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By: Alvord, Benjamin,Edition:Publication info:Volume: Benjamin Alvord to Engelmann, 1844-1882Series:Holding Institution: Missouri Botanical Garden, Peter H. Raven LibrarySubjects: 1809-1884 1813-1884 Alvord, Benjamin, Compositae Correspondence Engelmann, George, Lactuca Letters Silphium (Genus) Silphium laciniatumBHL Collections: Engelmann Papers, Missouri Botanical Garden