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  1. By: Pyenson, Louis
    Type: Article
    In: Journal of the New York Botanical Garden
    Volume: 47
    Issue: 557
    Date: 1946-05
    Page Range: 120--122
    Publication Info: Lancaster, Pa, Published for the Garden by the New Era Printing Co, 1900-
  2. By: Pyenson, Louis
    Type: Article
    In: Journal of the New York Botanical Garden
    Volume: 45
    Issue: 538
    Date: 1944-10
    Page Range: 240--240
    Publication Info: Lancaster, Pa, Published for the Garden by the New Era Printing Co, 1900-
  3. By: Pyenson, Louis
    Type: Article
    In: Journal of the New York Entomological Society
    Volume: 41
    Date: 1933
    Page Range: 241--252
    Publication Info: Lawrence, Kan Allen Press [etc.]