Native plant, but not in South Texas

Hello, everyone.

When we were in Illinois, I was struck by this plant we saw at Pere Marquette State Park.

This is a mayapple.  Actually, either a pair or the start of a clump! This was along the walking path on a hill.

It's possible that mayapples grow in East Texas, but down here there is neither enough water nor, I suspect, enough winter chilling.