Cycas pectinata


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Cycas pectinata
Species Authority: Buch.-Ham.
Cycas jenkinsiana Griff.
Taxonomic Notes: Cycas pectinata was named and described in 1826 by Scottish surgeon and botanist Francis Buchanan-Hamilton.

Assessment Information [top]

Red List Category & Criteria: Vulnerable A2c ver 3.1
Year Published: 2010
Date Assessed: 2009-10-31
Assessor(s): Nguyen, H.T.
Reviewer(s): Donaldson, J.S. & Bösenberg, J.D.
Listed as Vulnerable due to an estimated decline in habitat of >30% over the past 90 years (three generations = 120 years).
2003 Vulnerable

Geographic Range [top]

Range Description: C. pectinata is abundant in the hill forests of northeastern India, and has also been collected from Nepal, Bhutan and Bangladesh. It extends into northern Burma (Myanmar) and Yunnan Province in southern China, and south and east into northern Thailand, Lao PDR, Viet Nam and northeastern Cambodia. Recorded from 600 to 1,300 m asl.
Bangladesh; Bhutan; Cambodia; China (Yunnan); India (Uttar Pradesh); Lao People's Democratic Republic; Myanmar (Myanmar (mainland)); Nepal; Thailand; Viet Nam
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This is a common and widespread species.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: This species occurs in medium to tall closed forest on deep, often clay-rich and more fertile soils, usually as part of the general shrub understorey in moderate to deep shade. C. pectinata is a plant of medium to higher elevations and moist conditions. It is recorded from a variety of substrates, but most frequently occurs on clay soils over limestone. Climate is tropical with wet, humid summers and milder, drier winters. Although often found on limestone substrates, it is by no means restricted to these, and it also occurs on granites and meta-sediments.
Systems: Terrestrial

Use and Trade [top]

Use and Trade: The Hill tribes in Assam, India eat the seeds and emergent leaves are used as a vegetable. The fleshy stem is pounded and used as a hair wash.

Threats [top]

Major Threat(s): Hill tribes in Assam, India eat the seeds and emergent leaves are used as a vegetable. The fleshy stem is pounded and used as a hair wash. Although its habitat is continually being reduced, large populations remain, and it is not under any immediate threat of extinction.

Conservation Actions [top]

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

Bibliography [top]

Hill K.D., Nguyen, H.T. and Loc, P.K. 2004. The Genus Cycas (Cycadaceae) in Vietnam. The Botanical review 70(2): 134-193.

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: (Accessed: 2 September 2010).

Jones, D.L. 2002. Cycads of the World. Smithsonian Institution Press, Washington, DC.

Lindström, A.J. and Hill, K.D. 2007. The genus Cycas (Cycadaceae) in India. Telopea 11(4): 463–488.

Wang, F., Liang H., Tanqing, C. and Dingyue, W. (eds ). 1996. Cycads in China. Guangdong Science and Technology Press, Guangdong, China.

Whitelock, L.M. 2002. The Cycads. Timber Press, Portland, Oregon.

Citation: Nguyen, H.T. 2010. Cycas pectinata. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 03 September 2015.
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