Old man's grass

Old man's grass

Handbook of commonly used Chinese herbal medicines in Northeast China)

[synonym] small spear xiangai (Qinghai commonly used Chinese herbal medicine manual), old man AI (Heilongjiang commonly used Chinese herbal medicine manual).

[source] it is the whole plant of Leontopodium villosum.

[plant morphology] Edelweiss, also known as snow grass and wormwood.

Perennial herbs, 10-25 cm high. The whole plant is densely covered with gray white wool. Roots slender, brown; rhizomes stout, branched. Stems tufted, erect or oblique. Leaves simple, alternate, oblong or linear lanceolate, 1.5-3 cm long, 2-6 mm wide, apex acute, acuminate, base cuneate, entire, densely woolly on both sides; sessile or basal leaves shortly stipitate. Capitate inflorescence discoid, yellow, with short peduncle, 3-5 clustered stem apex, surrounded by 2-4 bracts, bracts lanceolate or elliptic, densely covered with white woolly hairs on both sides; involucre hemispherical, involucre 2-3 rows, oblong lanceolate, apex acuminate, herbaceous, upper brown, dry membranous, abaxially densely covered with white woolly hairs, smooth inside; flowers unisexual or heterosexual inflorescence, margin There are a few female flowers with bisexual flowers in the center. The female flowers are tubular, solid, 2-3 mm long, with slightly enlarged base and unequal teeth at the top of corolla. The bisexual flowers are tubular, not solid, 3 mm long, with 5 lobes. The hairs are white, 1 row, about 5 mm long, with a ring at the base. Achene oblong, pubescent, fruit slightly increased at maturity. The flowering and fruiting period is from July to August.

Born in dry hillside, ditch side, field. It is distributed in northwest, northeast and North China.

[collection] from June to July, they were collected, washed, peeled and dried.

[nature and taste] Handbook of commonly used Chinese herbal medicines in Northeast China: "slightly bitter, cold. "

[functions and indications] ① the Handbook of commonly used Chinese herbal medicine in Northeast China: "clearing heat and cooling blood, benefiting kidney and promoting water. Treat acute nephritis, hematuria. "

② "The manual of commonly used Chinese herbal medicine in the north": "clearing heat, cooling blood, eliminating inflammation and diuresis. For acute and chronic nephritis, it is effective for the disappearance of proteinuria and hematuria. "

[usage and dosage] oral administration: decoction, 3-4 yuan.

[optional prescription] for nephritis: one or two Leontopodium, boiled water and three eggs. (Handbook of commonly used Chinese herbal medicines in Heilongjiang)

Chinese PinYin : Lao Tou Cao