White Hair Xiagu Cao,, alias: Xue Li Qing, see blood green, white head, retreat blood grass, blood grass, white Xiaqu. Plant Form:It is an annual or biennial herb of Labiatae, 10-30cm high, and the whole plant is white villous. Stem square, base creeping. Leaves opposite, spatulate or obovate-lanceolate, 3～11cm long, 0.8～3cm wide, irregularly undulate coarsely toothed at the edge; petiole narrowly winged. Verticillasters with 6 to 10 flowers arranged in interrupted pseudospikes; bracts leaf-shaped, calyx campanulate, 5-toothed; corolla labiate, light blue, light purplish-red, or white, base dilated, with a ring of hairs inside, upper lip short, erect, apical part slightly concave, lower lip 3-lobed, middle lobe obcordate, grayish-yellow, reticulate wrinkled. Flowering from March to July, fruiting from May to November. Born on roadsides, streamsides, grassy slopes and hilly mountainous areas among the cysts. Distribution area: It is mostly produced in East China, Central and South China and Southwest China. White Hair Xiaku Cao is the whole grass of the plant of the family Labiatae. It is bitter, sweet and cold in nature. It belongs to lung and liver meridians. It has the effect of clearing heat and removing toxins, resolving phlegm and relieving cough, and cooling and dispersing blood. Born on roadsides, forests, grasslands, near villages and ditches on the more shady and fertile soil.