Sambucus cerulea ssp. cerulea

General:
Deciduous, erect shrub, occasionally a small tree, 1-5 (sometimes to 10) m tall, the trunk diameter to 25 cm, often several-stemmed from basal suckers; twigs soft, pithy, glaucous; old bark finely fissured.

Leaves:
Opposite, stalked, large, compound, pinnately divided into 5-9 leaflets, which are lanceolate to narrowly egg-shaped, 5-15 cm long and 2-6 cm wide, often asymmetric at the base, abruptly sharp-pointed at the tip, saw-toothed on the margins, and usually glabrous.

Flowers:
Inflorescence of numerous, small flowers in a flat-topped, 4-20 cm wide, umble-like cluster with 4-5 spokes; corollas wheel-shaped, white or cream; petals fused at base into short, flat tubes that spread (4-7 mm across) to 5 lobes that are longer than the tubes.

Fruits:
Berrylike, globose, 4-6 mm across, powder blue (bluish-black with a heavy, waxy bloom), with 3-5 wrinkled stones, each enclosing a seed.

Source:  The Illustrated Flora of British Columbia

Synonyms and Alternate Names:
Sambucus nigra subsp. cerulea (Raf.) R. Bolli