From Japanese-English FreeDict Dictionary ver. 0.1:
[news2] [nf33] 樺 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, 桜皮 /(en)tʃˈaɪniːz(ja)lˈe̞tə (en)tʃˈaɪniːz(ja)lˈe̞tə/, (樺) [news2] [nf33] かば /kˈäbä/, (樺) かんば /käˈũbä/, (out-dated or obsolete kana usage) かにわ /känˈiwä/, () カバ /kˈäbä/
(noun (common) (futsuumeishi))
Note: word usually written using kana alonebirch (esp. Japanese white birch)