Substrate: cone scales of true firs
Spores: spores are smooth and ovoid (5--7.5 x 3--3.5 µm)
Conservation Status: Not of concern
Fruitbody initially bladder-like, becoming goblet-shaped to flat, 0.3-1.0 cm broad; upper surface smooth, orange to chestnut-brown; margin can be wavy and split, finely dusted with white when young; underside concolorous with upper surface, sometimes frosted with white; stalk slim, 0.2-1.5 x 0.07x0.15 cm, brownish, darker towards the base.
Sources: Trudell, Steve and Joe Ammirati. Mushrooms of the Pacific Northwest. Portland, Timber Press, Inc. 2009. Beug, Michael W., Alan E. Bessette, and Arleen R. Bessette. Ascomycete Fungi of North America. Austin, University of Texas Print, 2014.
PNW Herbaria: Specimen records of Ciboria rufofusca in the Consortium of Pacific Northwest Herbaria database
CalPhotos: Ciboria rufofusca photos