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ageratum

(Encyclopedia)ageratum ăjˌərāˈtəm, əjĕrˈə– [key] [Gr.,=unaging], any plant of the genus Ageratum, tropical American annuals of the family Asteraceae (aster family). The commonly cultivated species is th...

pickerelweed

(Encyclopedia)pickerelweed, common name for the Pontederiaceae, a family of chiefly tropical perennial aquatic herbs found in freshwater. The pickerelweeds (genus Pontederia) range north into temperate regions, inc...

Wentworth, William Charles

(Encyclopedia)Wentworth, William Charles, 1793?–1872, Australian statesman. His exploration (1813) of the Blue Mts. in Australia revealed vast pasturelands in the western part of the continent. In 1816 he went to...

Capri

(Encyclopedia)Capri käˈprē [key], Lat. Capreae, island (1987 est. pop. 7,750), 4 sq mi (10.4 sq km), Campania, S Italy, in the Bay of Naples off the tip of the Sorrento Peninsula. It is an international tourist ...

blackthorn

(Encyclopedia)blackthorn or sloe, low, spreading, thorny bush or small tree (Prunus spinosa) of the plum genus of the family Rosaceae (rose family), having black bark, white flowers, and deep blue fruits, usually r...

Mitchell, Joni

(Encyclopedia)Mitchell, Joni, 1943–, Canadian-American songwriter, singer, guitarist, poet, and painter, b. MacLeod (now Fort Macleod), Alta., as Roberta Joan Ander...

Gram's stain

(Encyclopedia)Gram's stain, laboratory staining technique that distinguishes between two groups of bacteria by the identification of differences in the structure of their cell walls. The Gram stain, named after its...

Ramakrishnan, Venkatraman

(Encyclopedia)Ramakrishnan, Venkatraman, 1952–, American molecular biologist, b. India, Ph.D. Ohio Univ., 1976. He was a researcher at Oak Ridge National Laboratory (1982–83) and at Brookhaven National Laborato...

Kuznetsk Basin

(Encyclopedia)Kuznetsk Basin, coal basin, c.10,000 sq mi (25,900 sq km), W Siberian Russia, between the Kuznetsk Alatau and the Salair Ridge. Its abbreviated name is Kuzbas. With extensive coal deposits, particular...

Cumberland, cities, United States

(Encyclopedia)Cumberland. 1 City (2020 pop. 19,076), seat of Allegany co., NW Md., on the North Branch of the Potomac; settled 1750, inc. 1815. It is an important ...