Rhizoma Atractylodis macrocephalae

Rhizome appearing as irregular masses, 3-13 cm long, 1.5-7.0 cm broad; Surface grey-yellow, nodes indistinct, with tubercular protuberances and fibrous root scars, stem bases and bud scars remaining at the upper end. Section loose, with spotted and scattered brown secretory cavities. Aromatic in odour. Sweet and bitter in taste, warm in nature and attributive to spleen and stomach channels.

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