genus of the birches, from Latin betula "birch," from Gaulish betu- "bitumen" (cf. Middle Irish beithe "box tree," Welsh bedwen "birch tree"). According to Pliny, so called because the Gauls extracted tar from birches. Birch tar is still sold as an analgesic and stimulant and made into birch beer by the Pennsylvania Dutch.
Examples from the Web for betula
Historical Examples of betula
It has been compared with a European species of birch, the Betula pendula.American Forest Trees
Henry H. Gibson
Betula papyracea (canoe birch), prevailing everywhere and about Bangor.The Maine Woods
Henry David Thoreau
The common Birch (Betula alba) is an exceedingly graceful tree.Botany for Ladies
In the immediate vicinity are found only Betula lutea and Betula pumila.
Betula papyrifera is found about a mile distant to the south.