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  1. By: Irvine, F. R.
    Type: Article
    In: Journal of the New York Botanical Garden
    Volume: 49
    Issue: 586
    Date: 1948-10
    Page Range: 225--236
    Publication Info: Lancaster, Pa, Published for the Garden by the New Era Printing Co, 1900-
  2. By: Irvine, F. R.
    Type: Article
    In: Journal of the New York Botanical Garden
    Volume: 49
    Issue: 587
    Date: 1948-11
    Page Range: 254--267
    Publication Info: Lancaster, Pa, Published for the Garden by the New Era Printing Co, 1900-