Snake bed (scientific name: Fructus Cnidii? Curse. ), belonging to the genus Panicum in Umbelliferae, with a height of 10-60cm. Roots are conical and slender; Stems erect or oblique, much branched; The lower petiole is short, and the upper petiole is sheath-shaped; The compound umbel is 2-3 cm in diameter; The total bract is 6- 10, and there are many small total bracts, and the umbel has flowers15-20; Petals white, apex with inflexed uvula; Quillo uplift; Meristem is rectangular with straight endosperm ventral surface. The flowering period is April-July, and the fruiting period is 6-65438+1October.

Distributed in East China, Central South and other regions, as well as North Korea, North America and other European countries. Born in fields, roadsides, grasslands and riverside wetlands.

The fruit of the snake bed "Fructus Cnidii" has the effects of eliminating dampness, killing insects, relieving itching and strengthening yang.