WHATISIT? (read below ans. to isbiJG to find out)

What is it? Dunno. It rather resembles what our locals call Goat's Beard but it's not exactly the same. I could take the time to Key it out.....but time is a problem right now.
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Shot was made at Road America between races....photogs have to amuse themselves in down times, right? And there I was without my Dichotomous Key.....Peterson's A FIELD GUIDE TO NORTH AMERICAN WILDFLOWERS.
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Best in Large.