Latin scientific name: Japanese boxwood. An annual or biennial herb of Solanum in Compositae. It grows on hillsides, roadsides, forest margins and wilderness.

It is distributed all over China, but also in other temperate and tropical countries in Asia. Stem erect, leaves basal, oblanceolate, violin-shaped.

Lobes with deep wavy teeth, petiole slightly winged. The flower heads have stalks and are arranged in umbrella, cone and umbrella shape; The involucre is cylindrical, the outer involucre is much smaller than the inner involucre, and the inflorescence is flat; All ligulate flowers, corolla yellow

All leaves and petioles are wrinkled or pubescent.

The head contains 10-20 tongue-shaped florets, a few or most of which are arranged in corymbose inflorescences at the top of stems and branches, and the peduncle is thin.

Involucre cylindrical, 4-5 mm long, rarely 3.5-4 mm long; The involucral bract has 4 layers, the outermost layer and outermost layer are extremely short, wide oval or wide, with the length and width less than 0.6 mm, the tip is sharp, the innermost layer and innermost layer are 4-5 mm long, rarely 3.5-4 mm long, and the width is 1- 1.3 mm, which is lanceolate, with the tip sharp, the edge is white and wide, and the inner surface is covered. All involucral bracts are glabrous outside. Ligulate floret yellow, pubescent outside corolla tube.

Achene is spindle-shaped, squashed, brown or reddish brown, long 1.5-2 mm, with a constriction mark at the top and no beak at the top, and11/3 longitudinal edges with small bristles. The crown hair is 2.5-3.5 mm long and relatively thick. Flowering and fruiting period: April-65438+1October.

Alias Sonchus oleraceus, Sanzhixiang (Guangxi Medicinal Plants List), Day Lily, Chinese Mustard, Chinese Mustard, Wild Mustard, Mustard Seed and Stinky Bitter (Fujian Jinjiang Chinese Herbal Manual).

The medicinal part is the whole grass or root of Gynura bicolor in Compositae.

Functions: clearing away heat and toxic materials, relieving swelling and pain, treating common cold, sore throat, mastitis, conjunctivitis, furuncle, urinary tract infection, leucorrhea and rheumatoid arthritis.

List of medicinal plants in Guangxi: "detumescence and pain relief". Treat a cold. "

② Handbook of Chinese Herbal Medicine in Jinjiang, Fujian: "Clearing away heat and toxic materials, promoting qi circulation and relieving depression, relieving sore throat."

③ Identification of common confused Chinese herbal medicines: antibacterial and anti-inflammatory. Treat furuncle, mastitis, tonsillitis, urinary tract infection, leucorrhea, conjunctivitis and rheumatoid arthritis. "

Oral administration and dosage: decocted, 3 ~ 5 yuan (fresh 1 ~ 2 Liang). External use: pound or pound juice and rinse your mouth.

Prescription ① Treatment of throat inflammation: fresh yellow crane grass, washed, mashed and washed with vinegar (no greasy food during treatment).

② Treatment of mastitis: fresh yellow crane grass 1 ~ 2 portions. Decoct in water, adde wine, mashing residues, heating and externally apply to that affected part.

③ Treatment of ascites due to liver cirrhosis: fresh yellow crane vegetable root costs four to six yuan. Decoct with water.

4 cure calluses: one or two fresh yellow crane vegetables. Decoct water and wine in half, and apply the residue externally.

⑤ Treatment of rabies bites: one or two fresh yellow crane herbs. Soak the juice in boiling water, and then apply the residue externally.