pignut hickory
Published by espringer,
The pignut bark may look almost shiny when young -- the outer layer has a bit of a sheen, and is only a bit broken up by vertical lines of strain. New bark layers seem to build up under the protective strips of intact outer bark, leaving deeper and deeper fissures. By the time the tree is old, the fissures seem almost bottomless.
Many other nuts, including some other hickory species' nuts, are carried off and buried by squirrels. These nuts, however, tend to be eaten on the spot, so empty husks may well be found below…
