Smithsonian National Museum of Natural History  
Lewis and Clark as Naturalists
<EM>Acer macrophyllum </EM>Pursh - collected by Thos. J. Howell, Oregon, 1880 (flowers & fruits)

collected by Thos. J. Howell, Oregon, 1880 (flowers & fruits)
(from the United States National Herbarium US-136676)
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