Jianxialuo, the name of traditional Chinese medicine. Cut the roots and whole grass of Lychnis coronata Thunb. for caryophyllales.
Perennial herb, 50-80cm high. The rhizome is horizontal, bamboo-shaped, yellow on the surface, white on the inside, with strip-shaped roots; the stem is erect, clustered, slightly ribbed, and the nodes are slightly enlarged and smooth. Simple leaves opposite; sessile; leaf blade ovate-elliptic, 6-10cm long, 2-4cm wide, apex acuminate or long acuminate, base round or broadly cuneate, margins with shallow serrations. 1-5 flowers in cymes; calyx long tube-shaped, 5-lobed at the apex, ovate at the tip of the lobes; 10 veins; 5 petals, orange-red, irregularly lobed at the apex, serrated, and narrow at the base into claws , with 2 scales between petals and claws; stamens 10, alternate with petals; ovary cylindrical, styles 5. Capsule with persistent calyx, apex 5-toothed. Seeds numerous. The flowering period is July and the fruiting period is August.