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Subjects: 1809-1884; 1846-1918; 1864-1935; Alismataceae; Botanical specimens; Correspondence; Ecology; Engelmann, George,; Faxon, Charles Edward,; Habitat; Ipswich River; Letters; Massachusetts; Najas; Plants; Potamogeton natans; Potamogeton spirillus; Potamogetonaceae; Robinson, Benjamin Lincoln,; Sagittaria; Seasonal variations; Size; Water requirements</div>
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Faxon, Charles Edward,</div>
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