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  1. Conservation assessment of sensitive moonworts (Ophioglossaceae; Botrychium subgenus Botrychium) on the Kootenai National Forest /
    By: Vanderhorst, James P. - Montana Natural Heritage Program.
    Publication info: Helena, MT :Montana Natural Heritage Program,1997.
    Contributed by: Montana State Library (archive.org)
    Subjects: Botrychium  Kootenai National Forest (Mont. and Idaho)  Montana  Ophioglossaceae  Rare plants  
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  2. The Eusporangiatae; the comparative morphology of the Ophioglossaceae and Marattiaceae,
    By: Campbell, Douglas Houghton,
    Publication info: Washington, D. C.,Carnegie Institution of Washington,1911.
    Contributed by: Cornell University Library
    Subjects: Marattiaceae  Ophioglossaceae  
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