| General Description | Reported as rare in Japan, this tree has been placed on the IUCN Red List as least concern. |
| Habitat | Mountain valleys and river banks at an altitude of 200-1,000 m. |
| Bark/Stem Description | Smooth, grey or brownish grey in colour. Dark greyish-brown, glabrous branches and branchlets. |
| Flower/Leaf Bud Description | 2 glabrous, ribbed scales. |
| Leaf Description | Obovate-oblong, oblanceolate-oblong or oblong, 6-13 lateral veins on each side, 6-16 x 2.5-7 cm. |
| Flower Description | Female inflorescences grouped 2-4 in a raceme, oblong and penduncle. |
| Fruit Description | Broadly ovate nutlet with delicate wings, 1/4 the width of the nutlet, produced July through August. |