노르웨이단풍(2)
https://daehyo49.tistory.com/7815935
노르웨이단풍(1)
https://daehyo49.tistory.com/7808011
데보라노르웨이단풍
https://daehyo49.tistory.com/7807670
학명 : Acer platanoides L.
분류 : 단풍나무과(Aceraceae)/(APG) 무환자나무과(Sapindaceae)
사진 : 2024.02.07 한텍식물원
설탕단풍, 은단풍, 노르웨이단풍 3종 중
노르웨이단풍이 가장 잎이 얕게 갈라지고
열편 끝은 거의 침상으로 길게 뻗친다
Wikipedia 설명
Acer platanoides, commonly known as the Norway maple, is a species of maple native to eastern and central Europe and western Asia, from Spain east to Russia, north to southern Scandinavia and southeast to northern Iran.[2][3][4] It was introduced to North America in the mid-1700s as a shade tree.[5] It is a member of the family Sapindaceae.
Description
Acer platanoides is a deciduous tree, growing to 20–30 m (65–100 ft) tall with a trunk up to 1.5 m (5 ft) in diameter, and a broad, rounded crown. The bark is grey-brown and shallowly grooved. Unlike many other maples, mature trees do not tend to develop a shaggy bark. The shoots are green at first, soon becoming pale brown. The winter buds are shiny red-brown.
The leaves are opposite, palmately lobed with five lobes, 7–14 cm (2+3⁄4–5+1⁄2 in) long and 8–25 cm (3+1⁄4–9+3⁄4 in) across; the lobes each bear one to three side teeth, and an otherwise smooth margin.[citation needed] The leaf petiole is 8–20 cm (3+1⁄4–7+3⁄4 in) long, and secretes a milky juice when broken. The autumn colour is usually yellow, occasionally orange-red.[6][7][8]
The flowers are in corymbs of 15–30 together, yellow to yellow-green with five sepals and five petals 3–4 mm (1⁄8–3⁄16 in) long; flowering occurs in early spring before the new leaves emerge. The fruit is a double samara with two winged seeds. the seeds are disc-shaped, strongly flattened, 10–15 mm (3⁄8–5⁄8 in) across and 3 mm (1⁄8 in) thick. The wings are 3–5 cm (1+1⁄4–2 in) long, widely spread, approaching a 180° angle. It typically produces a large quantity of viable seeds.
Under ideal conditions in its native range, Norway maple may live up to 250 years, but often has a much shorter life expectancy; in North America, for example, sometimes only 60 years. Especially when used on streets, it can have insufficient space for its root network and is prone to the roots wrapping around themselves, girdling and killing the tree. In addition, their roots tend to be quite shallow and thereby they easily out-compete nearby plants for nutrient uptake.[9] Norway maples often cause significant damage and cleanup costs for municipalities and homeowners when branches break off in storms as it does not have strong wood.[10][11]
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