Trillium petiolatum

Roundleaf Trillium

Prostrate or with short erect stem. Leaves on long horizontal petioles near soil level, bright green, rounded, easily mistaken for plantain. Flower in center is sessile or on stalk to 6 in.; petals linear, 1–2 1/2 in. long, with pointed tips, dark purplish red or greenish to yellow. Grows in rocky soils above edges of streams, river flats, openings in forests, in spring-wet and swampy soils.

  • Rarity: Locally Common
  • Flowering Time: Early Spring
  • Life Cycle: Perennial
  • Height: 4--27 inches
  • Habitat: East-Side Forest, Moist Riverbanks
  • Found In: Great Basin, Wallowas, Columbia Basin
  • Native: Yes