Cycas beddomei 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Cycadopsida Cycadales Cycadaceae

Scientific Name: Cycas beddomei Dyer

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) ver 3.1
Year Published: 2010
Date Assessed: 2009-10-31
Assessor(s): Rao, B.R.P.
Reviewer(s): Donaldson J.S. & Bösenberg, J.D.
Cycas beddomei was originally listed as Vulnerable in the Indian Red Data Book (Nayar and Sastry 1987) and later re-evaluated as Endangered by Rao et al. (2003). Jadhav et al. (2001) classified the species as Critically Endangered based on secondary data and this assessment was the basis for the 2003 assessment (Hill 2003). However recent population studies (Suresh and Rao 2009; Rao et al. 2009) have provided detailed information on the distribution and population size of C. beddomei. These data show that the extent of occurrence (388 km²) and area of occupancy (20 km²) are small, but they are greater than originally thought and would mean that C. beddomei qualifies as Endangered (not Critically Endangered) under criterion B. Population size was originally estimated as <1,000 mature individuals, which means that it may also have qualified as Endangered under criterion C. However, the latest data provides an estimate of between 20,000 and 30,000 individuals, so the risk associated with small population size is minimal.

The population is declining, partly due to local use and partly due to the frequency of fires. It was not possible to estimate the extent of decline as the historical data appears to have underestimated the actual extent and size of the population.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is known only from the Tirupati-Kadapa Hills in Andhra Pradesh State, northwest of Madras in eastern Peninsular India. The hills are also known as the Seshachalam hills. Occurs from 300 to 900 m.

The entire area of distribution should probably be considered as a single locality since the blocks where the species occurs are contiguous and a single event such as a large fire, disease or pest outbreak could impact the entire population.
Countries occurrence:
India (Andhra Pradesh)
Additional data:
Estimated area of occupancy (AOO) - km2:20
Number of Locations:1
Lower elevation limit (metres):300
Upper elevation limit (metres):900
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The population was originally regarded as having less than 1,000 mature individuals. However, detailed population studies across the entire range (from 2006-2008) indicate that the population is much larger than originally thought, with an estimated number of 20,000 - 30,000 mature individuals (Rao et al. 2009).
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:20000-30000
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This is characteristically a species of dry, open hill slopes. It grows in an area with annual rainfall of 570-1,230 mm. Plants grow on skeletal soils, mainly in dry deciduous mixed type forest with patches of moist deciduous forest.
Generation Length (years):40

Threats [top]

Major Threat(s): This species is threatened by frequent grassfires that effectively block reproduction. The male cones are used in ayurvedic medicine, although the impact on populations is not known. The stems are also harvested for the extraction of the pith, which is used as treatment in the case of debility. Land clearing may also have a negative effect on populations.

Conservation Actions [top]

Conservation Actions: This species is listed on Appendix I of CITES. C. beddomei occurs in the Sri Venkateswara National Park.

Citation: Rao, B.R.P. 2010. Cycas beddomei. The IUCN Red List of Threatened Species 2010: e.T42036A10634328. . Downloaded on 23 July 2018.
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