Ralph Erskine Cleland

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Ralph Erskine Cleland, 1947

Ralph Erskine Cleland (20 October 1892 – 11 June 1971) was an American botanist. In 1947, he was the President of the Botanical Society of America. He was also a professor at the Department of Botany at Indiana University. Cleland's most seminal field of research concerned the genetics of the plant genus Oenothera.[1][2] He discovered the structures of linked rings of meiotic chromosomes (not to be confused with ring chromosomes)[3] that, by their interference with functions such as chromosomal crossover explained the unusual genetics and reproduction of plants in the genus Oenothera.[4][5]


  1. ^ "Ralph Erskine Cleland (1892-1971)". Smithsonian Institution Archives. Retrieved 25 May 2012. 
  2. ^ Harte, Cornelia. Oenothera: Contributions of a Plant to Biology. Springer 2012 ISBN 978-3642842887
  3. ^ Dunn, E.W. Dobzhansky, Th. Sinnott, L.C. Principles of Genetics. Publisher: McGraw-Hill 1957 ASIN: B0000CK0MJ
  4. ^ Steiner, Erich (1982). "Ralph Erskine Cleland". Biographical Memoirs. 53. Retrieved 25 May 2012. 
  5. ^ Cleland, R. E. Oenothera: Cytogenetics and Evolution. Academic Press 1972. ISBN 978-0121764500
  6. ^ IPNI.  R.E.Cleland. 

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