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Yellow starthistle, Centaurea solstitialis, seeds.

Seeds are longer than wide. Two are dark with no bristles at one end and one is light tan with a tuft of white bristles at one end. A 1 mm bar show the seeds to be about 1 mm wide and 2 mm long. The bristly tuft is about 4 mm long a spreads from the seed to about 6 mm wide. Copyright information is at the bottom (Copyright 2007 The Regents of the University of California. All rights reserved.). Credit: James A. O'Brien, University of California
Credit: James A. O'Brien, University of California
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