药材鉴别药材呈不规则连珠状或结节状圆柱形,略弯曲,偶有分枝,长2~10 cm,直径1~2.2 cm。北苍术直径可达4 cm。表面灰棕色,有皱纹、横曲纹及残留须根,顶端具茎痕或残留茎基。质坚实,断面黄白色或灰白色,散在有多数橙黄色或棕红色油室,暴露稍久,可析出白色细针状结晶。具特异香气,味微辛、苦。饮片鉴别饮片呈不规则类圆形或条形厚片。外表皮灰棕色至黄棕色,有皱纹。有时可见残留根茎。饮片切面 Identification of herbs was irregular Lianzhu or nodular cylindrical, slightly curved, occasionally branched, length 2 ~ 10 cm, diameter 1 ~ 2.2 cm. North Atractylodes up to 4 cm in diameter. Surface gray-brown, wrinkled, cross-curly and residual fibrous roots, stems with the top marks or residual stem base. Solid, yellowish white or gray cross section, scattered in most of the orange or brown red oil chamber, exposed a little longer, can precipitate white fine needle crystal. With a unique aroma, taste slightly Xin, bitter. Pieces to identify Pieces were irregular round or strip thick slices. Outer skin gray-brown to yellow-brown, wrinkled. Sometimes visible rhizomes. Pieces cut surface