Background
Rydberg, Per Axel was born on July 6, 1860 in Odh, Sweden. Son of Adolf Fredrik and Elfrida (Otterstrom) Rydberg.
Rydberg, Per Axel was born on July 6, 1860 in Odh, Sweden. Son of Adolf Fredrik and Elfrida (Otterstrom) Rydberg.
Graduate Royal Gymnasium, Skara, Sweden, 1881. Bachelor of Science, University of Nebraska, 1891, Master of Arts, 1895. Doctor of Philosophy, Columbia University, 1898.
Professor natural sciences and mathematics, Luther Academy, Wahoo, Nebraska, 1884-1890, 1891-1893. At Upsala Institute, Brooklyn, 1895-1896 and 1897-1898. Upsala College, New Orange, New Jersey, 1898-1899.
Fellow in botany, Columbia, 1896-1897.
Assistant Botanical Laboratory, University of Nebraska, 1894-1895. Field agent department agriculture, divisions of botany and agrostology, summers of 1891-1896.
Curator New York Botanic Garden, Bronx Park, since 1899. Author of monographs on Potentilleæ, Physalis, Saxifragaceæ, Rosaceæ, Carduaceæ and Fabaceæ.
Catalogue of the Flora of Montana and the Yellowstone Park, 1900.
Flora of Colorado, 1906. Flora of the Rocky Mountains and Adjacent Plains, 1917. Key to the Rocky Mountain Flora, 1919.
Home: New York, New New York
Married Alfrida Amanda Rydberg, November 11, 1903. Children: Arthur Alfred, Elsa Margreta (deceased), Lilly Irene, Linnea Astrid.