What does red hair grass look like?

Red hair grass, the name of traditional Chinese medicine. It is the whole grass of Commelina communis.

Alias: Dijiucao, Tian Mingzhen, Dilan, Duck Tongue, Ditan Flower, Shanhai Belt, Red Grass, Bamboo Leaf Grass, Grandson, Lilac, July Flower, Chicken Tongue, Thin Bamboo Shell, Blood Sorrow, Red Bamboo Tongue, Thin Bamboo Field and Chicken Tongue Grass.