Betula lenta
Oil of wintergreen is obtained by distilling the twigs and inner bark of this tree. One can readily detect the wintergreen oil just by smelling a freshly broken twig. Both birch beer and birch tea are make from black birch. |
This key was developed by "bt" in June 1982. It was put into HTML format by Stephen Ostermiller in July 1997. Copies of the entire guide in zip format that may be taken to camp on a laptop are available to those who write.