Cupressaceae

The Indochina Threatened Conifer Region focuses on mainland Southeast Asia and includes Myanmar, Thailand (as far south as the Isthmus of Kra), Lao PDR, Cambodia and Việt Nam. Central physical features of this area include the Annamite Mountains that form the border between Lao PDR and Việt Nam, the Hoang Lien Mountains in northwestern Việt Nam and the extensive karst limestone areas of northern Việt Nam and the adjoining areas of China. Climates are variable depending on altitude and distance from the coast with some areas experiencing subtropical climates with distinct wet and dry seasons while others are more seasonal. Vegetation types range from subtropical evergreen forests to subalpine bogs and meadows. The conifer flora is very diverse with at least 15 genera and 35 species present. Almost one third are endemic and at least 20 are globally threatened. Notable endemic species include Pinus krempfii and Xanthocyparis vietnamensis. Several taxa are represented by small disjunct subpopulations with the main populations found in other Regions, sometimes at considerable distances. Principal threats in this region include conversion of forests for agriculture, forestry and urbanisation, overexploitation for timber, illegal logging and wildfires.

Taxa in the category - Cupressaceae:

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Athrotaxis cupressoides D.Don

Endemic to Tasmania where the main threats are fire, grazing of regeneration and dieback caused by Phytophthora Read full species entry >

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Athrotaxis selaginoides D.Don

One of two Athrotaxis species endemic to Tasmania where historically it has suffered from fire and logging. Today, even with protection, there is a continuing decline due to fire. Read full species entry >

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Callitris oblonga A.Rich. & Rich.

Endemic to Australia where it occurs on the mainland and Tasmania. Threats include  forest clearance, fire, grazing, invasive species and soil erosion. Read full species entry >

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Callitris sulcata (Parl.) Schltr.

One of two Callitris species endemic to New Caledonia; it is restricted to a few locations in the south of the main island of Grande Terre where its threatened by fire and logging Read full species entry >

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Calocedrus formosana (Florin) Florin

Endemic to Taiwan where the population has become severely fragmented through logging and forest clearance for agriculture. Read full species entry >

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Calocedrus macrolepis Kurz

A widespread species that has been exploited for timber and resin. Difficulties in estimating the extent of its decline and a lack of information about its staus is some parts of its range have resulted in an assessment of Near Threatened. Read full species entry >

Foliage
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Calocedrus rupestris Aver.,T.H.Nguyên & P.K.Lôc

Calocedrus rupestris was first described in 2008 from Việt Nam: prior to this Calocedrus trees occurring on limestone karst  were wrongly identified as Calocedrus macrolepis.  In 2011 C. rupestris was discovered in Guangxi. Threats include selective logging for timber, deforestation and forest degradation. Read full species entry >

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Chamaecyparis formosensis Matsum.

Endemic to Taiwan where logging for its valuable wood has been the main cause of decline in its population Read full species entry >

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