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Norway maple, red maple and sugar maple are the species most commonly affected. The trouble often starts after insect-induced defoliation, which weakens the trees and makes them more susceptible to secondary pathogens. Early signs of decline include small or scorched foliage, and premature fall colors on some of a tree's branches.
The striped maple is a small deciduous tree growing to 5–10 meters (16–33 ft) tall, with a trunk up to 20 cm (8 in) in diameter. [3] The shape of the tree is broadly columnar, with a short, forked trunk that divides into arching branches which create an uneven, flat-topped crown .
Acer negundo, also known as the box elder, boxelder maple, Manitoba maple or ash-leaved maple, is a species of maple native to North America from Canada to Honduras. [3] It is a fast-growing, short-lived tree with opposite, ash-like compound leaves.
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 ...
trident maple Aceraceae (maple family) Acer caesium: Himalayan maple Aceraceae (maple family) Acer campbellii: Campbell's maple Aceraceae (maple family) Acer campestre: field maple Aceraceae (maple family) Acer capillipes: Kyushu maple; red snakebark maple Aceraceae (maple family) Acer cappadocicum: Cappadocian maple; Caucasian maple; coliseum ...
Acer saccharinum, commonly known as silver maple, [3] creek maple, silverleaf maple, [3] soft maple, large maple, [3] water maple, [3] swamp maple, [3] or white maple, [3] is a species of maple native to the eastern and central United States and southeastern Canada. [3] [4] It is one of the most common trees in the United States.
NP-complete special cases include the edge dominating set problem, i.e., the dominating set problem in line graphs. NP-complete variants include the connected dominating set problem and the maximum leaf spanning tree problem. [3]: ND2 Feedback vertex set [2] [3]: GT7 Feedback arc set [2] [3]: GT8 Graph coloring [2] [3]: GT4
Acer laevigatum is an evergreen tree growing to a height of 10–15 m or more, with a trunk up to 50 cm diameter. The leaves are smooth, unlobed, leathery, olive-green, and about 6–15 cm long and 3–5 cm wide, with a short 1-1.5 cm petiole. The leaves are normally persistent, and only drop in winter in unusually severe frost.