Senecio integerrimus

Western Groundsel

Single, stout, erect stem, thick basal leaves on petioles. Leaves lance-shaped to almost round, with matted hair when young, becoming smooth with age, entire or occasionally with shallow irregular teeth. Upper leaves alternate on stem, sessile. Flower heads numerous, tightly clustered on short hairy stalks atop stems. Eight ray flowers vary from yellow to almost white; disk flowers yellow. Grows in moist to dry soils in sagebrush-steppe, forests, alpine ridges. Var. ochroleucus has white ray flowers, cream disk, may have slightly blackened bract tips on cups. Var. exaltatus has no ray flowers, creamy disk, grows in forests.

  • Rarity: Common
  • Flowering Time: Late Spring, Early Summer
  • Life Cycle: Biennial, Perennial
  • Height: 8--30 inches
  • Habitat: Meadow, West-Side Forest, East-Side Forest, Subalpine
  • Found In: Siskiyous, Crater Lake NP, Great Basin, N Cascades NP
  • Native: Yes