| 单词 | valerian | |||
| 释义 | valerianVa·le·ri·anV0011400 (və-lîr′ē-ən) Originally Publius Licinius Valerianus. Died c. ad 260.va·le·ri·anV0011400 (və-lîr′ē-ən)valerian(vəˈlɛərɪən)Valerian(vəˈlɛərɪən)va•le•ri•an(vəˈlɪər i ən)n. Va•le•ri•an(vəˈlɪər i ən)n.
valerianValerian(Publius Licinius Valerianus) (vəlēr`ēən), d. after 260, Roman emperor (253–60). He held important posts, both civil and military, under the emperors Decius and GallusGallus(Caius Vibius Trebonianus Gallus) , d. 253 or 254, Roman emperor after 251. He fought in the eastern campaign that proved fatal to Decius. Gallus became emperor and accepted Hostilianus, Decius' son, as his colleague, or nominal coruler. ..... Click the link for more information. . After the short reign of the former general Aemilianus, Valerian was proclaimed emperor. In 257 he organized a general persecution of the Christians. Although not an incapable man, he was nevertheless unsuited to rule in such a critical time, for N Italy, Greece, and Asia Minor were falling to the barbarians and to the Persians. Appointing his son, GallienusGallienus (Publius Licinius Valerianus Egnatius) , d. 268, Roman emperor. He ruled as the colleague (253–60) of his father, Valerian, and alone (260–68). When his father was in the East, Gallienus checked the Alemanni near Milan, and even after the capture of ..... Click the link for more information. , as coregent, Valerian undertook a campaign in the East against Shapur IShapur I or Sapor I , d.272, king of Persia (241–72), son and successor of Ardashir I, of the Sassanid, or Sassanian, dynasty. He was an able warrior king. ..... Click the link for more information. of Persia, who destroyed the Roman army and took (260) the emperor prisoner. Valerian died in captivity and was succeeded by Gallienus. valerian,common name for some members of the Valerianaceae, a family chiefly of herbs and shrubs of temperate and colder regions of the Northern Hemisphere; a few species, however, are native to the Andes. The name valerian is popularly used for plants of the genus Valeriana and also for other related plants that are cultivated in flower gardens or borders for the numerous small and fragrant blossoms. The common valerian (V. officinalis) is sometimes grown under the name garden heliotrope, although it is unrelated to the true heliotropes. A perennial herb, it was used as a condiment during the Middle Ages and later as the source of a perfume oil (from the scented roots and rhizomes). It is still cultivated in parts of N Europe and in some Asian countries for the essential oil, sometimes substituted for that of the related spikenardspikenard, name for several plants. The biblical spikenard, or nard, was a costly aromatic ointment, preserved in alabaster boxes, whose chief ingredient is believed to have been derived from Nardostachys grandiflora (or N. ..... Click the link for more information. , and for the dried roots and rhizomes, also called valerian and used medicinally as a sedative and carminative. The active ingredients are valopotriates. In the N United States the common valerian is found naturalized in the North, and several species grow indigenously elsewhere, e.g., V. ciliata on the prairies and V. uliginosa in eastern swamps and moist woodlands. The red valerian, or Jupiter's-beard (Centranthus ruber), and the African valerian (Fedia cornucopiae) are among other ornamental species native to the Old World. The valerian family is classified in the division MagnoliophytaMagnoliophyta , division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem). ..... Click the link for more information. , class Magnoliopsida, order Dipsacales.  valerianvalerianvalerianValerianvalerianva·le·ri·an(vă-lē'rē-ăn),valerian(və-lîr′ē-ən)valerianHerbal medicineA perennial herb that contains alkaloids, actinidine, choline, glycoside, resins, tannins, valepotriates, valerenic acid and volatile oils (including limonene); it is antispasmodic, antitussive, and sedative, and may act on the central nervous system. Valerian has been used for anxiety, colic, dandruff, dyspepsia, headaches, hypertension, insomnia, menstrual cramping, nervousness, stress and tachyarrhythmias. Toxicity Valerian should not be given to infants, and should be used with caution in pregnant women; in excess, it may cause headaches, irritability and blurred vision. va·le·ri·an(vă-ler'ē-ăn)valerian
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valerian - a plant of the genus Valeriana having lobed or dissected leaves and cymose white or pink flowers