Asa Gray summary

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Asa Gray, (born Nov. 18, 1810, Sauquoit, N.Y., U.S.—died Jan. 30, 1888, Cambridge, Mass.), U.S. botanist. He received a medical degree from Fairfield Medical School, where he spent his spare time studying plant specimens. He collaborated with John Torrey (1796–1873) on Flora of North America (1838–43) and in 1842 joined the faculty at Harvard University, where he would teach until 1873. His donation of his thousands of books and plant specimens established Harvard’s botany department. Gray was largely responsible for the unification of the taxonomic knowledge of the North American flora; his most widely used book, commonly called Gray’s Manual (1848), remains a standard work. He was the chief early American supporter of the theories of Charles Darwin.

taxonomy Summary

Taxonomy, in a broad sense the science of classification, but more strictly the classification of living and extinct organisms—i.e., biological classification. The term is derived from the Greek taxis (“arrangement”) and nomos (“law”). Taxonomy is, therefore, the methodology and principles of

plant Summary

Plant, (kingdom Plantae), any multicellular eukaryotic life-form characterized by (1) photosynthetic nutrition (a characteristic possessed by all plants except some parasitic plants and underground orchids), in which chemical energy is produced from water, minerals, and carbon dioxide with the aid

North America Summary

North America, third largest of the world’s continents, lying for the most part between the Arctic Circle and the Tropic of Cancer. It extends for more than 5,000 miles (8,000 km) to within 500 miles (800 km) of both the North Pole and the Equator and has an east-west extent of 5,000 miles. It

essay Summary

Essay, an analytic, interpretative, or critical literary composition usually much shorter and less systematic and formal than a dissertation or thesis and usually dealing with its subject from a limited and often personal point of view. Some early treatises—such as those of Cicero on the