Broad-leaf Waterleaf

I identified a new plant on my bike ride on Saturday (see Summer Re-runs).  Included for your delectation are two shots of the redundantly named Broad-leaf waterleaf (Hydrophyllum canadense).

The first shot shows the leaves, which look very much like those of the maple tree.

This second shot is a closeup of the blooms, which are just opening. You can better see their feathery appearance.

It's a native plant, and you can see its distribution map at the US Wildflower site.