Willem Kolvoort / European bur-reed (Sparganium emersum) in De Weerribben-Wieden National Park National Park, Holland. August.
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Willem Kolvoort / European bur-reed (Sparganium emersum) in flower, central Holland. July.
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Willem Kolvoort / European bur-reed (Sparganium emersum) in flower, central Holland. July.
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Will Watson / Eutrophic ditch with bank erosion caused by cattle, with Spirogyra and Enteromorpha algae and floating leaves of Unbranched bur-reed (Sparganium erersum), Herefordshire Lowlands, England, UK. June, 20...