Patetella L. Stem erect, branches oblique. Leaves pinnately divided, head single, tubular flowers, corolla yellow, achene linear, flowering from July to September.
It is native to Mexico. It is distributed in Sichuan, Guizhou, Yunnan and other places. It is grown on hillside grassland, forest or garden cultivation at an altitude of 750-1600m. It has medicinal value. The whole herb can be used as medicine, harvested in summer and autumn, used fresh or dried in the sun. The taste is bitter and flat. It has the effect of clearing heat and dampness and relieving cough. For coughing, dysentery, cough, toothache, wind fire, eye pain; external use for mumps, breast pain.
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