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conifer |
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conifer (kŏn`ĭfûr) [Lat.,=cone-bearing], tree or shrub of the order Coniferales, e.g., the pine pine, common name for members of the Pinaceae, a family of resinous woody trees with needlelike, usually evergreen leaves. The Pinaceae reproduce by means of cones (see cone) rather than flowers and many have winged seeds, suitable for wind distribution.
..... Click the link for more information. , monkey-puzzle tree monkey-puzzle tree, evergreen tree (Araucaria araucana) native to Chile and widely cultivated elsewhere as an ornamental. The symmetrical branches have an unusual angularity and are completely covered by the stiff, overlapping leaves. ..... Click the link for more information. , cypress cypress, common name for members of the Cupressaceae, a widely distributed family of coniferous shrubs and trees, several yielding valuable timber. The major genera are Juniperus (juniper), Thuja (arborvitae), and Cupressus (the true cypresses). ..... Click the link for more information. , and sequoia sequoia , name for the redwood (Sequoia sempervirens) and for the big tree, or giant sequoia (Sequoiadendron giganteum), both huge, coniferous evergreen trees of the bald cypress family, and for extinct related species. ..... Click the link for more information. . Most conifers bear cones cone or strobilus , in botany, reproductive organ of the gymnosperms (the conifers, cycads, and ginkgoes). Like the flower in the angiosperms (flowering plants), the cone is actually a highly modified branch; unlike the flower, it does not have ..... Click the link for more information. and most are evergreens, though a few, such as the larch larch, any tree of the genus Larix, conifers of the family Pinaceae (pine family), which are unusual in that they are not evergreen. The various species are widely distributed in the Northern Hemisphere. ..... Click the link for more information. , are deciduous. Conifers are widely distributed over the world but are mostly found in the highlands of temperate regions. The conifers, the ginkgoes ginkgo or maidenhair tree, tall, slender, picturesque deciduous tree (Ginkgo biloba) with fan-shaped leaves. The ginkgo is native to E China, where it was revered by Buddhist monks and planted near temples. ..... Click the link for more information. , and the cycads cycad , any plant of the order Cycadales, tropical and subtropical palmlike evergreens. The cycads, ginkgoes, and conifers comprise the three major orders of gymnosperms, or cone-bearing plants (see cone and plant). The cycads first appeared in the Permian period. ..... Click the link for more information. comprise the three most important groups of gymnosperms, i.e., plants without true flowers. Conifers are classified in the division Pinophyta Pinophyta , division of the plant kingdom consisting of those organisms commonly called gymnosperms. The gymnosperms, a group that includes the pine, have stems, roots and leaves, and vascular, or conducting, tissue (xylem and phloem). ..... Click the link for more information. , class Pinopsida. coniferAny member of the order Coniferales, woody plants that bear their seeds and pollen on separate, cone-shaped structures. They constitute the largest division of gymnosperms, with more than 550 species. Most are evergreen, upright trees and shrubs. They grow throughout the world (except in Antarctica) and prefer temperate climate zones. Conifers include the pines (Pinus), junipers (Juniperus), spruces (Picea), hemlocks (Tsuga), firs (Abies), larches (Larix), yews (Taxus), cypresses (Cupressus), bald cypress cypresses (Taxodium), Douglas firs (Pseudotsuga), arborvitaes (Thuja), and related groups. They include the world's smallest and tallest trees. Conifers supply softwood timber used for general construction, mine timbers, fence posts, poles, boxes and crates, and other articles, as well as pulpwood for paper. The wood is also used as fuel and in the manufacture of cellulose products, plywood, and veneers. The trees are the source of resins, volatile oils, turpentine, tars, and pharmaceuticals. Conifer leaves vary in shape but generally have a reduced surface area to minimize water loss. Especially in the pines, firs, and spruces, the leaves are long and stiff and are commonly referred to as needles. Cypresses, cedars, and others have smaller, scalelike leaves. Conifers were the dominant type of vegetation just before the advent of angiosperms (see flowering plant). conifer any gymnosperm tree or shrub of the phylum Coniferophyta, typically bearing cones and evergreen leaves. The group includes the pines, spruces, firs, larches, yews, junipers, cedars, cypresses, and sequoias conifer [′kän·ə·fər] (botany) The common name for plants of the order Pinales. conifer A cone-bearing tree or shrub of the gymnospermous order; a softwood which includes cypress, firs, pines, and spruce. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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