Scientific name: Urnula craterium (Schweinitz) Fries
Derivation of name: Crater- means "cup" or "crater."
Common name(s): Devil's urn; Crater cup
Occurrence on wood substrate: Saprobic on deciduous
wood; in groups or clusters on decaying wood or on the
ground attached to buried wood; spring.
Dimensions: This fungus is deeply cup-shaped with a
distinct stalk; cups are 3-11 cm high and 2-7 cm wide.
Sterile outer surface: Black to brownish-black, grayish-
brown, or pinkish-brown; scurfy; margin toothed and
Fertile inner surface: Blackish-brown to black;
More information at MushroomExpert.com:
More information at TomVolkFungi.net:
Figure 1. This is a typical occurrence of Urnula
craterium, next to
a fallen branch.
Photo © John Dawson.
Figure 2. Another cluster of fruit bodies near a fallen
hardwood branch. Photo © Larry Grand.
Figure 3. Note how black the inner fertile surface can be.
Photo © John Plischke III.
Figure 4. Crater cup and devil's urn are such appropriate
for this fungus. Photo © David Work.
Figure 5. Arora indicates the outside surface can be
pinkish-gray with cups becoming darker and smoother
with age. Note the torn rim. Photo © Fred Habegger.
Figure 6. A beautiful specimen of Urnula craterium.
Photo © Chris Snyder.