Alfred Rehder

Alfred Rehder ( born September 4, 1863 in Waldenburg, Saxony, † July 25, 1949 in Jamaica Plain, Massachusetts ) was a German - American gardener and botanist specializing in Dendrology. Rehder was probably the most important dendrologist his time. Its official botanical author abbreviation is " Rehder ".


Rehders father was director Park in Waldenburg. The professional gardener Alfred Rehder learned from his father. He attended high school in Zwickau.

At the Botanical Garden in Berlin began his professional career in 1884. Here he deepened his botanical knowledge by attending lectures among others, Paul Friedrich August Ascherson and August Wilhelm Eichler. In 1886 he went to Frankfurt am Main, half a year later at the park of Muskau. There he met his future wife, the daughter of the Park Director know. A year later, in 1888, he moved to the Botanical Garden Darmstadt.

Again, a year later he moved to the Botanical Garden of Göttingen, where he was head gardener in 1895 from 1 April 1889 to 30 June. During his time in Göttingen, he was independent employees of several horticultural journals. In addition, he was also at the application of the Professor Albert Peter (1853-1937) in 1890 initiated alpine botanical garden plants involved on the Brocken in the Harz Mountains. 1895 Rehder was in Erfurt second editor at one of the leading journals, Moller German gardener newspaper. The editors sent him in 1898 for half a year in the USA, where he was to study trees and the orchards and vineyards in the northeastern U.S. states. Charles Sprague Sargent, where he learned, the director of Harvard University affiliated Arnold Arboretum, located in Jamaica Plain, Massachusetts, know.

Rehder took the U.S. citizenship, but never broke his connections to Germany from.

In 1913, Harvard University awarded him the title of "Master of Arts". He was from 1918 to 1940 curator of the Arnold Arboretum. In 1934 he was appointed " Associate Professor of Dendrology " at Harvard University.

Rehder was the founder of the Journal of the Arnold Arboretum, which was published as a quarterly journal from 1919 to 1990. He worked mainly with the systematization of data collected by Ernest Henry Wilson in China plants. Rehder also created the first system of isothermal zones for the United States, which brought the geographical Wintertemparaturen with the hardiness of plants in connection. The plant genera Rehdera Moldenke, Rehderodendron Hu and Rehderophoenix Burrett have been named after him.


The work Rehders comprises about 1000 publications. Rehders most famous work is the 1927 First published Manual of Cultivated Trees and Shrubs, hardy in North America, so to speak, the " Bible of dendrologists " advanced. His most comprehensive single work, however, is the 1949 published Bibliography of Cultivated Trees and Shrubs Hardy in North America, a real mammoth work which compiled Rehder on about 150,000 individual data being based in decades of work. Here is a small selection of his works:

  • The Bradley bibliography, a guide to the literature of the woody plants of the world. 1911-1918 doi: 10.5962/bhl.title.50453
  • With Ernest Henry Wilson: A monograph of azaleas. Rhododendron subgenus Anthodendron. University Press, Cambridge, 1921, doi: 10.5962/bhl.title.25818, doi: 10.5962/bhl.title.51369, doi: 10.5962/bhl.title.55595
  • Manual of Cultivated Trees and Shrubs, hardy in North America. 1927; revised second edition 1940.
  • Bibliography of Cultivated Trees and Shrubs Hardy in North America. 1949 doi: 10.5962/bhl.title.60035
  • Plantae Wilsonianae, along with Ernest Henry Wilson