Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon, east across Canada and the northern U.S. to the Atlantic Coast.
Habitat: Moist woods at low to moderate elevations.
Growth Duration: Perennial
Conservation Status: Not of concern
Deciduous shrub or small tree 1-4 m. tall.
Petioles 1-3 cm. long with linear stipules 2-6 mm. long, glabrous except for one or more stalked glands near the summit; leaves opposite, usually with stiff hairs along the mid-vein beneath, palmately 3-veined and 3-lobed, 4-12 cm. long and wide, the lobes usually coarsely few-toothed and acuminate.
Inflorescence a compound umbel, short-pedunculate, 5-15 cm. wide, the marginal flowers enlarged and neutral, their corollas rotate, white, deeply 5-lobed, somewhat irregular, 1.5-2.5 cm. across; perfect flowers much smaller, 3-4 mm. across; stamens 5, exerted; ovary inferior, 3-celled, but only I cell fertile.
Fruit a drupe, 1-1.5 cm. long, with a large, flattened stone, red.