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McGraw Hill Financial, Inc. is an American publicly traded corporation headquartered in Rockefeller Center in New York City. Its primary areas of business are financial, publishing, and business services.
An order of flowering plants, division Magnoliophyta (Angiospermae), in the subclass Rosidae of the class Magnoliopsida (dicotyledons). The order consists of three families: the Rhamnaceae with about 900 species, the Vitaceae with about 700, and the Leeaceae with about 70. The Rhamnales have a single set of stamens, opposite the petals, and usually a well-developed intrastaminal disk. The ovary has two or more locules, with one or two erect, bitegmic ovules from the base in each locule. The seeds have a well-developed endosperm. The Rhamnaceae are mostly shrubs or small trees with simple, entire or merely toothed leaves, as in cascara (<i>Rhamnus purshiana</i>) and the common buckthorn (<i>R</i>. <i>cathartica</i>). The Vitaceae are mostly tendril-bearing climbers with compound or lobed leaves, as in grapes (<i>Vitis</i>), the Virginia creeper (<i>Parthenocissus quinquefolia</i>), and Boston ivy (<i>P</i>. <i>tricuspidata</i>).
Industry:Science
An order of flowering plants, division Magnoliophyta (Angiospermae), in the subclass Rosidae of the class Magnoliopsida (dicotyledons). The order contains a single family, Rhizophoraceae, with about 100 species widely distributed in the tropics. The plants are mostly tanniferous trees and shrubs with the leaves opposite, simple, and entire. The flowers are regular, mostly perfect, and variously perigynous or epigynous. The sepals are four or five and commonly fleshy or leathery; the petals are the same number as the sepals and likewise small and fleshy. The stamens are twice as many as the petals or sometimes more. The pistil has 2–6 fused carpels with two or rarely more ovules per carpel; the fruit is berrylike or rarely a capsule. Most members of the family are inland species, but the most conspicuous group are some 17 species of shoreline shrubs, the mangroves. The fruits of mangroves are viviparous and have distinctive enlarged hypocotyls. The family has been subject to diverse interpretations, and has been associated with the Myrtales and with the Cornales.
Industry:Science
An order of flowering plants, division Magnoliophyta (Angiospermae), in the subclass Rosidae of the class Magnoliopsida (dicotyledons). The order consists of 7 families and nearly 2300 species, mostly of tropical and subtropical regions. The vast majority of the species belong to only 3 families, the Malpighiaceae (about 1200 species), Polygalaceae (about 750 species), and Vochysiaceae (about 200 species). Within its subclass, the order is distinguished by its simple leaves and usually irregular flowers, which have the perianth and stamens attached directly to the receptacle (hypogynous), and often have the anthers opening by terminal pores instead of longitudinal slits. The Barbados cherry (<i>Malpighia glabra</i>), noted for the high vitamin-C content of its fruits, is a well-known member of the Polygalales.
Industry:Science
An order of flowering plants, division Magnoliophyta (Angiospermae), in the subclass Rosidae of the class Magnoliopsida (dicotyledons). The order consists of only the family Podostemaceae, with about 200 species, the greatest number occurring in tropical America. They are submerged aquatics with modified, branching, often thalluslike shoots; small, perfect flowers with a much reduced perianth; a superior ovary with united carpels and numerous small seeds without endosperm.
Industry:Science
An order of flowering plants, division Magnoliophyta (Angiospermae), of the subclass Arecidae in the class Liliopsida (monocotyledons). The name of the subclass is derived from the ordinal name. The order consists of the single family Arecaceae (Palmae), the palms, with more than 200 genera and nearly 3000 species, largely confined to tropical and subtropical regions. The order Arecales has also been called Palmales or Principes.
Industry:Science
An order of flowering plants, division Magnoliophyta (Angiospermae), sometimes called Synanthae or Synanthales, in the subclass Arecidae of the class Liliopsida (monocotyledons). The order consists of the single tropical American family Cyclanthaceae, with about 180 species. They are herbs or, seldom, more or less woody plants, with characteristic leaves that have a basal sheath, a petiole, and an expanded, usually bifid (cleft into two equal parts) blade which is often folded lengthwise (plicate) like that of a palm leaf. The numerous, small, unisexual flowers are crowded into a spadix which serves as a sort of pseudanthium. One of the species, <i>Carludovicia palmata</i>, is a principal source of fiber for panama hats.
Industry:Science
An order of flowering plants, division Magnoliophyta (Angiospermae), subclass Commelinidae of the class Liliopsida (monocotyledons). The order consists of the single family Eriocaulaceae, with about 1200 species. The Eriocaulales are Commelinidae with a reduced (or no) perianth and with unisexual flowers aggregated into a dense, involucrate head that is elevated above the clustered, basal leaves on a long peduncle. Although the individual flowers are small and inconspicuous, the heads are more or less showy and pollination is usually by insects, in spite of the absence of nectar and nectaries. The perianth typically consists of two series of similar, white-hyaline tepals, three members in each series. Each locule of the ovary has a single, pendulous, orthotropous, tenuinucellate ovule. The order is of negligible economic importance.
Industry:Science
An order of flowering plants, division Magnoliophyta (Angiospermae), which gives its name to the subclass Asteridae in the class Magnoliopsida (dicotyledons). The Asterales have often been included in the order Campanulales, but they are perhaps more closely allied to the Rubiales and Dipsacales. The order consists of only the single very large family Asteraceae (Compositae), with about 20,000 species, occurring in nearly all parts of the world but most abundant and conspicuous in areas which are not densely forested.
Industry:Science
An order of flowering plants, division Magnoliophyta (Angiospermae), which is included in the subclass Commelinidae in the class Liliopsida (monocotyledons). It consists of 4 families and about 1000 species, the bulk of which is in the families Commelinaceae (about 700 species) and Xyridaceae (about 200 species). The order is marked by its flowers that ordinarily have the perianth well differentiated into sepals and petals but do not have nectaries or nectar. The ovary is consistently superior and the fruit capsular. The wandering Jew (species of <i>Tradescantia</i> and <i>Zebrina</i> in the Commelinaceae) belongs to this order.
Industry:Science
An order of flowering plants, division Magnoliophyta (angiosperms), in the large asterid assemblage (often Asteridae in previous systems of classification). Nearly all of the 24 families assigned to the order have previously been considered members of several orders in the subclass Dilleniidae. Ericales are a diverse group that have general asterid characters: tenuinucellate ovules; flowers with fused sepals, and often, fused petals with the anthers fused at least basally to the petals, even when the petals are apparently free; cellular endosperm formation; and tegumentary tapeta.
Industry:Science
