Betula (genus)

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  12. Betulaceae (family)
  13. Betula
Scope note
Genus of hardy, deciduous trees of the family Betulaceae, common to North America, Europe and Asia. Birch tress are readily distinguished by their white bark and diamond-shaped leaves. The lightweight bark contains natural waxes, oils, and tannins that make it tough, durable, and waterproof. Thin sheets of bark were commonly used for paper in Central Asia and the Far East. The water-impervious bark was used for wigwams, canoes, and shoes for Native Americans. Birch produces a strong, pale yellow-brown wood with a close, straight grain and uniform texture that finishes to a smooth surface. Dyes can also be obtained from various parts of birch trees. The leaves, usually gathered before they develop a mature green color, produce a yellow dye. The bark produces a pale brown color. The female catkins (a long shoot bearing flowers with no leaves) are boiled to produce a dull yellow color. Birch bark oil and birch beer are made from sap obtained from the trees. The sap allows birch bark to burn even when it is wet.
Betula
Accepted term: 29-Apr-2024