Arnica lanceolata ssp. prima
Asteraceae
Streambank Arnica
Erect, single, tall stem with gland-tipped hairs on upper portion. Leaves lance-shaped to oval, 1 1/2–4 in. long, toothed, clasping stem in opposite pairs. Smaller lower leaves often drop before flowering. Flower heads pale yellow throughout; 8–14 petal-like ray flowers toothed at tips. Grows in moist open woods, along streambanks, at low to high elevations.
- Rarity: Locally Common
- Flowering Time: Mid Summer
- Flower Form: Senecio Tribe
- Life Cycle: Perennial
- Height: 12–30 inches
- Habitat: East-side Forest, Meadow, West-side Forest
- Found In: Crater Lake NP, Mt. Rainier NP, N Cascades NP, Olympic NP, Wallowas, West Gorge
- Native: Yes
- Also Known As: Clasping Arnica
- Latin Synonyms: Arnica amplexicaulis
