| General Description | A majestic, large tree, with leaves wilting, giving it the appearance of suffering from the early stages of wilt. Excellent autumn colour. This subspecies has been placed on the IUCN Red List as least concern. |
| ID Characteristic | Often confused with A. saccharum and for a time was considered a subspecies. Leaves similar to A. saccharum but appear to wilt, the leaf axil is often slightly tomentose. The petiole often has more lenticels than A. saccharum. |
| Shape | A large somewhat rounded crown. |
| Propagation | Seed stratified at 4C for 4 months. Softwood cuttings in June. |
| Cultivation | Easily cultivated on good, well drained loam soils. |
| Pests | Southwest injury due to its thin bark. I have lost a mature specimen to verticillium wilt, probably due to the roots intertwined with infected Norway Maples. Disinfect all pruning equipment before and during use. |
| Notable Specimens | Throughout Southern Ontario Forests. The A. M. Cuddy Gardens, Strathroy, Ontario, Canada. |
| Habitat | Climax forests of the Carolinian zone, including Southern Ontario, Canada. |
| Bark/Stem Description | Smooth, medium beige when young. Developing regular, shallow fissures and becoming light grey in colour upon ageing. |
| Flower/Leaf Bud Description | Imbricate and pubescent and slightly more swollen than its counterpart A. saccharum |
| Leaf Description | Broadly palmate, opposite, 7-15 cm wide , with a slight droop towards the lobes. The leaf vein axil slightly tomentose. Leaves are usually 3-5 lobed. |
| Flower Description | Greenish, yellow, 3-5 cm long in April-May. |
| Fruit Description | Samara in September-October. |
| Colour Description | Excellent autumn colour, a rich consistent butter yellow. |
| Texture Description | Medium textured. |
