| Urnula craterium |
| The Devil's Urn. An early springtime fungus; abundant during the morel mushroom season. |
| See Black Tulip fungus at Tom Volk's Fungi |
| See Urnula craterium at Fungi Growing on Wood |
| Spores measure 21–35 x 9–13 µm and have an ellipsoid to elongated-ellipsoid shape. Paraphyses project beyond the asci. |