Karl McKay Wiegand

Karl McKay Wiegand (June 2, 1873 – March 12, 1942) was an American botanist who headed the Department of Botany at Cornell University for 28 years. He was a member of the Botanical Society of America and served as its president in 1939.

The standard author abbreviation Wiegand is used to indicate this person as the author when citing a botanical name.

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