United States National Herbarium

The United States National Herbarium is a collection of five million preserved plant specimens housed in the Department of Botany at the National Museum of Natural History, which is part of the Smithsonian Institution. It represents about 8% of the plant collection resources of the United States and is one of the ten largest herbaria in the world.

The herbarium was founded in 1848, when the first collections were accessioned from the United States Exploring Expedition, when botanists pressed approximately 50,000 specimens, representing 10,000 species of plants. The ''Index Herbariorum'' code assigned to this herbarium is US and this abbreviation is used when citing housed specimens. Provided by Wikipedia
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    Studies of Mexican and Central American plants. by Rose, J. N. (Joseph Nelson), 1862-1928

    Published 1900
    Government Document Book
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    New or noteworthy plants from Colombia and Central America / by Pittier, Henri, 1857-1950

    Published 1909
    Government Document Book
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    Studies of South American plants, XII / by Smith, Albert C. (Albert Charles), 1906-1999

    Published 1950
    Government Document Book
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    The American species of Ormosia (Leguminosae) / by Rudd, Velva E.

    Published 1965
    Government Document Book
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    Studies in Cactaceae. by Britton, Nathaniel Lord, 1859-1934

    Published 1913
    Government Document Book
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    Studies of tropical American ferns. by Maxon, William R. (William Ralph), 1877-1948

    Published 1912
    Government Document Book
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    Flora of Utah and Nevada / by Tidestrom, Ivar, 1865-

    Published 1925
    Search for the full-text version of this title in HathiTrust
    Government Document Book
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