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  1. By: Faxon, Charles Edward,
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    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  
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
  2. By: Manning, Warren H. (Warren Henry), - Fernald, Merritt Lyndon, - Robinson, Benjamin Lincoln, - Massachusetts. Metropolitan Park Commission. - Olmsted, Olmsted, and Eliot.
    Holding Institution: Harvard University Botany Libraries
    Subjects: (Warren Henry),  1860-1938  1864-1935  1873-1950  Botanists  Correspondence  Fernald, Merritt Lyndon,  Manning, Warren H  Robinson, Benjamin Lincoln,  
    BHL Collections: Archives from the Boston Metropolitan Park Flora | Harvard University Herbarium, Botany Libraries