Acer saccharum Marshall

Species: Acer saccharum Marshall, Genus: Acer, Family: Sapindaceae, Group: Angiosperms

(Acer saccharum Marshall)

-> Genus: Acer -> Family: Sapindaceae -> Group: Angiosperms

Habitus

it is a tree growing to a height of 35 - 35 m with a spreading crown
bark is grey-brown, smooth, later relatively shallow longitudinally fissured bark is formed

Acer saccharum (Sugar maple) - Hrádok Arboretum (10/2021)

Buds

buds are arranged crosswise oppositely
individual buds are slender, conical, sharply pointed
terminal bud is larger, lateral ones are smaller, more or less pressed to the twig
covering scales are numerous, dark brown, dull

Shoots

shoots are straight, brownish-red, covered with small, convex whitish lenticels

Leaves (assimilation organs)

the leaves are simple, palmately 3 - 5 lobed, up to 20 cm large, only slightly wider than they are long
the edges are sparsely and distinctly toothed, dark green on the upper side, light green on the lower side with hairs in the vein axils
the shape of the leaves is similar to the Acer platanoides

Acer saccharum (Sugar maple) - twig with leaves

Acer saccharum (Sugar maple) - underside

Flowers

it is a monoecious tree with bisexual flowers
it blooms before the leaves develop, or at the same time
flowers are yellow-green, grouped in hanging panicles

Fruits – seeds

fruit is a winged achene, wings are practically parallel
achene with a wing is up to 2.5 cm large

Extension

in eastern part of North America
in Slovakia it occurs only as a cultivated species

Ecology

its occurrence is tied to areas with a colder climate
in more southern areas its occurrence is limited to cold ravines and moist plains
it is undemanding to soil, it does not tolerate waterlogged sites

Significance

the sugar maple (Acer saccharum) is one of the most important trees in Canada
it is a source of sap, which is used to prepare maple syrup
in Slovakia it is important as an ornamental park tree, especially in autumn with golden-colored leaves

Acer saccharum (Sugar maple) - Hrádok Arboretum (10/2022)

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