Abstract

Various parts of some 30 Salix species were screened for 14 simple phenolic glucosides and salicylacohol. Species-specific qualitative and quantitative variation of phenolic glucosides in willow species was considerable and dependent on the part of the plant examined. Generally, there was greater diversity in glucoside composition and a higher total amount of glucosides in the twigs than in the leaves and buds. The traditional classification turned out to be inconsistent with a classification based in phenolic glucosides only. However, simple phenolic glucosides can be used for the recognition of exomorphologically similar species and hybrid forms.

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