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
Ciboria rufofusca produces shallow translucent brown cups on slender stipes and, as such, they look like many other small discomycetes. However, their occurrence on cone scales of true firs sets them apart and makes identification easy. The spores are smooth and ovoid (5--7.5 x 3--3.5 µm), sometimes with two oil drops.