adjective
scabrous
SKAB-rus/ˈskæbrəs/
Rough and abrasive in texture.
The branch's scabrous bark has raised crusts and jagged flakes.

Etymology
Latin “rough, scaly” supplied the image of an uneven, abrasive surface. Applied figuratively to speech or subject matter, that roughness became vulgarity or unpleasantness.
More examples
- Moss fills the cracks in the rock's scabrous surface.
- The tree's scabrous bark scrapes my arm.
- The pot is smooth inside but scabrous on the outside.
Forms
scabrous