Polygonum cespitosum var. longisetum, upper marlboro

10X shot of seed/flower head of Tufted Knotweed or Oriental Lady's Thumb, Polygonum cespitosum. Lovely form for this very weedy plant. Pulled from my backyard in Upper Marlboro, Maryland. Photography Information: Canon Mark II 5D, Zerene Stacker, Stackshot Sled, 200mm Pentax-m with Nikon 10X infinity microscope objective lens mounted on front , Twin Macro Flash in Styrofoam Cooler, F5.6, 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.