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그루안

Korean birch

Betula costata · Betulaceae · 거제수나무

Look

Leaves
Egg-shaped elliptic to long egg-shaped, 5-8 cm long, narrowing to a long point, with double-toothed margins and 10-16 pairs of side veins. The leaf stalk is 8-15 mm.
Flowers
Blooms in May-June; male catkins hang down, and female catkins are long elliptic, 1.8-2 cm long.
Fruit
The fruiting spike is egg-shaped, about 2 cm long, on a short stalk. The wings of the nutlets are narrower than the nutlet and it ripens in September.
Bark
White or brownish white, peeling like sheets of paper.

Where it grows

In Korea
Native
Native to
Northeastern China; in Korea it grows along the Baekdudaegan down to Jirisan in Jeollanam-do, native at 600-2,100 m elevation in the central region and north.
Ecology
Grows in groups on dry, poor ground; in its Taebaeksan habitat it grows along valleys. It grows on Taebaeksan, Jirisan, Seoraksan and in the central region and north, but not in large numbers.

Sources