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Cyrus Guernsey Pringle (1838-1911) was an American botanist who spent his career cataloguing the plants of North America, especially in Mexico. He considered to be among the top five botanists for sheer quantity of new species discovered - approximately 1,200 new species, 100 new varieties, and 29 new genera.
In 1880, he was named as botanical collector for the American Museum of Natural History. As an agent for the U.S. Census Bureau, he explored the forests of New York, Pennsylvania, West Virginia, and New England to collect data for the 1884 Census Office publication titled, Report on the Forests of North America.