Acer glabrum var. douglasii
Rocky Mountain Maple
A-ser GLAH-brum dug-LAS-ei
Native to (or naturalized in) Oregon:
- Broadleaf deciduous small tree, to 30 ft (10 m) tall, or often a multi-stemmed shrub 4-6 ft (1.2-1.8 m) tall, upright, twigs reddish or grayish in shade. Leaves opposite, simple, ovate, 6-12(20) cm across, 3-5 lobes (occasionally divided into 3 leaflets), base slightly heart-shaped, margin deeply, sharply, and irregularly or double toothed, shiny dark green above, blue-green below; petiole long (4-10 cm), slender, often reddish tinged. Fall foliage ranges from yellow to orange to crimson. Flowers 5 mm across, yellowish green, with 5 petals, in terminal clusters. Male and flower flowers usually appearing on separate trees. Appear with the leaves. Fruit wings 2-2.5 cm long, nearly parallel; green then pink or reddish, turing light brown in fall.
- Sun to part shade.
- Hardy to USDA Zone 4 Native range from southeastern Alaska, British Columbia, Alberta, Montana, Idaho, Washington and Oregon.
- douglasii: named after David Douglas (1798-1834), Scottish botanist and plant explorer.
Click image to enlarge