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Smooth crabgrass, Digitaria ischaemum, spikelets and florets.

A patch of grass with thin, long green blades growing in sandy soil. Surrounding plants and dry leaves indicate an arid environment. 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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