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그루안

Caudate-leaf Hackberry

Celtis jessoensis · Cannabaceae · 풍게나무

How to spot it

Distinguished from the Chinese hackberry by the lower half of the leaf being wider than the upper half.

Look

Leaves
Elliptic or long-elliptic, 2 to 10 cm long, with a long tail-like tip. Sharp, inward-curved teeth on the upper part, none on the lower third, and three pairs of lateral veins.
Flowers
Flowers open in May with four tepal lobes spreading sideways.
Fruit
A round drupe 6 to 8 mm across ripening black in October; the fruit stalk is 25 mm long and hairless.
Bark
Gray-black, smooth bark; the older the tree, the more the trunk bulges lumpily into an unusual shape.

Where it grows

In Korea
Native (Korean Peninsula)
Native to
Also found in Japan; in Korea it grows at 100 to 1,100 m elevation nationwide except Pyeongannam-do, and also on islands such as Ulleungdo, Deokjeokdo and Jeju.
Ecology
Grows in forests, around villages, on mountain foothills and in valleys. Likes fertile sandy loam with adequate moisture and grows well in shade or sun, but poorly in dry places. Pollution resistance is fairly strong and it also grows well in coastal areas.

Sources