呈不规则的扁圆形，有分枝，表面灰白色或黄白色，以茎痕为中心有数圈同心环节的中药材是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26301' and id < 2200219 and id<>'2200219' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26301' and id > 2200219 and id<>'2200219' order by id asc limit 5