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Acer × freemanii, Freeman maple or Freeman's maple, is a naturally occurring hybrid maple that is the result of a cross between Acer rubrum (red maple) and Acer saccharinum (silver maple). Wild specimens are found in eastern North America where the parent species overlap.
'Autumn Blaze' – Rounded oval form with leaves that resemble the silver maple. The fall color is orange red and persists longer than usual. 'Autumn Flame' – A fast grower with exceptional bright red fall color developing early. The leaves are also smaller than the species. 'Autumn Radiance' – Dense oval crown with an orange-red fall color.
The maple is a common symbol of strength and endurance and has been chosen as the national tree of Canada. Maple leaves are traditionally an important part of Canadian Forces military regalia, for example, the military rank insignia for generals use maple leaf symbols. There are 10 species naturally growing in the country, with at least one in ...
Rhytisma acerinum is a plant pathogen that commonly affects sycamores and maples in late summer and autumn, causing tar spot. Tar spot does not usually have an adverse effect on the trees' long-term health. [1] R. acerinum is an Ascomycete fungus that locally infects the leaves of trees and is a biotrophic parasite. [2]
The fungal pathogen Cristulariella depraedans is found in Europe and North America and mostly affects trees in the genus Acer.Trees affected in Germany and Britain are primarily the sycamore (A. pseudoplatanus) and the Norway maple (A. platanoides), while in North America the most affected are A. platanoides, the red maple (), the sugar maple (A. saccharum), the silver maple (A. saccharinum ...
Maple decline is a term describing loss of vigor and dieback in forests or urban plantings of maple trees. It is not a disease or a syndrome, nor is it contagious or endemic. Instead, it is a generalized set of symptoms that may be applied to any species of tree suffering a wide range of different stressors.
Millions of the famous Joshua trees, that can live fore more than 150 years, are at risk Fire ‘whirls’ spawned by out of control blaze threaten California’s iconic Joshua trees Skip to main ...
Eutypella canker is a plant disease caused by the fungal pathogen Eutypella parasitica. This disease is capable of infecting many species of maple trees and produces a large, distinguishable canker on the main trunk of the tree. Infection and spread of the disease is accomplished with the release of ascospores from perithecia.