A genus of hardy deciduous trees or shrubs which delight in moist situations, preferably on the banks of a perennial running stream. They form handsome, upright, clean-stemmed trees with roundish leaves and grow to the height of from fifty to eighty feet. They are not particular as to soil, provided they are given plenty of water at the root and a sheltered situation.

Propagate by seeds sown, in early Spring, in the open ground and covered not more than one-quarter of an inch deep; the following Winter, plant them in nursery rows one foot apart; when they are three feet high, replant them where they are to remain.