Crayfish grass

Crayfish grass

(records of Sichuan Traditional Chinese Medicine)

[synonyms] yacao (flora of Guangzhou), Tian Suxin (materia medica of Quanzhou), zixiongdan, Shuijiao (list of medicinal plants in Guangxi).

[source] it is the whole plant of Scrophulariaceae.

[plant morphology] Myrtle

It is an annual herb with a height of 10-25 cm. There are many fibrous roots. Stems erect or scattered, green purple, many branched, long branches creeping, nodes with adventitious roots. The leaf blade is oblong lanceolate, 1-3cm long, 0.5-1cm wide, apex acuminate or obtuse, margin with sparse obtuse teeth, upper green purple, lower pale. The results show that the flower is in a sparse raceme; the bracts are linear lanceolate at the base of pedicel; the calyx is bell shaped, 5-lobed at the apex, and the lobes are narrow and green; the Corolla is lip shaped, 5-lobed, and lavender; the stamens are 4, 2 fertile but not prominent, the anthers are close to each other, and 2 degenerate; the ovary is superior, and the style is single. Capsule linear lanceolate, 1-1.5 cm long, with persistent calyx. Seeds small, numerous. The flowering period is autumn and winter.

It grows at the edge of rice field or at low humidity. It is distributed all over the south of the Yangtze River.

[collection] harvest in September.

[nature and taste] 1. Sichuan records of traditional Chinese medicine: "it is cold in nature, light in taste and non-toxic. "

② "Quanzhou Materia Medica": "it tastes sweet and slightly pungent, has a flat nature and is non-toxic. "

Functions and indications: removing blood stasis, detumescence, detoxification and diuresis. Treatment of traumatic injury, carbuncle and swelling, gonorrhea.

① Sichuan records of traditional Chinese medicine: "it is used to treat falls, sprains and fractures. "

② "Quanzhou Materia Medica": "clearing away heat and toxin, removing blood stasis and breaking blood circulation, relieving gonorrhea and urinating. "

[usage and dosage] oral administration: decoction, fresh 1-2 Liang; mash juice or burn ash to soak wine. External use: tamping.

[formula selection] ① treatment of traumatic injury: water shrimp grass, red sour grass, red Achyranthes bidentata, taro root, ash, wine. (records of Sichuan Traditional Chinese Medicine)

② Treatment of tetanus convulsions: fresh water shrimp grass, mash juice wine service, three Liang each time.

③ Treat carbuncle, gangrene, furuncle, nameless swelling poison: fresh water shrimp grass, a little sour rice, salt each, tamp on the affected area.

④ Cure the bite of mad dog and poisonous snake: fresh water shrimp grass, mash juice, soak wine, warm clothes, apply residue to the affected area, three Liang each time. (2) Quanzhou materia medica