Amentotaxus argotaenia var. brevifolia 


Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Pinopsida Pinales Taxaceae

Scientific Name: Amentotaxus argotaenia var. brevifolia
Species Authority: K.M.Lan & F.H.Zhang
Parent Species:
Taxonomic Source(s): Farjon, A. 2010. A Handbook of the World's Conifers. Koninklijke Brill, Leiden.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2013
Date Assessed: 2010-12-14
Assessor(s): Liao, W. & Yang, Y.
Reviewer(s): Thomas, P. & Farjon, A.

This variety has a very small range and presumably a small population although the size is not known. The Chinese Plant Red List indicates that there are less than 50 mature individuals. However, the source for this information is unknown, so it is not used here. The extent of occurrence and area of occupancy are both less than 5 km², there is a single location and there is continuing decline in the extent and quality of the habitat due to general logging of the forest at lower elevations and expansion of agricultural activities. It is therefore listed as Critically Endangered under criteria B1 and B2. Further surveys might show that it also qualifies for Critically Endangered under criteria C2a(i,ii) and D.

Previously published Red List assessments:
1998 Vulnerable (VU)
1998 Vulnerable (V)

Geographic Range [top]

Range Description: Has a restricted range, being confined to Libo Xian in SE Guizhou (China).
Countries occurrence:
China (Guizhou)
Estimated area of occupancy (AOO) - km2: 4
Number of Locations: 1
Lower elevation limit (metres): 980
Upper elevation limit (metres): 1020
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The population appears to be fairly restricted and is presumably quite small.
Current Population Trend: Decreasing
Additional data:

Habitat and Ecology [top]

Habitat and Ecology: This variety occurs on limestone karst mountains on steep rocky slopes and ridges at around 1,000 m altitude.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes
Generation Length (years): 25

Use and Trade [top]

Use and Trade: This variety grows to a small tree; its uses are similar to those of the species but it is not known if it is in cultivation in or outside China. The wood is used for tool making, furniture and wood turning (handicrafts).

Threats [top]

Major Threat(s): This variety is known from a very limited area and has presumably been reduced in population size due to deforestation (general logging and expanding agriculture) on the more accessible slopes.

Conservation Actions [top]

Conservation Actions: Further research is need to establish the size of the population and to protect its habitat. Ex situ conservation may also be necessary.

Citation: Liao, W. & Yang, Y. 2013. Amentotaxus argotaenia var. brevifolia. The IUCN Red List of Threatened Species 2013: e.T32492A2820574. . Downloaded on 02 December 2015.
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