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George Ledyard Stebbins Jr. (January 6, 1906 – January 19, 2000) was an American botanist and geneticist who is widely regarded as one of the leading evolutionary biologists of the 20th century. [1 ] Stebbins received his Ph.D.
William Francis Ganong FRSC (19 February 1864 – 7 September 1941) was a Canadian botanist, historian and cartographer. His botany career was spent mainly as a professor at Smith College in Northampton, Massachusetts.