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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.
Rhytisma acerinum can occur in many tree species, with the most commonly affected genus being Acer.The species most commonly affected by the disease are Norway maple (Acer platanoides), silver maple (Acer saccharinum), and sycamore maple (Acer pseudoplatanus).
Acer oblongum is a medium-sized evergreen to semi-deciduous tree reaching a height of approximately 15–22 metres (49–72 ft). Unique among maples, this plant stays green all winter. Unique among maples, this plant stays green all winter.
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 floridanum (syn. Acer saccharum subsp. floridanum (Chapm.) Desmarais, Acer barbatum auct. non Michx.), commonly known as the Florida maple and occasionally as the southern sugar maple or hammock maple, is a tree that occurs in mesic and usually calcareous woodlands of the Atlantic and Gulf coastal plain in the United States, from southeastern Virginia in the north, south to central ...
Acer griseum, the paperbark maple or blood-bark maple, [3] is a species of flowering plant in the family Sapindaceae, native to central China. [4] Acer griseum is found in the Chinese provinces of Gansu , Henan , Hubei , Hunan , Shaanxi , Shanxi and Sichuan , at altitudes of 1,500–2,000 m (4,921–6,562 ft).
Acer circinatum, or vine maple, is a species of maple native to northwestern North America.Vine maple typically grows as a low-elevation coastal tree in temperate areas of high precipitation such as the west coast of Oregon and northern California, as well as the temperate rainforests of Washington and British Columbia. [3]
Acer sino-oblongum, the south China maple, is a species of evergreen maple tree native to China's Guangdong Province and Hong Kong. [2] Acer sino-oblongum is a short tree up to 7 meters tall. The leaves are elliptical and waxy, unlobed and untoothed unlike the multi-lobed leaves found on most maples. The tree occurs naturally in coastal ...