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Castanopsidis seu Quercus Semen

Chinquapin seed

槠子 〔櫧子〕 zhū zǐ

Kingdom: Plant

Origin in unofficial sources: Castanopsis sclerophylla (Lindl.) Schottky; Quercus myrsinaefolia Bl.; Quercus salicina Bl.

Use: Medicinal

Properties: Bitter and astringent*; balanced*; nontoxic*.

Actions and indications: Checks diarrhea, allays thirst, and eliminates stasis.* In Japan, the seeds of either Quercus are used to expel gall and urinary stones.

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