest in heavy shade. |
| Systems: | Terrestrial |
Threats [top]
| Major Threat(s): | There has been massive seed collecting from natural habitats and leaves are exported in large numbers for decorative purposes. Habitat has also been cleared. |
Conservation Actions [top]
| Conservation Actions: | This species is listed on Appendix II of the CITES Appendices. |
Bibliography [top]
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Chen, J. and Stevenson, D.W. 2006. Flora of China. Available at: www.efloras.org. Hill, K.D. 2008. The genus Cycas (Cycadaceae) in China. Telopea 12(1): 71-118. Hill, K.D. and Stevenson, D.W. 1998 - 2006. The Cycad Pages. Available at: http://plantnet.rbgsyd.nsw.gov.au/PlantNet/cycad/index.html. IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: http://www.iucnredlist.org. (Accessed: 2 September 2010). Jones, D.L. 2002. Cycads of the world. Smithsonian Institution Press, Washington, DC. Osborne, R. and Tomiyama, H. 1995. Focus on Encephalartos revoluta. Encephalartos 41: 5-15. Whitelock, L.M. 2002. The Cycads. Timber Press, Portland, Oregon. |
| Citation: | Hill, K.D. 2010. Cycas revoluta. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 25 May 2012. |
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