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Keywords from Image Description:
FMIB Potamogeton crispus.jpeg Potamogeton crispus Cutting showing bur development sprouting bur shoot with spicular bur at base similar structure rooting above tip of bur bur formation at tip of branch Subject Potamogeton Tag Aquatic Botany Cite book Potamogetons in Relation to Pond Culture Moore Emmeline Washington DC Government