E-Flora BC: Electronic Atlas of the Flora of British Columbia

Acer glabrum var. douglasii Torr. (Hook.) Dippel
Douglas maple
Sapindaceae (Horse-chestnut family)
(Previously in Aceraceae)

Introduction to Vascular Plants
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E-Flora BC Static Map
Distribution of Acer glabrum var. douglasii
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Species Information

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General:
Deciduous shrub or small tree, up to 10 m tall; stems branching, glabrous, young twigs reddish; bark greyish to reddish-purple.
Leaves:
Opposite, 2-12 cm wide, 3- to 5-lobed, glabrous to sparsely glandular short-hairy, coarsely toothed, paler on the lower surface, turning yellow to orange or crimson in fall.
Flowers:
Inflorescence of flat-topped, terminal or axillary clusters of about 10 flowers, male and female flowers on separate or same plants, appearing with the leaves; petals and sepals yellowish-green.
Fruits:
Winged, in pairs, 2-3 cm long, greenish-brown, pairs attached in a V-shape.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Green
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Brown
Present from Summer to Fall
Source:  The USDA

Habitat / Range

Mesic to dry forests and rocky slopes in the lowland and montane zones; common throughout BC, except Queen Charlotte Islands and adjacent coast and NE BC; N to SE AK, E to AB and S to OR and MT.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Acer glabrum var. douglasii

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class

Minimum

Average

Maximum

Elevation (metres) 10 839 1890
Slope Gradient (%) 0 25 90
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 235 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 3 7
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
486
Modal BEC Zone Class
IDF
All BEC Zones (# of stations/zone) species was recorded in: BG(4), CWH(7), ESSF(3), ICH(159), IDF(197), MS(24), PP(4), SBPS(1), SBS(26)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Acer douglasii Hook.
Acer glabrum subsp. douglasii (Hook.) Wesmael

Taxonomic and Nomenclatural Links

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General References