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그루안

White Oak

Quercus alba · Fagaceae · 미국흰참나무

How to spot it

Leaf lobes are rounded without bristles; pale gray-white bark and acorns with shallow caps.

Look

Leaves
Leaf lobes are rounded, without bristle-like tips.
Flowers
Male flowers are green-yellow in long drooping catkins; female flowers are smaller, a few together in the axils of new leaves.
Fruit
Oblong acorns ripen from green to light brown. A shallow cap with bumpy scales covers about a quarter to a third of the acorn; it matures in the first year.
Bark
White to light gray bark with shallow furrows and narrow plate-like scales.

Where it grows

Native to
From southeastern Canada through the central and eastern United States.
Ecology
Grows in forests on dry slopes, valleys and ravines, and tolerates some drought once established. Acorns feed birds, squirrels, deer and bears.

Sources