<a href="//commons.wikimedia.org/wiki/Callitriche_palustris" title="Callitriche palustris">Callitriche palustris</a> seeds
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</p><p>Steve Hurst @ USDA-NRCS PLANTS Database 
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If you cite PLANTS in a bibliography, please use this USDA, NRCS. 2008. The PLANTS Database (<a rel="nofollow" class="external free" href="https://plants.usda.gov">http://plants.usda.gov</a>, 7 September 2008). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
Steve Hurst @ USDA-NRCS PLANTS Database
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