This is a native wildflower that grows along stream banks and other wet areas. On my property, it can be found during wet spring times along seasonal waterways. I’ve been hiking around looking for these flowers and have found them in two separate locations. Both areas will dry up once the weather warms enough, and are shaded by trees.
The flower bulbs were eaten by the native Americans, but only from the purple flower, the white flower bulbs are poisonous. I’ve even seen these in a nursery catalog (Territorial Seed Company, Cottage Grove, OR). Like most wildflowers, they only seem to grow where they really like the environment. Or so it seems to me.