Hedyotis diffusa (scientific name: Hedyotis diffusa), also known as Hedyotis diffusa, Hedyotis diffusa, Hedyotis diffusa, Hedyotis diffusa, Hedyotis diffusa, Leymus chinensis, Festuca arundinacea and Hedyotis diffusa. Its height is 15-50cm, and its roots are slender, branched and white. The stem is slightly square or oblate, smooth and hairless, with many branches at the base; Flowers bloom in spring, and the seeds are brown and small, with three corners. Hedyotis diffusa is bitter and light in taste and cold in nature. Its main functions are clearing away heat and toxic materials, relieving pain and resolving hard mass, and promoting diuresis and dehumidification.

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