Flat storage

Flat storage

HerbaPolygoniAvicularis

Common knutgrass herb

[alias] Phyllostachys oblongata, Euphorbia, Polygonum hydropiper, ant grass.

[source] it is the aerial part of Polygonum aviculare L.

[plant morphology] annual herb, 10-40cm in height, often with white powder; stem tufted, creeping or obliquely ascending, green, furrowed, leaves longitudinally, linear to lanceolate, 1-4cm in length and 6-10cm in width, apex obtuse or acute, base cuneate, subsessile; Stipule sheathy, lower brown, upper white transparent, with obvious veins. The flowers have 1-5 clustered leaf axils, exposing the outside of the stipule sheath, short pedicel, with joints at the base; perianth 5-lobed, lobes elliptic, dark green, margin white or light red; stamens 8; style 3-lobed. Achene ovate, more than 2 mm long, with edge on the surface, brown or black, with inconspicuous dots. The flowering and fruiting period is from May to October.

Born in the field, roadside. Produced in most parts of the country.

[harvesting] harvest in summer, remove roots and impurities, and dry in the sun.

[chemical constituents] it contains aviculin, quercetin, caffeic acid, chlorogenic acid, p-coumaric acid, oxalic acid, d-catechol, etc.

[flavor] slightly cold in nature and bitter in taste.

[function indications] diuretic, Tonglin, insecticidal, antipruritic. It is used for bladder heat, short red urine, astringent pain, skin eczema and itching.