| General Description | This species is considered to be locally threatened in Japan and has been placed on the IUCN Red List as least concern. |
| Habitat | Forests, dry or moist slopes and rocks on mountain summits at an altitude of 400-1,30 m. |
| Bark/Stem Description | Fissured, blackish-brown with glabrous reddish-brown or dark brown branches. |
| Leaf Description | ovate, broadly ovate or elliptic, with 6-8 lateral veins on either side, 4-8 x 3.5-5 cm. |
| Flower Description | Oblong female inflorescence. |
| Fruit Description | Broad elliptic and glabrous nutlet with wings 1/2 its length, produced July through August. |
| Texture Description | Hard and dense. |