Amentotaxus hatuyenensis 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Pinopsida Pinales Taxaceae

Scientific Name: Amentotaxus hatuyenensis
Species Authority: Hiep
Taxonomic Source(s): Farjon, A. 2010. A Handbook of the World's Conifers. Koninklijke Brill, Leiden.
Taxonomic Notes: This species is close to A. yunnanensis and A. poilanei and differs mainly in the colour of the stomatal bands, which are brownish not whitish. Although it was described in 1996, it is still poorly known.

Assessment Information [top]

Red List Category & Criteria: Endangered A2c; C2a(i) ver 3.1
Year Published: 2013
Date Assessed: 2010-08-10
Assessor(s): Nguyen, T.H., Phan, K.L., Nguyen, Q.H. & Thomas, P.
Reviewer(s): Gardner, M. & Farjon, A.
The assessment of Endangered is based on an estimated 50% reduction in the habitat quality due to the impacts of deforestation within its known distribution combined with a very small population of less than 250 mature individuals which is undergoing continuing decline.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Only known from two almost adjoining localities in Ha Giang province in northern Viet Nam.
Countries occurrence:
Viet Nam
Additional data:
Number of Locations:2
Lower elevation limit (metres):1000
Upper elevation limit (metres):1500
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The total population is estimated to be less than 250 mature individuals.
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:249Continuing decline of mature individuals:Yes
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Occurs in primary closed evergreen tropical seasonal mixed on slopes or on top ridges of submontane forests on karst limestone formations between 1,000 and 1,500 m amsl. Other conifers that may be associated with it include Pinus fenzeliana s.l., Tsuga chinensis, Cephalotaxus mannii, Podocarpus neriifolius, Nageia fleuryi and Podocarpus pilgeri.  The woodland is extremely rich in epiphytes, e.g., orchids, and includes many endemics.
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: No specific uses have been recorded.

Threats [top]

Major Threat(s): Forest fragmentation, decline of habitat due to forest fire, poor natural regeneration and longer term effects of the conversion of surrounding habitats for agricultural use are the main threats.

Conservation Actions [top]

Conservation Actions: Currently only recorded from one protected area (Bat Dai Son Nature Reserve).

Citation: Nguyen, T.H., Phan, K.L., Nguyen, Q.H. & Thomas, P. 2013. Amentotaxus hatuyenensis. The IUCN Red List of Threatened Species 2013: e.T42602A2988205. . Downloaded on 21 July 2017.
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