Collection location: Sebastopol, Sonoma Co., California, USA [Click for map]
Thanks to Scott Bates for a quick ID.
Observations 3262, 3263 & 3264 were all fruiting within 20 yards of each other and the microcharacters in both of the two mature specimens are identical.
Spores 4-6um, subglobose but some ellipsoid, smooth and some showing a distinct pedicel or large apiculus. Capillitium flexuous and branched with very few septa and no pointed ends observed.