Ulmus davidiana (Japanese Elm, David Elm)

Ulmus davidiana, sometimes known as the David Elm, is a deciduous tree native to China, Mongolia, Korea, Siberia, and Japan. It may reach a maximum height of 15 metres. The leaves have a rough top surface and are obovate to obovate-elliptic in shape. Wind-pollinated petal-less blooms appear on second-year stems in the spring, followed by obovate broad samarae.

The flowers are tiny and emerge in drooping clusters of three to five in the early spring before the leaf buds develop.

Fruits are Rounded, flat, pappery, wafer-like samaras, 3/8 to 1/2 inch wide, deeply notched at apex, hairless except for the edge; mature in spring.