Asteraceae
Senecio triangularis

Arrowleaf Groundsel

Cluster of very tall stems with evenly spaced leaves, same size to top. Arrow-shaped leaves 2–8 in. long, on short petioles or sessile, deeply toothed. Few to numerous yellow flower heads in small cluster at top. Head includes 8 ray flowers toothed at tips, 40 disk flowers in center. Grows in wet meadows, conifer forests, streambanks, at mid to alpine elevations.

  • Rarity: Locally Common
  • Flowering Time: All Summer
  • Life Cycle: Perennial
  • Height: 1--5 feet
  • Habitat: Meadow, West-Side Forest, East-Side Forest, Bog/Fen/Wetland, Subalpine, Moist Riverbanks
  • Found In: Olympic NP, Mt. Rainier NP, N Cascades NP, Crater Lake NP, Wallowas, Steens, West Gorge
  • Native: Yes