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horse chestnut

(Encyclopedia)horse chestnut, common name for some members of the Hippocastanaceae, a family of trees and shrubs of the north temperate zones and of South America. The horse chestnut tree, Aesculus hippocastanum, a...

phylloxera

(Encyclopedia)phylloxera fĭlŏkˈsĭrə [key], small, sap-eating, greenish insect of the genus Phylloxera, closely related to the aphid. Phylloxeras feed on leaves and roots, and many species produce galls on deci...

Cameron, Richard

(Encyclopedia)Cameron, Richard kămˈərən [key], 1648–1680, Scottish leader of the Cameronians, an extreme group of Covenanters. In 1672, under the influence of the open-air preacher John Welch, he became a Cov...

foot-and-mouth disease

(Encyclopedia)foot-and-mouth disease or hoof-and-mouth disease, highly contagious disease almost exclusive to cattle, sheep, swine, goats, and other cloven-hoofed animals. It is caused by a virus, specifically an a...

Downing, Andrew Jackson

(Encyclopedia)Downing, Andrew Jackson, 1815–52, American horticulturist, rural architect, and landscape gardener, b. Newburgh, N.Y. With his brother Charles Downing, 1802–85, he took over the operation of the n...

pocket mouse

(Encyclopedia)pocket mouse, small jumping rodent of W North America and as far south as N South America. More closely related to the squirrel than the true mouse, the pocket mouse gets its name from the fur-lined c...

Lalemant, Jérôme

(Encyclopedia)Lalemant, Jérôme lälmäNˈ [key], 1593–1673, French Jesuit missionary in North America, brother of Charles Lalemant and uncle of Gabriel Lalemant. He was an active missionary among the Huron (16...

timothy , in botany

(Encyclopedia)timothy or herd's-grass, perennial plant (Phleum pratense) of the family Poaceae (grass family), native to Europe and W Asia and one of the most widely cultivated hay grass of North America. Adaptable...

Seaton, John Colborne, 1st Baron

(Encyclopedia)Seaton, John Colborne, 1st Baron, 1778–1863, British soldier and colonial administrator. He served in Egypt (1801) and Sicily (1806), participated (1808–14) in the Peninsular War, and helped to de...

cornflower

(Encyclopedia)cornflower, common herb (Centaurea cyanus) of the family Asteraceae (aster family). It is a garden flower in the United States but a weed in the grainfields of Europe. It is called bluebottle or bluet...