Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Nepenthales Nepenthaceae

Scientific Name: Nepenthes adnata
Species Authority: Tamin & M.Hotta ex J.Schlauer
Taxonomic Source(s): Tamin, R. and Hotta, M. 1986. Nepenthes di Sumatera: The genus Nepenthes of the Sumatra Island. In: M. Hotta (ed.), Diversity and Dynamics of Plant Life in Sumatra 1, pp. 75-109. Kyoto University, Japan.

Assessment Information [top]

Red List Category & Criteria: Endangered D ver 3.1
Year Published: 2014
Date Assessed: 2013-12-14
Assessor(s): Hernawati, N. & Clarke, C.M.
Reviewer(s): Cantley, R.
Contributor(s): Lee, C. & Sarunday, C.
Nepenthes adnata has a restricted geographical range in the Tjampo Mountains of West Sumatra, Indonesia. Although the known population is relatively small (200 mature individuals), the majority of plants appear to be relatively free of direct threats at present. However, due to its small population size, land clearing, fire and over-collection of wild plants could all become serious threatening processes in future. The species is listed as Endangered based on its small population size.
Previously published Red List assessments:
2000 Data Deficient (DD)

Geographic Range [top]

Range Description: Nepenthes adnata is edemic to the sandstone hills of the Tjampo mountains in West Sumatra. It occurs between 650 and 1,100 m asl.
Countries occurrence:
Indonesia (Sumatera)
Estimated area of occupancy (AOO) - km2: 12
Continuing decline in area of occupancy (AOO): No
Extreme fluctuations in area of occupancy (AOO): No
Estimated extent of occurrence (EOO) - km2: 12
Continuing decline in extent of occurrence (EOO): No
Extreme fluctuations in extent of occurrence (EOO): No
Number of Locations: 3
Continuing decline in number of locations: No
Extreme fluctuations in the number of locations: No
Lower elevation limit (metres): 650
Upper elevation limit (metres): 1100
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: At present, the known population of Nepenthes adnata is very small - only 200 mature individuals are known. It is not yet known whether current estimates are accurate, or whether the inconspicuous nature of the plant, coupled with the very rugged terrain that it grows in, obscure the actual number of mature individuals.
Current Population Trend: Stable
Additional data:
Number of mature individuals: 200 Continuing decline of mature individuals: No
Extreme fluctuations: No Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: Nepenthes adnata grows terrestrially on mossy sandstone cliffs amongst dense vegetation. This region is characterized by very rugged terrain and few mountains and valleys have been explored to date. As this species is inconspicuous, and it habitats very difficult to reach, comparatively little is known about its ecology at present.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: No

Use and Trade [top]

Use and Trade: Nepenthes adnata has no known uses and is of limited appeal to horticulturists. Its diminutive stature makes it popular among enthusiasts of Nepenthes, but trade in this species appears to be insignificant.

Threats [top]

Major Threat(s): Although the present threats to Nepenthes adanta (small-holder farming, increased fire frequency, and collection) do not appear to be significant, the survival of this species could be at risk if there is any increase in the probability or intensity of these threats.

Conservation Actions [top]

Conservation Actions: Nepenthes adnata is not subject to any species-specific conservation actions. Part of the range is in a forest reserve and it is listed on CITES Appendix II.

Citation: Hernawati, N. & Clarke, C.M. 2014. Nepenthes adnata. The IUCN Red List of Threatened Species 2014: e.T39638A19630641. . Downloaded on 10 October 2015.
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