外表面粗糙，易成鳞片状剥落；体轻，质脆，易折断，断面不平坦，外层黄棕色，内层灰白色的药材是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26252' and id < 2197469 and id<>'2197469' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26252' and id > 2197469 and id<>'2197469' order by id asc limit 5