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Boxwood, American | | Name : | Boxwood, American | | Botanical : | Cornus florida | | Synonyms : | Bitter Redberry. Cornel. New England Boxwood. Dog-Tree. Flowering Dogwood. American Dogwood. Benthamidia florida. Box Tree. Virginian Dogwood. Cornouiller à grandes fleurs. Mon-ha-can-ni-min-schi. Hat-ta-wa-no-minschi. | | Family : | Cornaceae | | Parts Used : | The dried bark of the root. | | Habitat : | The United States, from Massachusetts to Florida. | | Description : | An ornamental little tree introduced into English cultivation about 1740, but still uncommon. It grows from 10 to 30 feet in height, with oval, opposite leaves, dark, clear green above and lighter below. The flowers occur in a small bunch surrounded by four large, white, involucral bracts that give the tree the appearance of bearing large white flowers. The name 'Florida' alludes to this effect, and the name 'Cornus,' from cornu, 'a horn,' refers to the density of the wood. It flowers so punctually in the third week in May that it sets the time for the Indians' corn-planting. The oval berries are a brilliant red. The bark is blackish, and cut into almost square sections. The inner bark can be utilized to make black ink, half an ounce of bark being mixed with two scruples of sulphate of iron and two scruples of gum-arabic dissolved in sixteen ounces of rainwater. A scarlet pigment can be obtained from the root bark. The wood is heavy and fine-grained, valuable for small articles because it takes an excellent polish. It is cut in autumn and dried before using. The twigs, stripped of their bark, whiten the teeth, and are used as a dentifrice by the Creoles who inhabit Virginia. The juice of the twigs preserves and hardens the gums. A bitter but agreeable drink can be prepared from the fruits infused in eau-de-vie.
In commerce the bark is usually in quilled pieces several inches long and from 1/2 to 2 inches broad, which may be covered with the greyish-red outer bark or may be deprived of it. They are brittle, and the short fracture shows a mottled red and white colour. There is a slight odour, and the taste is bitter and a little aromatic; when fresh, almost acrid. The powder is a reddish-grey colour. | | Constituents : | The bark has been found to contain tannic and gallic acids, resin, gum, extractive, oil, wax, red colouring matter, lignin, potassa, lime, magnesia, iron, and a neutral, crystalline glucoside called Cornin. Either water or alcohol extracts the virtues of the bark. The flowers are said to have similar properties, and to be sometimes used as a substitute. It is said that the berries, boiled and pressed, yield a limpid oil. | | Uses : | Before Europeans discovered America, the Red Indianswere using the bark in the same way as Peruvian bark. It is valuable in intermittent fevers, as a weak tonic for the stomach, and antiperiodic, as a stimulant and astringent. As a poultice in anthrax, indolent ulcers, and inflamed erysipelas, it is tonic, stimulant and antiseptic. In the recent state it should be avoided, as it disagrees with stomach and bowels. Cinchona bark or sulphate of quinea often replace it officially. 35 grains of Cornus bark are equal to 30 grains of cinchona bark.
The leaves make good fodder for cattle, and in Italy the oil is used in soups.
The ripe fruit, infused in brandy, is used as a stomachic in domestic practice, and a tincture of the berries restores tone to the stomach in alcoholism. Hippocrates, Dioscorides, and Pliny recommend them in diarrhoea. | | Dosage : | Formerly, 1 to 2 oz. of the powder between paroxysms of intermittent fever.
Of fluid extract, 30 minims as a tonic.
Of cornin, 2 grains. |
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