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General: Perennial herb from a deep root; stems erect, branched, 30-100 cm tall, glabrous to slightly hairy.
Leaves: Opposite, broadly egg-shaped to rounded, to 10 cm long, tips pointed, heart-shaped to squared off at base, basically glabrous; stalks 5-20 mm long.
Flowers: Inflorescence of umbels grouped in branched clusters; flower stalks hairy; bracts of inflorescence saucer-shaped, about 1 cm wide and papery in fruit, bracts 5, about 2/3 fused, base short-hairy, lobes glabrous; perianth white or pale pink, 8-10 mm long, broadly funnel-shaped with widely-flaring 5-lobed limb.
Fruits: Achenes, broadly club-shaped, 4-6 mm long, 5-angled, wrinkled or warty, usually densely hairy.
Source: The Illustrated Flora of British Columbia
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