the bark of
sweetgum
is grayish brown with fissured lengthwise
bark of
turkish oak is grey and smooth, later with deep furrows
the bark of
walnut
is grey and smooth later barky and black
the bark of white
oak is ash-gray, shallow fissured and scaly.
the bark of
white
poplar is first whitish and smooth, later barky and black
the bark of
white
willow is smooth white - grey, later cracked and grey to black -
grey
the bark of
wingnut
is light brown to grey with grooves
the bark of
wych
elm is light brown to grey later with grooves
the bark of
yellow
buckeye is grey to brown. First smooth and later scaly