Términos

Species of ornamental and shade tree, often 30 meters (100 feet) in height, having graceful, drooping branches, many-lobed dark green leaves, and large, distinctive acorns about 5 cm (1.7 inches) long. The ash-gray to light-brown bark, slightly orange-tinted, is fissured in irregular cubes.

Species of medium-sized oak tree native to lowland wetlands in the southeastern United States, from Delaware and southern Illinois south to northern Florida and southeast Texas. The common name refers to the acorn almost completely enclosed by the cup or its scale. The Latin name comes from the shape of the leaves, which resemble a lyre.

Species of white oak timber tree native to North America, found in eastern and midwestern United States and south-central Canada. It is also called "mossy-cup oak" for its heavily fringed acorn cups. It is a popular ornamental and shade tree in urban areas because of its resistance to insect and fungal attack, drought, and air pollution. Previously common in oak savannas and prairies, the tree is well adapted to fire with its corky, fire-resistant bark.

Species of oak tree native to the southern Mediterranean, Morocco, and Asia Minor. The tannin extracted from the large acorn cups was used in the 18th century for tanning leather and for dyeing. The acorns, themselves called "valonia," are edible.

Species of valuable North American bottomland timber tree of the Atlantic and Gulf coastal plains and Mississippi Valley region, growing 24-36 meters in height, with branches rising at narrow angles from a columnar trunk to a round, compact head. It has silver-white, red-tinged bark and bright green, glossy leaves, velvety and whitish beneath, usually 20 cm in length and turning red in autumn. Swamp chestnut oak is often called "cow oak," because the acorns are eaten by cattle, or "basket oak" from local use of the wood strips for basket material. It was formerly considered a variety of Q. prinus ("rock chestnut oak" or simply "chestnut oak"). Q. michauxii is typically more massive than Q. prinus. A quick way to distinguish the two species is by habitat; if the tree grows on a ridge, it is probably Q. prinus; if it grows in wet bottomlands, it is probably Q. michauxii.

Species of spreading oak tree that is native to North American, in the greater Midwest, ranging downward to the deep South and over into the eastern edge of the Great Plains of the U.S. When in the open, it grows to 60 feet in height by 80 feet in width, often with wide-spreading lower branches of great diameter. Chinquapin oak prefers moist, well-drained, deep, rich, alkaline soils, but is often found near the summit of hills or uplands in dry soils that may be rich, clay, sandy, or rocky. It also tolerates neutral to acidic soils. It thrives in full sun to partial sun (but is shade tolerant in youth).

Species of tall, pyramidal tree native primarily to bottomlands and moist uplands of eastern North America, but found as far west as Oklahoma and Ontario, Canada. It is distinguished by having clusters of short, spiky twigs and leaves with bristle-tipped lobes, thus accounting for the common name "pin oak."

Species of large deciduous oak tree, growing to 20-40 meters in height; native to most of Europe and Anatolia . It is similar to Quercus robur (pedunculate oak), with which it overlaps extensively in range.

Species of small tree or shrub that forms dense thickets; it is a useful cover plant on dry, rocky ridges. It resembles chestnut oak (Quercus prinus); however, it is more closely related to chinkapin oak (Quercus muhlenbergii).

Refers specifically to the wood of the species Quercus prinus (also called Q. montana), used in making furniture. The term "chestnut oak" is also used informally as a general term referring to any of several species of oaks having leaves similar to chestnut trees.

Species of large oak tree native to most of Europe, Anatolia, the Caucasus, and parts of North Africa; growing 25-40 meters in height, and having a bark that is grayish brown in color and having deep fissures with aging. The tree is valued for brown wood with a coarse but straight grain. The bark is used for tanning and dyeing.

Species of oak native to northeastern United States and southeast Canada, but found north in Nova Scotia, south to Georgia, and west to the Great Lakes. It is used for timber but often cultivated as an ornamental; it grows rapidly into a round-headed, wide-spreading tree about 25 m (80 feet) in height, with leaves that turn red-orange in autumn and persist into winter.

Species of large oak native to the Atlantic Coastal Plain of the U.S., in the Mississippi and Ohio river valleys. It is also found in Michigan, Pennsylvania, Maryland, and Ontario, Canada. It is used for shade, for timber, and the acorns and leaves are food for various birds and mammals.

Hard, close-grained, durable wood of the species Quercus stellata, native to sandy soils of the central and southern United States. It is tough and rot-resistant, used for fence posts, rough construction, and as a fuel for barbequing meat.

Species of medium sized evergreen oak native to southwest Europe and northwest Africa, cultivated in Spain, Portugal, France, Italy, Morocco, Tunisia, and Algeria. The tree has a thick, insulating bark that helps it to recover quickly after forest fire; branches, having been protected from the fire by cork, quickly resprout and recompose the tree canopy, while other trees regrow from shoots or seeds. The lightweight, buoyant outer bark of the cork oak is used for stopping bottles, flooring, and many other purposes commercially. No trees are cut down during the harvesting process: the outer bark is stripped about every 10 years, and a new layer of cork grows.

Species of medium-sized, fast-growing oak tree distributed on rocky hillsides and sandy ridges throughout the eastern and Midwestern United States, having a black or dark brown bark. While the tree is occasionally used for lumber, its most important commercial product is a yellow dye obtained from the bark.

Species of evergreen tree native to the southeastern and gulf area of the United States into Mexico, and Cuba, having a coarse, reddish brown bark and reaching 50 feet in height. Valued for its hard, durable wood, formerly used in shipbuilding; today most often used for shade trees. It is readily hybridized, and thus confusion regarding varieties and certain common names has arisen.

Uno de los colorantes orgánicos más antiguos, hechos cuando el ácido quermésico se extrae de los cuerpos secos de larvas de insectos femeninos. Tinte quermes fue utilizado desde la antigüedad, y también contiene 18-32% de tanino y se utiliza para la fabricación de un cuero de color oscuro.

Colores rojos variables que se asemejan al color del colorante quermes, derivado de insectos hembra Kermes.

Mezcla de hidrocarburos líquidos obtenidos del petróleo en forma de un líquido aceitoso de color amarillo pálido a incoloro inflamable utilizado como combustible para lámparas, calentadores y motores a reacción, y como disolvente.