Cetraria laevigata is a species of ground-dwelling, fruticose (bushy) lichen in the family Parmeliaceae.

[1] The thallus of Cetraria laevigata is pale brown, with an even paler underside.

The expected results of standard lichen spot tests on the medulla are PD+ (red), K−, KC−, and C−.

[1] Cetraria laevigata has an amphiberingian distribution pattern (i.e., on both sides of the Bering Strait), and is found in North America, from Alaska through upper Canada, as well as in eastern Siberia.

This fungus, described from specimens collected in Japan, does not visibly damage the host thallus or induce galls.