Vet. Ak. Handl. 249. 1769.
Common Name: Witch's Butter
Fruit bodies 1-7 cm broad, flabelliform to cerebriform, gelatinous, viscid to slippery when moist, hard and stiff when dry; pallid yellowish to yellowish-orange to orange in color, flesh gelatinous.
Spores 7-18 X 6-14 µm, subglobose to elliptical, smooth, hyaline to pale yellowish. Basidia longitudinally septate.
Gregarious on wood, where it is parasitic on Stereum species.
Edible, but without flavor.
Tremella mesenterica or Witches Butter is the name assigned to most collections of yellowish-orange jelly fungi in California. Dacrymyces palmatus, however is very similar and the two species cannot be reliably told apart without the use of a microscope. Tremella mesenterica has longitudinally septate basidium while the basidium in Dacrymyces palmatus resembles a tuning fork.