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bamboo

bamboo, plant of the family Gramineae (grass family), chiefly of warm or tropical regions, where it is sometimes an extremely important component of the vegetation. It is most abundant in the monsoon area of E Asia. Bamboos are the the largest grasses, sometimes reaching 100 ft (30 m). The stalks are round (rarely square), jointed, sometimes thorny, and hollow or solid with evergreen or deciduous leaves. Some types die after fruiting and some do not flower until they are about 30 years old. In many places bamboo is used as wood for construction work, furniture, utensils, fiber, paper, fuel, and innumerable small articles. Bamboo sprouts are eaten as a vegetable, and the grains of some species are also utilized for food. The bamboo has long been used for decorative purposes, both in gardens and in art. In the United States the native bamboo is a cane. The most common bamboo is Bambusa arundinacea. Bamboo is classified in the division Magnoliophyta, class Lilopsida, order Cyperales, family Gramineae.

See F. A. McClure, The Bamboos (1966).

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Bamboo

Bamboo

Bamboos are members of the grass family (Poaceae). Like other grasses, bamboos have jointed stems, small flowers enclosed in structures known as spikelets, a specially modified embryo within the seed, and a grainlike fruit. However, bamboos are the only major group of grasses adapted to the forest habitat, and they differ from other grasses in having highly scalloped photosynthetic cells in their leaves. Many bamboos have tall, somewhat arched stems, but others are shrubby, or slender and twining , and some resemble ferns. The largest bamboos reach 30 meters (100 feet) in height and 30 centimeters (12 inches) in diameter, while the smallest ones have delicate stems no more than 10 centimeters (4 inches) tall.

There are at least twelve hundred known species of bamboos worldwide, which occur from 46°N (Sakhalin Island, Russia) to 47°S (southern Chile), although most are tropical or warm temperate. Bamboos often grow at low elevations, but many species grow in mountain forests, and some range up to 4,300 meters (14,200 feet) elevation in equatorial highlands. Woody bamboos (tribe Bambuseae), with at least eleven hundred species, make up the bulk of bamboo diversity: these are the plants normally thought of as bamboos. The woodiness of their stems is derived entirely from primary growth, and although there are other woody grasses, the Bambuseae are the only major group of grasses characterized by woodiness. Approximately one hundred species of tropical, herbaceous, broad-leaved grasses (tribe Olyreae) are closely related to their woody cousins, and these are now also classified as bamboos. Bamboos are typically associated with Asia, but close to one-half of their diversity is native to Central and South America, and there is one species (giant cane, or switch cane) native to the southeastern United States.

Woody bamboos are ecologically important in the tropical and temperate forests where they grow. Rapid elongation of bamboo shoots, tall, hard stems, and profuse vegetative branching allow woody bamboos to compete with trees for light. Woody bamboos easily colonize forest edges and gaps by means of vegetative reproduction through their well-developed underground stems (rhizomes), whereas herbaceous bamboos are characteristic of the shady forest floor. The large biomass of bamboo stems and leaves provides an excellent habitat for a wide variety of animals, including beetles and other insects, birds, monkeys, frogs, rats, and pandas.

Woody bamboos are well known for their unusual flowering behavior, in which the members of a species grow for many years (up to eighty or more) in the vegetative condition, and then flower at the same time and die after fruiting. Other flowering behaviors are documented in bamboos, but many exhibit this periodic, gregarious type of flowering, and the effect on the forest is dramatic when it occurs. Large areas of bamboo plants die back, providing openings for recolonization by the forest while the bamboo seeds sprout and start the next generation. How bamboo plants count the passage of time, or what triggers the gregarious flowering, is unknown.

In Asia, where a bamboo culture has existed for several thousand years, bamboos are a symbol of flexible strength, and they are an integral part of daily life. Young, tender bamboo shoots are a tasty vegetable, whereas the mature stems are used in construction, scaffolding, fencing, and basketry or for paper pulp. Mature stems are also fashioned into utensils, water pipes, musical instruments, and a multitude of other items. Bamboo is an important theme in Asian artwork, and bamboos frequently are used as a material for artwork. Bamboos are also widely planted as ornamentals in many parts of the world. The utility of bamboo is exploited wherever it is cultivated or grows naturally, and there is increasing recognition of the potential of bamboo as a renewable resource, especially for reforestation and housing.

see also Economic Importance of Plants; Grasses; Monocots.

Lynn G. Clark

Bibliography

Conover, A. "A New World Comes to Life, Discovered in a Stalk of Bamboo." Smithsonian Magazine (October 1994): 120-129.

Farrelly, D. The Book of Bamboo. San Francisco: Sierra Club Books, 1984.

Judziewicz, E. J., L. G. Clark, X. Londoño, and M. J. Stern. American Bamboos. Washington, DC: Smithsonian Institution Press, 1999.

Recht, C., and M. F. Wetterwald. Bamboos. Portland, OR: Timber Press, 1992.

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bamboo

bamboo Tall, tree-like grass native to tropical and subtropical regions. The hollow, woody stems grow in branching clusters from a thick rhizome and the leaves are stalked blades. It is used in house construction and for household implements. Some bamboo shoots are eaten. The pulp and fibre may form a basis for paper production. Height: to 40m (131ft). There are 1000 species. Family Poaceae/Gramineae; genus Bambusa.

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bamboo

bam·boo / ˌbamˈboō/ • n. a giant woody grass (Bambusa and other genera), that grows chiefly in the tropics, where it is widely cultivated. ∎  the hollow jointed stem of this plant, used as a cane or to make furniture and implements.

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bamboo

bamboo XVI (bambus, -os). — Du. bamboes — (with unexpl. -s) Pg. bambu, of Dravidian orig. Bamboo was deduced from bambus, etc., taken as pl.

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bamboo

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