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Salix nigra - Black willow

188 bytes added, 6 years ago
Chemical Composition
==Chemical Composition==
WhiteAnalysis has shown a brown, resinous, acrid substance, insoluble in potassium hydroxide and probably containing pelletonin, two oils soluble in potassium hydroxide -willow barkone dark brown and acrid, according to Pelletier the other yellow - tannin, gum, potassium sulphate and Caventoucarbonate, consists of bitterpotassium chloride, yellow coloring mattercalcium phosphate and carbonate, green fatty mattersilica, tannic acidalumina, resinlignin, etc. The chief constituentAn alkaloid, howeverPyrethrine, as with all the willowsyielding pyrethric acid, is stated to be the glucosid salicin (see Salicinum)active principle.<ref name="chemical composition"/>
==Common names==

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