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Species: Acer platanoides L., Genus: Acer, Family: Sapindaceae, Group: Angiosperms

(Acer platanoides L.)
-> Genus: Acer -> Family: Sapindaceae -> Group: Angiosperms

Habitus

  • it grows to a height of 20 - 30 m, crown is ovoid to broadly ovate, densely leafy
  • bark is reddish-brown to brown, later greyish
  • bork is dark grey, shallowly fissured into narrower rectangular roof-like raised formations, relatively firm
Acer platanoides (Norway maple, Milk maple)
Acer platanoides (Norway maple, Milk maple) - bark
Acer platanoides (Norway maple, Milk maple) - (4/2020)
Acer platanoides (Norway maple, Milk maple) - bark (Betliar Manor Nature Park, 8/2020)
Acer platanoides (Norway maple, Milk maple) - Betliar Manor Nature Park (8/2020)
Acer platanoides (Norway maple, Milk maple) - Chateau under Murán Castle (10/2020)

Buds

  • buds are arranged crosswise, they are ovate, sessile
  • terminal one is larger lateral ones are smaller, pressed to the twig !
  • covering scales are oval, brownish-red, glabrous, shiny
Acer platanoides (Norway maple, Milk maple)
Acer platanoides (Norway maple, Milk maple)
Acer platanoides (Norway maple, Milk maple)
Acer platanoides (Norway maple, Milk maple)

Shoots

  • shoots are straight, olive green, later reddish brown,  glabrous, shiny
  • leaf scars touch each other
Acer platanoides (Norway maple, Milk maple)
Acer platanoides (Norway maple, Milk maple)

Leaves (assimilation organs)

  • the leaves are simple, palmately 5 - 7 lobed, 8 - 12 x 9 - 12 cm large
  • the individual lobes have several sharp pointed protrusions
  • the notches in the leaf blade are rounded !
  • the leaves are with entire margin
  • the petiole is 4 - 15 cm long, when broken off it exudes a white sticky sap
Acer platanoides (Norway maple, Milk maple) - top side
Acer platanoides (Norway maple, Milk maple) - top side
Acer platanoides (Norway maple, Milk maple) - red-leaved form

Flowers

  • it is a monosexual tree with bisexual flowers
  • it flowers in April - before the leaves develop, or simultaneously
  • flowers are yellow-green, grouped in upright panicles
Acer platanoides (Norway maple, Milk maple)
Acer platanoides (Norway maple, Milk maple)
Acer platanoides (Norway maple, Milk maple)
Acer platanoides (Norway maple, Milk maple) - during flowering (Vavrišovo, 5/2022)
Acer platanoides (Norway maple, Milk maple)

Fruits – seeds

  • the fruit is a winged dicotyledon fused at an obtuse angle !
  • the wings are green to reddish, brown when ripe, 4 - 6 cm long, equally wide along the entire length
  • the seeds are flat
  • the germination rate is 50 - 80% and it begins to bear fruit between 20 - 30 years
  • seedling:
    • the cotyledons are ligulate with one midrib and two parallel veins on both sides, they are widened towards the end, slightly folded across
    • the first leaves are petiolate, ovate-cordate, slightly pointed, weakly lobed, the leaf margin is slightly toothed
Acer platanoides (Norway maple, Milk maple)
Acer platanoides (Norway maple, Milk maple)
Acer platanoides (Norway maple, Milk maple)
Acer platanoides (Norway maple, Milk maple) - winged dioecious leaves are fused at an obtuse angle

Extension

  • ± all of Europe except the British Isles and Western Europe
  • in Slovakia it occurs from the lowest altitudes to an average of 1,000 (1,464) m above the sea level
  • it is an interspersed – individually mixed tree species in oak and beech forests
  • it grows on ridges, scree and in valleys together with sycamore (Acer pseudoplatanus), European ash (Fraxinus excelsior), species of the genus elm (Ulmus) and lime (Tilia)
  • it belongs to the so-called valuable broadleaves
Acer platanoides (Norway maple, Milk maple) - Betliar Manor Nature Park (8/2020)
Acer platanoides (Norway maple, Milk maple) - Chateau under Murán Castle (10/2020)

Ecology

  • it is a semi-shaded tree, frost-resistant, it is relatively demanding on nutrients (but less than the mountain maple), mainly on nitrogen
  • it requires a certain soil moisture
  • it is part of the hard liquor
  • it also tolerates urban environments well
  • the root system is round

Significance

  • it is valuable broadleaf tree
  • it is a reclamation and groundcover tree, protects the soil and improves it with its fallow
  • it is a park tree that creates many shapes (spherical form) as well as colored leaf forms (shear-leaved, red-leaved, variegated - with a yellow edge)
  • the wood is coreless, yellowish-white, heavy, hard, shiny, high-quality
  • the wood is used to make violins
Acer platanoides (Norway maple, Milk maple) - (4/2020)
Acer platanoides (Norway maple, Milk maple) - red-leaved form
Acer platanoides (Norway maple, Milk maple) - red-leaved form
Acer platanoides (Norway maple, Milk maple) - red-leaved form (Liptovský Hrádok Arboretum, 5/2021)
Acer platanoides (Norway maple, Milk maple) - Vavrišovo (9/2021)
Acer platanoides (Norway maple, Milk maple) - during flowering (Vavrišovo, 5/2022)

From history

Acer platanoides (Norway maple, Milk maple) - Unsere Waldbäume, Sträucher und Zwergholzgewächse. Heidelberg, Carl Winter`s Universitätsbuchhandlung
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