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Circium discolor, Field Thistle, Howard County, Md, HLM

Detailed Description

One of the best pollinator plants ever. This is Circium discolor (field or pasture thistle). Its a native thistle, does not invade fields, is not perennial and has a whole suite of bees that depend on it and its relatives to provide pollen for their young. Please plant some, you will be thrilled with all the big dark winged bumble bees that show up too. Photo by Helen Lowe Metzman from Howard County Maryland. 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.


Public Domain.