Roselle, also known as Luoshenhua, Luokehong, Shanqie, etc. , a plant of Panicum in Malvaceae, is widely distributed in tropical and subtropical regions. Originated in the west and India, it is cultivated in Zhejiang, Guangxi, Guizhou, Yunnan and Shanghai. Roselle plants 1.5 ~ 2 meters high, with lavender stems, erect stems and many branches. Leaves alternate. It blooms in summer and autumn, with long flowering period, cup-shaped calyx and purple and yellow corolla. Every flowering period, red, green and yellow alternate with each other, which is very beautiful and has the reputation of "plant ruby". Calyx (fresh or dry) has the functions of lowering blood pressure, resisting scurvy, diuresis, relieving bronchitis and cough.
reference data
Roselle-Baidu Encyclopedia