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.
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 over the
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
Source: Klinkenberg 2013
Synonyms and Alternate Names:
Viburnum opulus subsp. trilobum (Marsh.) R.T. Clausen
Viburnum trilobum Marsh.
TAXONOMIC KEY TO VIBURNUM
1. Leaves deeply 3-lobed; sterile corollas 1.5-2.5 cm across; stamens conspicuous, exserted from the corollas V. opulus
1. Leaves shallowly 3-lobed; corollas all 0.4-0.7 cm across; stamens inconspicuous V. edule