Saxifragaceae
Tiarella trifoliata

Foamflower

Mound of leaves, tall stems, slightly hairy throughout. Basal leaves on long petioles, 1–5 in. across, lobed, sharp-toothed; stem leaves smaller, undivided but toothed. Flowers small, held in spreading cluster at top of thin stems, 5 petals, thread-like, 10 stamens extending upward. Grows in moist shady woods, edge of streams, rivers, below 4000 ft. Var. trifoliata, with leaves divided into 3 separate leaflets on short stalks, is shallowly lobed, sharp-toothed, found almost exclusively west of the Cascades. Var. unifoliata is shallowly lobed, with 3–5 lobes, sharply toothed; grows on both sides of the Cascades and in the Olympics, generally at higher elevations.

  • Rarity: Common
  • Flowering Time: Late Spring, Early Summer
  • Life Cycle: Perennial
  • Height: 6--24 inches
  • Habitat: West-Side Forest, East-Side Forest, Moist Riverbanks
  • Found In: Crater Lake NP, Mt. Rainier NP, Olympic NP, N Cascades NP
  • Native: Yes