Pseudohydnum gelatinosum (Toothed Jelly Fungus) Although these dainty mushrooms (average size about 3-5 cm high by about as broad) resemble the true toothed fungi (family Hydnaceae), they belong to an unrelated mushroom family (Exidiaceae). If you're paying attention to the ground as you walk through the woods, you'll find them perched on fallen sticks and twigs. Like the tooth fungi, they bear their spores on tooth-like projections on the underside of the cap. However, tooth fungi are usually larger and tougher. The species epithet "gelatinosum" refers to the jelly-like flesh. Most books list it as edible, but without much substance or flavor.