Monkshood
Aconitum columbianum

Family: Buttercup (Ranunculaceae)
AKA: Wolfbane, Aconite, Columbian Monkshood,
 Western Monkshood
Photo taken on: July 25, 2004
Location: Lily Lake, GV, CO
Life Zones: Montane to subalpine
Habitat: Moist meadows, open woods

Grows to 6ft, often amongst willows. Leaves are broad and deeply lobed, maple-like. Flowers have a distinctive shape and are usually purple but can be white. Compare with Subalpine Larkspur. This plant is poisonous.

Flora of North America reference.