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American black nightshade, Solanum americanum, seeds.

A collection of 23 small seeds, varying in shades from light yellow to dark brown, arranged on a gray background. A 1 millimeter scale indicates size and shows the seeds are 1 millimeter. Copyright information is at the bottom (Copyright 2007 The Regents of the University of California. All rights reserved.). Credit: Jack Kelly Clark, UC IPM — Credit: Jack Kelly Clark, UC IPM

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