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Pinus mugo, known as dwarf mountain pine, [4] mountain pine, scrub mountain pine, Swiss mountain pine, [5] bog pine, creeping pine, [6] or mugo pine, [7] is a species of conifer, native to high elevation habitats from southwestern to Central Europe and Southeast Europe.
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 ]
In general, this classification emphasized cone, cone scale, seed, and leaf fascicle and sheath morphology, and species in each subsection were usually recognizable by their general appearance. Pines with one fibrovascular bundle per leaf, (the former subgenera Strobus and Ducampopinus ) were known as haploxylon pines , while pines with two ...
Since 1970, millions of Western white pine seedlings have been planted to make up for the losses. [5] The white pine blister rust (Cronartium ribicola) is a fungus that was accidentally introduced from Europe in 1909. The United States Forest Service estimates that 90% of the Western white pines have been killed by the blister rust west of the ...
Cronartium quercuum, also known as pine-oak gall rust is a fungal disease of pine (Pinus spp.) and oak (Quercus spp.) trees. Similar to pine-pine gall rust , this disease is found on pine trees but its second host is an oak tree rather than another pine.
Pine seedlings being bred to resist white pine blister rust by the US Forest Service Cronartium ribicola is a heteroecious, macrocyclic pathogen on Pinus spp and Ribes spp. [ 7 ] Because young pines are smaller and less developed than mature trees, they are most susceptible to the pathogen.
Dwarf mountain pine may refer to: Pinus mugo , also called creeping pine, a conifer native to high elevation habitats in Europe. Pherosphaera fitzgeraldii , also called Blue Mountains pine, is a critically endangered conifer species found only in New South Wales, Australia.
Chionaspis pinifoliae, the pine needle scale insect, is a common species of scale insect found on pine, spruce and other conifers across Canada and throughout the United States. [1] The species is particularly persistent on planted spruce in the Prairie Provinces in both rural and urban settings. In heavy populations, the needles may appear to ...