Deciduous small tree or shrub, 1-8 m tall, often propagating by layering, sometimes forming dense thickets; stems branching, pale green to reddish, becoming brown with age.
Opposite, 3-12 cm wide, 7- to 9-lobed, hairy on the lower surface and on the upper surface along the veins, becoming golden to bright red (in full sun) in the autumn.
Inflorescence of flat-topped, indeterminate clusters at the end of shoots; petals white, 6-9 mm wide; sepals usually red.
Winged, in pairs, 2-4 cm long, widely spreading, green becoming reddish-brown, pairs attached at a 180degree angle, or nearly so.
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Present from Summer to Fall
Source: The USDA
||Value / Class
Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
of field plots
species was recorded in:
BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in
|CDF(1), CWH(335), ESSF(3), ICH(1), IDF(71), MS(1)|
Source: Klinkenberg 2013
TAXONOMIC KEY TO ACER
1. Leaves pinnately compound; petals absent ..........A. negundo
2. Flowers 10-50; inflorescence racemose or in panicles; trees up to 30 m tall.
3. Leaves grey, white or purplish below, the stalks without milky juice when cut; inflorescence in long, hanging panicles; fruits glabrous ..........A. pseudoplatanus
4. Leaves lobed beyond the middle, the tips abruptly sharp-pointed; inflorescence racemose; fruits hairy ..........A. macrophyllum
2. Flowers usually less than 10; inflorescence umbellate or corymbose; plants usually shrublike and less than 10 m tall.
5. Leaves 3- to 5-lobed, glabrous to sparsely glandular short-hairy; sepals green.......... A. glabrum