the bark of dutch elm is grey - greyish green, smooth then elongated
grooves
the bark of
english oak is blackish brown with deep grooves
the bark of
european alder is blackish brown with lenticels and later with flat scales
bark of
ginkgo is greyish brown, furrowed
the bark of
goat willow is first smooth, later cracked grey grey to black
the bark of
grey poplar is first whitish grey and smooth later barky black
the bark of
hawthorn is greyish green and scaly
the bark of
honey locust is grey to greyish brown, furrowed, with thorns
the bark of
hornbeam
is smooth an grey to grey brown
the bark of
italian alder smooth, greyish green with lenticels later scaly
the bark of
katsura tree is brown - green with elongated grooves