Parastais osis 'Diversifolia'

Distribution. In North America: from Nova Scotia to Minnesota, southwards to Florida and Texas.

Morphology. Summer-green, 20–35 m tall tree with a pyramidal or oval crown. The bark of the new trees gray, smooth, the bark of older trees dark gray, cracks. Shoots bluish-gray or brown, naked or slightly hairy, with white lenticels. Buds reddish-brown with bluish bloom. Leaves up to 30 cm long, with 3–9 leaflets. Leaflets elongated ovate or elongated elliptical, gradually pointed at the tip, with a wedge-shaped or rounded base, at the upper surface dark green, at the lower surface light green or bluish-green, up to 15 cm long, with thin, 5–15 mm long petioles. Flowers unisexsual, there is a calyx, but not a corolla. Fruit 2,5–3,5 cm long.

Ecology. In the wild is found in moist highlands. Fast-growing, light-demanding, winter-hardy, drought-tolerant, not choosy in the selection of soil.
Importance. Ornamental. Valuable wood with a wide range of applications. Different plant parts are widely used in medicine.