False Solomon's Seal (Smilacina racemosa)
You can more readily spot False Solomon's Seal by the leaves than by the flowers, because the latter are tiny and the former are enormous - approaching a foot in length, big enough to foil your macro lens. They're also less evanescent and more trustworthy, retaining their basic leafish nature while the flowers are transforming from buds to blooms to berries and then busying themselves with poisoning people.
This Photo: Along the Lewis Creek trail, mid June