| General Description | Due to habitat loss and degradation this species has been placed on the IUCN Red List as globally threatened. |
| Habitat | Valleys in mixed forests in north-west and southern Yunnan at an altitude of 2,000-3,200 m. |
| Bark/Stem Description | Grey bark with vertical fissures, branchlets greyish brown when young, maturing to a dark greyish-brown. |
| Flower/Leaf Bud Description | Grey oval buds with scales along the margin. |
| Leaf Description | Green, thicker leaf, 3 ovate lobes, a cordate base, primary veins and 21-24 secondary veins, 15-25x15-25 cm. |
| Fruit Description | Convex, winged nutles, yellowish in colour, 4-4.5x1.5-1.7cm, produced in September. |