Wolfweed

Wolfweed

(notes on materia medica)

[synonyms] WuJie (Erya), wuquat (Erya, Guo Pu's note), langyecao (materia medica), xiaoguicha (northeast medicinal plant records), Douzha grass (Sichuan medicinal plant records), zhenbaocao (zhenbaocao), luodaobao (Hangzhou medicinal plant records), daliangba grass, relay grass, needlework bag and Yibao (Shanghai commonly used Chinese herbal medicine).

[source] it's the whole plant of Compositae.

[plant morphology] Ranunculus Japonicus

Annual herbs. Stem erect, 30-80 cm high, sometimes up to 90 cm; branched from base, glabrous. The leaves are opposite, the leaves at the top of the stem are small, sometimes undivided, the leaves at the middle and lower parts of the stem are pinnately divided or deeply divided; the lobes are 3-5, ovate lanceolate to narrowly lanceolate; the petioles are thin subovate, base cuneate, sparse suborbicular, apex pointed or acuminate, margin sparsely irregularly serrate, the apical lobes are usually larger than those at the bottom; the petioles are winged. Inflorescence terminal, spherical or oblate; involucre bracts 2-row, inner row lanceolate, dry membranous, as long as or slightly shorter than the head, outer row lanceolate or oblanceolate, longer than the head, leafy; flowers are tubular, yellow; stigma 2-lobed. Achene flat, oblong obovate or obovate cuneate, 4.5-9 mm long, about 1.5-2.2 mm in diameter, the edge of a small inverted thorns, both sides of the central only a longitudinal rib, both sides of the upper end of the thorns have always been up, thorns on a small counter thorns. The flowering period is from August to September. The fruiting period is October.

It is also found in roadside wilderness. It is distributed in most parts of the country.

The root of this plant is also used for medicine. Another detailed special article.

This product and its same genus Bidens pilosa are called "bean dregs grass" in Sichuan area, and used equally. Bidens pilosa is one of the main varieties of the herb "jinzhanyinpan" in Guangdong and Guangxi. Please refer to "jinzhanyinpan".

[collection] the aboveground parts were harvested in summer and autumn and dried in the sun.

[chemical constituents] hay contains volatile oil (0.11%), tannin (2.01%), luteolin, benrhinogenin-7-glucoside and other flavonoids. The leaves contain about 160 mg% vitamin C. The oil content of the fruit was 23.78%.

[pharmacological action] quancao extract can sedate, depress blood pressure and slightly increase the amplitude of heart beat when injected into animals; it can diuresis and perspire when taken orally.

[taste] bitter and sweet, flat.

① "Materia medica collection": "bitter taste, flat, non-toxic. "

② Sichuan Traditional Chinese medicine annals: "the nature is flat, the taste is light. "

③ "Mindong Materia Medica" says: "the nature is flat, the taste is bitter and sweet. "

[function indications] for tracheitis, tuberculosis, pharyngitis, tonsillitis, dysentery, erysipelas, tinea.

① "Materia medica collection": "the Lord also has dysentery for a long time, children's abdominal fullness, erysipelas cold and hot. Take roots and stems and cook them. "

② "Ben Cao Tu Jing" is mainly used to treat blood dysentery. "

③ "Compendium": "for the treatment of tinea senilis, Tianyin is itching. For those who scratch the yellow water, mix it with ramming powder. "

④ "Mindong Materia Medica": "Nourishing Yin, benefiting lung, clearing heat and detoxifying. For cough, wheezing, sore throat. "

[usage and dosage] take orally: decoct the soup, 2-5 yuan (1-2 Liang fresh); grind it into mashed juice. External use: grind powder, sprinkle or mash juice.

[selection] 1. To treat tracheitis and tuberculosis: fresh wolfweed or two. Take it in water. (Fujian Chinese herbal medicine)

② Treatment of diphtheria, pharyngitis, tonsillitis: fresh wolf grass three to four Liang, plus fresh olive six, or Malan fresh root five money. Take it in water. (Fujian Chinese herbal medicine)

③ Treatment of sore throat: fresh wolf grass five money to one or two. Stew with rock sugar. (Mindong materia medica)

④ Treatment of blood dysentery: Wolf two Jin of grass, mash a small liter of juice, white flour half chicken, mix well with it, take it on an empty stomach. If there is no living one, but collect the seedlings to dry in the shade and pound them into powder. For those suffering from dysentery, take a square inch dagger and half a cup of honey water. (Ben Cao Tu Jing)

⑤ Treatment of eczema: the fresh wolf mashed the grass leaves and rubbed the juice. (Fujian Chinese herbal medicine)

⑥ Treatment of tinea: Wolf grind grass leaves and apply vinegar. (Fujian Chinese herbal medicine)