Viburnum opulus var. americanum L. Aiton
American bush-cranberry (American cranberrybush)
Adoxaceae (Honeysuckle family)
(Previously in Caprifoliaceae)

Introduction to Vascular Plants


© Jack Bowling     (Photo ID #70827)


E-Flora BC Static Map

Distribution of Viburnum opulus var. americanum
Click here to view the full interactive map and legend

Species Information

Deciduous, erect, large shrub, 1-4 m tall; twigs glabrous; bark smooth, grey.
Opposite, stalked, broadly egg-shaped to nearly round in outline, 5-13 cm long, all deeply and sharply 3-lobed, coarsely blunt-toothed, nearly glabrous or hairy beneath on the veins; stalks with a shallow groove and small glands upward.
Inflorescence a flattish cluster of several to many flowers, 5-15 cm across, with sterile marginal flowers much larger than the fertile inner ones; petals white, fused at bases into tubes that spread (1.5-2.5 cm wide) to 5 large lobes in the marginal flowers, to 3-4 mm wide in the small inner flowers; stamens conspicuous, exserted of corolla, the filaments 3-5 mm long.
Berrylike drupes, clustered, scarlet, 0.8-1.5 cm long, each with a single, large, flattened stone.

SourceThe Illustrated Flora of British Columbia


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.

USDA Species Characteristics

Flower Colour:
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Red
Present over the
Source:  The USDA


Ecological Framework for Viburnum opulus var. americanum

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)
802 625 980
Slope Gradient (%)
1 0 3

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

360 360 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
6 6 7
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

All BEC Zones (# of stations/zone) species was recorded in


Habitat and Range

Moist streambanks and lakesides in the steppe and montane zones; infrequent in WC, SC and SE BC; E to NF and S to PA, WY, ID, and WA.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Viburnum opulus subsp. trilobum (Marsh.) R.T. Clausen
Viburnum trilobum Marsh.