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Goose does not eat grass, and it is a Polygonum plant in Compositae. The annual grass of coriander is 5-500px high. The stem is slender, multi-branched, creeping at the base, easy to take root after landing, hairless or slightly fine. Leaves alternate; Sessile; Leaf blade cuneate-oblanceolate, 7-20 mm long and 3-5 mm wide, with blunt apex, irregularly toothed margin, glabrous, or slightly fine hairs below. Xin Wen, entering the lung meridian. Has the effects of dispelling cold, inducing resuscitation, relieving cough, removing toxic substances and relieving itching.