Imshaugia pyxiniformis is a rare species of corticolous (bark-dwelling), foliose lichen in the family Parmeliaceae.

Characteristics of the lichen include its narrow, incised lobes, lack of vegetative propagules, its pale lower cortex, and presence of the substance lichexanthone.

The type specimen was collected from the Serra do Cachimbo mountain range in Pará, at an altitude between 350 and 500 m (1,150 and 1,640 ft); there, in a tall canopy forest, it was found growing on bark in dry vegetation.

[2] The thallus of Imshaugia pyxiniformis, tightly attached to the bark substrate and yellow-gray in colour, reaches 3–4 cm (1.2–1.6 in) in diameter.

Apothecia are present; they are sessile, measuring 0.5–1.2 mm wide with a flat or somewhat concave, dark brown disc.