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

Acer negundo L.
box elder (Manitoba maple)
Sapindaceae (Horse-chestnut family)
(Previously in Aceraceae)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #3607)

E-Flora BC Static Map
Distribution of Acer negundo
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Species Information

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Deciduous, spreading tree up to 20 m tall; young branches glabrous to finely hairy, light brown, becoming furrowed with age.
Opposite, pinnately compound, with 3-7 (9) leaflets, oblong-lanceolate to oblanceolate, coarsely few-toothed, usually hairy.
Inflorescence of racemes in dense axillary clusters on slender stalks, male and female flowers on separate trees; petals lacking.
Winged in pairs, 2.5-3.8 cm long, hairy, pairs attached in a V-shape.
This species is probably naturalized in BC.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

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

Habitat / Range

Mesic to dry sites in the lowland to montane zones; rare (sometimes garden escape) in S and NE BC; SE AB to W ON, disjunct along Great Lakes.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Acer negundo

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




Elevation (metres) 330 620 1311
Slope Gradient (%) 0 27 91
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
260 262 265
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 4 5
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: ESSF(1), IDF(2), PP(2)


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.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References