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  1. By: Pence, Valerie C
    Type: Article
    In: American fern journal
    Volume: 90
    Date: 2000
    Page Range: 16--23
    Publication Info: [Washington, etc.] American Fern Society
  2. By: Pence, Valerie C
    Type: Article
    In: American fern journal
    Volume: 91
    Date: 2001
    Page Range: 37--40
    Publication Info: [Washington, etc.] American Fern Society
  3. By: Pence, Valerie C - Winget, G. Douglas - Lindsey, Kristine M - Plair, Bernadette L - Charls, Susan M.
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 56
    Date: 2009
    Page Range: 221--228
    Publication Info: Berkeley, California Botanical Society,
  4. By: Pence, Valerie C - Plair, Bernadette L - Charls, Susan M. - Clark, John R. - Taylor, David D. (David Dwight),
    Type: Article
    In: Journal of the Kentucky Academy of Science
    Volume: 72
    Issue: 2
    Date: 2011-09
    Page Range: 91--99
    Publication Info: Lexington, KY The Academy 1998-
  5. By: Pence, Valerie C
    Type: Article
    In: American fern journal
    Volume: 90
    Date: 2000
    Page Range: 119--126
    Publication Info: [Washington, etc.] American Fern Society