Pteroceltis tatarinowii

Pteroceltis tatarinowii is a deciduous tree native to China. Common names include blue sandalwood, Qing Tan, and wingceltis. It belongs to Cannabaceae, the hops family. It grows in mountain regions, on limestone and beside streams. Its native sites lie at elevations of 328–4,921 feet [100–1,500 metres]. It grows in a temperate climate.

Garden trees reach 30–45 feet [9.1–13.7 metres] tall. Some reach 60 feet [18.3 metres]. The crown is rounded, often with more than one trunk. Mature bark peels away in strips and patches. Its shades range from gray-white to dark gray and brown. Brown stems bear clear white lenticels and egg-shaped winter buds. Fine, close-lying hairs cover young shoots and leaves, then fall away. The simple leaves grow alternately along the stems. Their shape ranges from broad and egg-like to oblong. They have toothed edges and rough upper surfaces. Tufts of soft hair grow beneath the leaves. Four to six side veins branch from each midvein. Green summer leaves turn yellow in fall.

Small green flowers open from March to May. They offer little show compared with the bark and leaves. Male flowers form clusters without stalks. Female flowers grow singly where leaves meet the stems. Winged nuts develop from August to October. They change from yellow-green to yellow-brown and hang on thin stalks. Each nut measures about half to three-quarters of an inch across.

Grow this tree in full sun for its preferred light. It also tolerates partial shade. Moist, fertile loam with good drainage suits it best. It also grows in clay, sand, and gravelly ground. Neutral to alkaline soils suit it. Established trees withstand drought, though they prefer moist soil. North Carolina State Extension lists USDA hardiness zones 4–8. It rates the tree's maintenance needs as medium. Seed offers a means of propagation.

The tree provides shade in lawns and woodland settings. Its peeling bark and yellow fall leaves give seasonal interest. It also serves as a specimen in Asian-style gardens. In China, makers use its bark fibre for Xuan paper. Its timber has value, and its seeds yield oil. The evidence does not establish whether that oil is edible. Plants For A Future lists no known food or medicinal uses. It reports no known hazards, which does not prove safety. North Carolina State Extension reports no known diseases or insect pests.