Tilia japonica, a height of 8-10m deciduous tree, inhabits hilly districts from ridges and hillsides through mountain streams, growing to 8-10m in size, occasionally up to 30m in places along the streams. The phyllotaxis is alternate; blades are 4-10 cm long, 4-8 cm wide, in the shape of an uneven heart, circular, with pointed tips extending in a tail-like manner. The bases are somewhat cordate, and the margins have sharp serrated edges. Cymes, 5-8cm long, hang from axils and set 10 or more about 1 cm in diameter pale yellow-brown flowers; petals are 5mm long and have many stamens. Bloom time: June-July.