sweet-birch oil salicylate methyl salicylate oil of wintergreen wintergreen oil

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wood birch tree

Betula lenta Betula pendula canoe birch red birch American grey birch Betula fontinalis Western birch black birch birch tree water birch Western paper birch downy birch silver birch Betula alleghaniensis Betula Betula cordifolia American gray birch paper birch European white birch genus Betula Betula glandulosa American dwarf birch Betula pubescens Betula nigra Newfoundland dwarf birch paperbark birch white birch cherry birch Betula leutea gray birch mountain birch river birch tree swamp birch common birch Yukon white birch American white birch Betula populifolia sweet birch yellow birch grey birch Betula papyrifera Betula neoalaskana

woody birchen birken

switch birch rod

lather welt strap trounce lash whip flog slash

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