birches-belonging to the common name of several deciduous trees, of the family Betulaceae, genus Betulia. They are medium-height species, milky white bark, flexible and hanging branches, rhombus-shaped leaves, small, pointed and toothed, with male and female flowers on the same stem; It is distributed throughout almost all of Europe, and is used in carpentry and cabinetmaking, in the manufacture of rustic shoes, baskets, boxes, etc. Its leaves have medicinal properties and its bark contains an essential oil that is used to tan different types of hides.