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Author:Per Axel Rydberg

Per Axel Rydberg
Swedish-born, American botanist who was the first curator of the New York Botanical Garden Herbarium.


  • 1895: Flora Of The Sand Hills Of Nebraska
  • 1897: A Report Upon the Grasses and Forage Plants of the Rocky Mountain Region with C. L. Shear
  • 1898: A Monograph of the North American Potentilleae
  • 1900: Catalogue of the Flora of Montana and the Yellowstone National Park
  • 1906: Flora of Colorado
  • 1917: Flora of the Rocky Mountains and Adjacent Plains
  • 1918: Monograph on Rosa
  • 1923: Flora of the Black Hills of South Dakota
  • 1923: Memories from the Department of Botany of Columbia University
  • 1932: Flora of the Prairies and Plains of Central North America with M. A. Howe


Some or all works by this author are in the public domain in the United States because they were published before January 1, 1924.

The author died in 1931, so works by this author are also in the public domain in countries and areas where the copyright term is the author's life plus 80 years or less. Works by this author may also be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.