Caulophyllum thalictroides 2, Blue Cohosh flower

I don't run into the Blue Cohosh often, but want to say that it is fly rather than bee pollinated...but could easily be wrong. Certainly a woodland understory plant that blooms after much of the bee activity is done with. Picture and specimen from Helen Lowe Metzman. Photography Information: Canon Mark II 5D, Zerene Stacker, Stackshot Sled, 65mm Canon MP-E 1-5X macro lens, Twin Macro Flash in Styrofoam Cooler, F5.0, ISO 100, Shutter Speed 200 USGSBIML Photoshopping Technique: Note that we now have added using the burn tool at 50% opacity set to shadows to clean up the halos that bleed into the black background from "hot" color sections of the picture.