dcsimg
Please read BHL's Acknowledgment of Harmful Content
Sort By:
  1. By: Gress, Ernest Milton
    Type: Article
    In: Annals of the Carnegie Museum
    Volume: 13
    Issue: 3-4
    Date: 1922-03
    Page Range: 274--332
    Publication Info: [Pittsburgh], Published by authority of the Board of Trustees of the Carnegie Institute, 1901-
  2. By: Gress, Ernest Milton
    Type: Article
    In: Rhodora
    Volume: 25
    Date: 1923
    Page Range: 12--13
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],