Acer yui
| Family |
| Sapindaceae (Aceraceae) |
| Genus |
| Acer |
| Species |
| yui |
| Category |
| Woody |
| Type |
| Tree (deciduous) |
| Height |
| 7 m |
| General Description |
| Occupying a fragmented area of only 366 km in total, this species has been placed on the IUCN Red List as globally threatened. |
| Habitat |
| Valleys in mixed forests at an altitude of 1,800-2,000 m. |
| Bark/Stem Description |
| Brownish-grey or blackish-grey bark with thin, glabrous branchlets. |
| Flower/Leaf Bud Description |
| Small ellipsoid with numerous scales. |
| Leaf Description |
| Broad and ovate, thin, 3 primary veins with a rounded or broadly obtuse base and 3 triangular-ovate lobes, 3-7 x 2-2.5 cm. |
| Fruit Description |
| Thin fruiting pendicel with 3-5 fruit, convex winged nutlet, 2.2 x 1 cm, produced in September. |