Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Washington, east to Idaho and Montana; also occurring in central and northeastern North America.
Habitat: Dry waste ground, forest understory, and other disturbed sites.
Origin: Introduced from Europe
Growth Duration: Perennial
Conservation Status: Not of concern
Deciduous, upright shrub to 4 m. tall, the stems with 3-pointed spines at the nodes.
in whorls, obcordate to oblanceolate, with numerous fine, sharp teeth.
Inflorescence of bracteate, pendant racemes; perianth of 5 alternating whorls of 3 members each; outer 3 greenish-yellow, 2-3 mm. long (bracts); next 6 bright yellow, 6-8 mm. long (sepals); inner 6 bright yellow, slightly shorter, bi-lobed, oblong (petals); stamens 6, opposite the petals; style none, stigma sessile.
Berry scarlet, ellipsoid.