Abstract:The root tuber of Polygonum multiflorum is a kind of chinese drug in common use.The secondary structure in it is anomalous.In the trans- verse section of a developed root tuber,it is composed,from outside to centre,of periderm,parenchyma,a irregular ring

Abstract:Pollens of Brassica campestris Linn.Var.oleifera DC. contain seven soluble sugars,i.e.glucose,fructoes,sucrose,maltose, rhamnose,arabinose and xylose,and a neutral polysaccharide consists of arabinose,glucose and xylose;In addition to cystine,free amino a