Distribution: Widely distributed throughout Washington except in central lowlands; British Columbia south to Oregon, east to Idaho and Montana.
Habitat: Moist, shady woods at low to mid-elevations in the mountains.
Conservation Status: Not of concern
Perennial herbs from rhizomes, the stems trailing, freely-rooting, forming large mats.
Leaves 2 per node, the petioles 5-20 cm. long; leaf blades reniform, cordate-based, 4-10 cm. long and up to 15 cm. broad, obtuse to acute, persistent.
Flowers solitary on peduncles 1-3 cm. long; calyx brownish-purple to greenish-yellow, the 3 lobes long-tapered and acute, flared above the bell-shaped base, 3-8 cm. long; petals none; the base of the staminal tube with 3 linear bracts 1-3 mm. long alternate with the calyx lobes; stamens 12, united into a tube below, alternately longer and shorter; ovary inferior.