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.
The nearest trees were betula papyracea and excelsa, and Populus tremuloides.
It has been compared with a European species of birch, the betula pendula.
betula nana occupies the drier situations, but creeps entirely upon the ground.
betula papyracea (canoe birch), prevailing everywhere and about Bangor.
Indeed, some species never form a distinct heart-wood, birch (betula alba) being an example.
The common Birch (betula alba) is an exceedingly graceful tree.
The sources from which powder charcoal is made are dogwood (Rhamnus frangula), willow (Salix alba), and alder (betula alnus).
In the immediate vicinity are found only betula lutea and betula pumila.
It was in this swamp that the writer found a peculiar form of birch which has been determined as betula Sandbergi.
It is assumed that this form is a cross between betula lutea and betula pumila.