Tilia (original variety), tree, 20 meters high, bark gray, straight split; branchlets nearly bare, apical buds glabrous or hairy. Leaves oval, 7-14 cm long, 5.5-9 cm wide, apex short-pointed or acuminate, base unilateral cordate or oblique truncated, upper glabrous, lower initially star-shaped villus, later barren, axillary hairs, dry gray or brown-green, lateral veins 6-7 pairs, upper margin with sparse and small dentate processes; petiole 3-5 cm long, nearly bare. Cymes 8-13 cm long, glabrous; petioles 7-9 mm long; bracts narrowly oblanceolate, 10-16 cm long, 1.5-2.5 cm wide, sessile, apex obtuse, base rounded or wedge-shaped, usually glabrous above, stellate pubescence below, 5-7 cm connate with petioles; sepals oblong lanceolate, 5 mm long, hairy on the inner surface; petals 7-8 mm long; Stamens 6-7 mm long; stamens 5 mm long; ovary hairy, style 4-5 mm long. Fruit globose, 8-10 mm wide, angular, with small protuberances, stellate hairs. Flowering in July.
Tilia trees are suitable for growing in deep, fertile and moist soil, and can grow in valleys and slopes. It has deep roots, medium growth rate and strong germination ability. Basswood likes sunshine, seedlings and saplings are more shady, like warm, cool and humid climate. Often single plant is scattered in the mixed forest of Korean pine and broad-leaved. Basswood has strict requirements on soil. It likes wet soil with good fertilizer and drainage. It is not tolerant to wet marshes, cold and toxic, and has fewer pests.
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