Western Monkshood/Wolfbane (Aconitum Columbianum)
Native and Cultivated
Grows 2-4 feet tall in damp shady places in upper elevation mountain areas. Has fleshy roots and stout stems. Leaves are dark green and deeply divided with multiple segments; leaves become smaller towards the top of the plant. Poisonous parts: all parts, especially roots and leaves.
Shiny, black, triangular seeds
Numerous helmet or hood-shaped, blue-purple flowers arranged on tall spikes; blooms July to August.
(Click images to enlarge.)