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Araucaria heterophylla (synonym A. excelsa) is a species of conifer.As its vernacular name Norfolk Island pine (or Norfolk pine) implies, the tree is endemic to Norfolk Island, an external territory of Australia located in the Pacific Ocean between New Zealand and New Caledonia.
A pine tree with pine wilt. Wilt diseases in woody plants tend to fall into two major categories, those that start with the branches and those that start with the roots. Those that start with the branches most often start with pathogens that feed on the leaves or bark, those that start with the roots start with wounding or direct entry by the ...
Norfolk Island Pine Plant Basic Info: Common Name: Norfolk Island pine, Norfolk pine, Australian Pine. Botanical Name: Araucaria heterophylla. Plant Family: Araucariaceae. Type of Plant: Tree ...
The nematodes drop off the beetle, and infect healthy pine trees when the adult beetles eat the young pine branches. [16] The pine wilt nematode is spread by a number of bark beetles and wood borers, typically associated with the genus Monochamus of pine sawyers. [17] Pine sawyers lay their eggs in the bark of dead timber.
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Araucaria columnaris is a distinctive narrowly conical tree growing up to 60 m (200 ft) tall in its native habit. The trees have a slender, spire-like crown. [3] The shape of young trees strongly resembles A. heterophylla. The bark of the Cook pine peels off in thin paper-like sheets or strips and is rough, grey, and resinous. [3]
Chinese botanists say they may have an explanation for a mass die-off of plantation pine trees across the country that has baffled scientists for 50 years - it could be all in the genes.The Pinus ...
Pine-pine gall rust, also known as western gall rust, is a fungal disease of pine trees. It is caused by Endocronartium harknessii (asexual name is Peridermium harknessii ), an autoecious , endocyclic , rust fungus that grows in the vascular cambium of the host. [ 1 ]