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Aspen trunk rot is a fungal disease that causes stem decay heart rot of living aspen trees. The pathogen that causes this disease is the fungus Phellinus tremulae . Most of the symptoms of this disease are internal, with the only external signs of a diseased aspen being fruiting bodies called conks.
Populus tremuloides is a deciduous tree native to cooler areas of North America, one of several species referred to by the common name aspen.It is commonly called quaking aspen, [2] [3] [4] trembling aspen, [2] [3] American aspen, [3] mountain or golden aspen, [5] trembling poplar, [5] white poplar, [5] and popple, [5] as well as others. [5]
A male clonal organism, Pando has an estimated 47,000 stems (ramets) that appear to be individual trees, but are connected by a root system that spans 42.8 ha (106 acres). Pando is the largest tree by weight and landmass and the largest known aspen clone.
An initiative to save one of Scotland's most endangered species of tree has been launched in the Cairngorms National Park. Aspen provides a vital habitat for rare wildlife, plants and fungi and is ...
Hypoxylon mammatum symptoms on aspen. Hypoxylon canker of shade trees has three primary species, through which the pathogen can infect a variety of hardwood shade trees. Hypoxylon atropunctatum is most commonly found on oak, Hypoxylon mammatum is a significant pathogen on aspen trees, and Hypoxylon tinctor infects sycamore trees.
They are all medium-sized deciduous trees reaching 15–30 m (50–100 ft) tall. In North America, the aspen is referred to as quaking aspen or trembling aspen because the leaves "quake" or tremble in the wind. This is due to their flattened petioles which reduce aerodynamic drag on the trunk and branches. Aspen trees near Crested Butte, Colorado