Plstygyrium repens is an extremely common inhabitant of decorticated logs. It has a distinctively look: dark green, almost oily-looking. 
 

 



There are two fairly common species of Entodon in Ohio, differentiable in the field by the disposition of their leaves on the stem. E. cladorhizans (not shown) is strongly flattened (complanate), whereas this species, E. seductrix, is julaceous i.e., the leaves surround the stem in an expanded uniform way so that the branches are more or less tubular, like a cat's tail.