Actaea racemosa, Black Cohosh, Howard County, MD

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Detailed Description

Black Cohosh, Actaea racemosa. An interesting flower of midsummer in forest openings. Seems to attract the odd bumble bee and Augochlora pura that linger in the shade. Collected and photographed by 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.


Image Dimensions: 5760 x 3840

Date Taken: