Grass prefix, the next one is old, the next day, what to read?

Hi, Shi. Yarrow, a perennial herb, has horny stems, alternate leaves, deeply pinnate, serrated lobes, white flowers, achenes and flat. The whole plant is used as medicine, and the stems and leaves contain aromatic oil, which can be used as spices. I think you must have seen it in the brochure of a spice, and then you are discussing it with your colleagues or friends. By the way, the stem of this yarrow is very special. In ancient times, it was used for divination.

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