[3] Niorma hosseusiana has a fruticose (shrub-like) thallus that is densely branched and measures approximately 10–15 mm (0.4–0.6 in) in diameter.

This surface is smooth, frequently marked with striations, and lacks both a hairy (tomentose) texture and powdery coating (pruinose).

[4] The lichen's underside is mostly devoid of a protective outer layer (decorticate), presenting a flat to channel-like (canaliculate) appearance.

These are located at the ends of the lichen's branches and can either sit directly on the thallus (sessile) or have a small stalk (substipitate).

Its underside is coarse, featuring a texture that varies from granular to net-like, and its colour spans from pale yellow to grey.