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  1. The genus Isoëtes in North America /by George Engelmann.
    By: Engelmann, George,
    Publication info: S.l. :s.n.,1882
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
    Subjects: Isoetaceae  Isoetes  North America  Plants  
    BHL Collections: Engelmann Herbarium
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