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  1. By: Stewart, R. E. - Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
    Publication info: Portland Or, Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, [1976]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Bracken fern  Control  Diseases and pests  Herbicides  Oregon, Western  Polystichum  Testing  Trees  Washington (State), Western  
  2. By: Wagner, David H.,
    Publication info: [Washington], American Fern Society, 1979
    Holding Institution: Smithsonian Libraries and Archives
    Subjects: Birtish Columbia  Classification  Ferns  Polystichum  West (U.S.)  
    BHL Collections: Expanding Access to Biodiversity Literature
  1. By: Lorence, David - Wagner, Warren Lambert - Wood, Kenneth Richard, - Smith, Alan R.,
    Type: Article
    In: PhytoKeys
    Volume: 4
    Date: 2011
    Page Range: 5-51
    Publication Info: Pensoft Publishers 2011
    Subjects: Blechnum  Cyclosorus  Dryopteris  French Polynesia  Marquesas Islands  Polystichum  pteridophytes  Pteris  Thelypteris  
  2. By: Handfield, Louis - Handfield, Daniel
    Type: Article
    In: ZooKeys
    Volume: 149
    Date: 2011
    Page Range: 5-15
    Publication Info: Pensoft Publishers 2011
    Subjects: Christmas fern  Crambidae  Dryopteridaceae  eastern North America  Herpetogramma  Polystichum  taxonomy  
  3. By: McKeown, Meghan - Sundue, Michael, - Barrington, David S. (David Stanley)
    Type: Article
    In: PhytoKeys
    Volume: 14
    Date: 2012
    Page Range: 43-56
    Publication Info: Pensoft Publishers 2012
    Subjects: Australia  Biogeography  Morphology  Polystichum  Rumohra