I probably would have walked right by if it hadn’t been for the bees.  They were buzzing and making quite a fuss around this flower.

  
Tall White Lettuce

Once I looked it up, I realized I had “learned” it before.  I guess the name didn’t stick because I had to learn it again.  It was hard to photograph because the slightest breeze would send the blooms swaying.  I may have to go back on a still morning with a tripod and try again.  This plant has extremely variable leaves – some heart-shaped, others deeply lobed.  Even though it is called “lettuce” I didn’t find it in the Peterson Guide to wild edibles…