Found on decomposing wood in a mixed redwood/hardwood forest. Second photo shows the cluster with the tip of a pencil for scale.
parasitic on Coprinus comatus, a rarity!
Found on Favolaschia calocera, https://www.inaturalist.org/observations/196416305
Referring to the "photobomber" at bottom of the pic
Ash Tree Bolete with Cicada
Growing in the sand dunes