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그루안

Amur Linden

Tilia amurensis · Tiliaceae · 피나무

How to spot it

Characterized by a long lanceolate bract attached to the middle of the flower cluster stalk and broad egg-shaped leaves with a heart-shaped base.

Look

Leaves
Broadly egg-shaped leaves with an abruptly lengthened tip and heart-shaped base, 3 to 9 cm long; the underside is gray-green with dense brown hairs in the vein axils, and the margin has sharp teeth.
Flowers
Pale yellow, strongly fragrant flowers grow in flat clusters of 3 to 20 from late May to late July, with a lanceolate bract 5 cm long attached to the middle of the flower stalk.
Fruit
Round nuts without ridges, densely covered with white or brown hairs, mature with the bract attached from mid-August to late September.
Bark
Gray-brown bark; the trunk grows straight.

Where it grows

In Korea
Native (Korean Peninsula)
Native to
Found in China and the Russian Far East, and throughout Korea.
Ecology
Likes deep, fertile soil such as in valleys, grows mixed with oaks, Maackia and birches, and is strongly cold-hardy, shade tolerant and salt tolerant. Growth is very poor on dry, shallow soil.

Sources