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对正品木贼进行了显微组织及粉末研究，并与混淆品笔管草、节节草进行对照，首次从茎的表面片、叶鞘的横切片及粉末中，找出三者的明显区别．
The microsynthetic and powder researches of the genuine euphorbia were carried out, and compared with the confusing product Euphorbiaceae and Aegilops marinum, the obvious differences were found for the first time from the surface slice of the stem, the transverse slice of the leaf sheath and the powder.