큰잎단풍-[정명]Acer macrophyllum Pursh

과명	Aceraceae (단풍나무과)	속명	Acer (단풍나무속)
전체학명	[정명] Acer macrophyllum Pursh	추천명	큰잎단풍
이명		외국명	big-leaf,Canyon,Oregon,Oregon maple,Big leaf maple,Maple Big-leaf,Maple Oregon

추천명변경: 마크로필룸단풍 -> 큰잎단풍

Acer macrophyllum, the bigleaf maple or Oregon maple, is a large deciduous tree in the genus Acer.

It is native to western North America, mostly near the Pacific coast, from southernmost Alaska to southern California. Some stands are also found inland in the foothills of the Sierra Nevada of central California, and a tiny population occurs in central Idaho.

Acer_macrophyllum_range_map_1.png (4096×4096) (wikimedia.org)

Bigleaf maple can grow up to 48 metres (158 feet) tall, but more commonly reaches 15–20 m (50–65 ft) tall and 90–120 cm (35–47 in). The species' current national champion for size is located in Lane County, Oregon. It is 36 m (119 ft) tall with a crown spread of 28 m (91 ft), with an average diameter at breast height (dbh) of about 3.7 m (12 ft). The previous national champion is located in Marion, Oregon, and is 27 m (88 ft) tall with a crown spread of 32 m (104 ft), with an average dbh of about 2.5 m (8 ft). The bark is gray brown, darkening and developing ridges with age.

The bigleaf maple has the largest leaves of any maple, typically 15–30 centimetres (6–12 inches) across with five deeply incised palmate lobes, with the largest running to 61 cm (24 in). The stems are 15–30 cm (6–12 in) long and contain milky sap. In autumn, the leaves turn gold and yellow, contrasting against backdrops of evergreen conifers. In spring, the tree produces flowers in pendulous racemes 10–15 cm (4–6 in) long, greenish-yellow with inconspicuous petals. It is hermaphroditic, bearing both male and female flowers in each raceme. The flowers appear in early spring, before the leaves. The fruit is a paired winged samara, each seed 1–1.5 cm (3⁄8–5⁄8 in) in diameter with a 4–5 cm (1+5⁄8–2 in) wing. Bigleaf maple begins bearing seed at about ten years of age.

In May 2018 the oldest two Oregon maples in Europe, 175 years old, were removed from Trinity College Dublin (TCD), Ireland. The first had an interior which was beginning to rot, and it fell after inclement windy weather. The second, also infected, was cut down as the same fate was expected. Both were in the adjoining grassy area which was originally the cemetery of All Hallows and is now the Front Square of TCD.

Bigleaf maple can be found west of British Columbia's Coast Ranges and the Cascade Range, from Vancouver Island to California. It usually grows from sea level to elevations of 450 m (1,480 ft), and more exceptionally 1,200 m (3,900 ft). It can form pure stands on moist soils in proximity to streams, but are generally found within riparian hardwood forests or dispersed, (under or within), relatively open canopies of conifers, mixed evergreens, or oaks (Quercus spp.) In cool and moist temperate mixed woods they are one of the dominant species. It is very rare north of Vancouver Island though cultivated in Prince Rupert, near Ketchikan, and in Juneau.

Acer macrophyllum - Wikipedia

 

 

 

https://youtu.be/Fju-ejK2faY?t=134

Acer macrophyllum leaf - Acer macrophyllum - Wikipedia

https://youtu.be/Xbma869jMQY