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Cedrus atlantica foliage and mature female cone Male cones beginning to shed pollen. Fully grown, Atlas cedar is a large coniferous evergreen tree, 30 to 35 m (98 to 115 ft) (rarely 40 m) tall, with a trunk diameter of 1.5 to 2 m (4.9 to 6.6 ft).
The plant pathogenic fungus Leucostoma kunzei (formerly Valsa kunzei) is the causal agent of Leucostoma canker (also known as Cytospora canker or spruce canker), a disease of spruce trees found in the Northern Hemisphere, predominantly on Norway spruce (Picea abies) and Colorado blue spruce (Picea pungens).
Diphasiastrum tristachyum, commonly known as blue clubmoss, blue ground-cedar, ground pine, deep-rooted running-pine or ground cedar, is a North American and Eurasian species of clubmoss. [ 2 ] [ 3 ] [ 4 ] In North America, it has been found from Newfoundland west to Manitoba, and south as far as Georgia and Alabama. [ 2 ]
Cedrus, with the common English name cedar, is a genus of coniferous trees in the plant family Pinaceae (subfamily Abietoideae). They are native to the mountains of the western Himalayas and the Mediterranean region, occurring at altitudes of 1,500–3,200 m (4,900–10,500 ft) in the Himalayas and 1,000–2,200 m (3,300–7,200 ft) in the Mediterranean.
Laminated root rot also known as yellow ring rot is caused by the fungal pathogen Phellinus weirii.Laminated root rot is one of the most damaging root disease amongst conifers in northwestern America and true firs, Douglas fir, Mountain hemlock, and Western hemlock are highly susceptible to infection with P. weirii.
Weeping Atlas Cedar Golden weeping willow: Salix Sepulcralis Group 'Chrysocoma' Weeping trees are trees characterized by soft, limp twigs. [1] This characterization may lead to a bent crown and pendulous branches that can cascade to the ground. While weepyness occurs in nature, most weeping trees are cultivars. [1]
Large burl on a spruce tree at Denali State Park, Alaska. A burl results from a tree undergoing some form of stress.It may be caused by an injury, virus or fungus. [3] Most burls grow beneath the ground, attached to the roots as a type of malignancy that is generally not discovered until the tree dies or falls over.
Blue stain fungi (also known as sap stain fungi) is a vague term including various fungi that cause dark staining in sapwood. [1] The staining is most often blue, but could also be grey or black. Because the grouping is based solely on symptomatics, it is not a monophyletic grouping.