Rayless Arnica
Arnica parryi

Family: Sunflower (Asteraceae)
AKA: Parry's Arnica, Nodding Arnica
Photo taken on: July 24, 2005
Location: Lily Lake Trail, GV, CO
Life Zones: Montane to subalpine
Habitat: Moist meadows

Grows to 20" in patches with a hairy stem and mostly basal leaves. The flower heads have no petals, only disk flowers.

Flora of North America reference.