Peziza oliviae has small olive to golden-brown stalked cups 0.7–2.5 cm in height with a diameter of 0.8–4 cm.
Habitat and distribution
Found in small streams in the Cascade Range of North CentralOregon at elevations between 800 and 1500 metres. P. oliviae was found growing on dead wooden debris on the bottom of streams or on saturated wood at the surface or bank of the stream. Documented June through October.