More to explore:
White Trout Lily
Turk's Cap Lily, eastern N.A.
Jack in the Pulpit by Ross Blakey "Jack in the pupit, preached in the woods, taught all the flowers how to be good. Columbine, lily, rose and the rest, all came to hear him, dressed in their best."
This is your mystery plant. Jack in the pulpit. The
Great understory plant!