Monday, September 28, 2020

Sweet Birch or Cherry Birch - Betula lenta

 The Sweet Birch or Cherry Birch (Betula lenta) is most easily recognized by the combination of fine and sharply toothed leaf margins, wintergreen scent, scales on the cone-like fruit and dark brown almost black bark.  It is a deciduous tree that can reach heights up to 65 feet, but usually does not exceed 3.5 feet in diameter.  The tree grows in an upright form with a generally single erect straight trunk and a rounded crown.  The Sweet or Cherry Birch is native to the United States.  It prefers rich, moist soil, cool forest areas, mountain slopes, Appalachian hardwood forests.  It can be found naturally occurring from New York and Maine in the North to Northern Georgia, Alabama and Central Mississippi in the South.  It is not often confused with the closely related Yellow Birch as the bark is significantly different in not only color but texture as well (Yellow Birch has a yellowish exfoliating bark).


Image Citation: Rob Routledge, Sault College, Bugwood.org


The bark of the Sweet/Cherry Birch is a dark gray brown to brown black in color, it is smooth when young becoming furrowed with age.  The twigs exude a winter green aroma and taste when scraped or injured.  The leaves are alternate, simple, paperlike in texture, obvate and and heart shaped at the base.  The leaf margins are finely and sharply toothed.  The upper surface is a dark green while the lower surface is a more pale green.  The flowers occur in make and female catkins, the male are reddish brown and 7-10 cm long, while the female are pale green and 1.5-2.5 m long both occur in the late Spring.  The fruit is a winged samara born in a scaly erect egg shaped structure that matures in late Summer or early Fall.

               
                                                                            

Image Citation: Rob Routledge, Sault College, Bugwood.org




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