Observation 200: Mycena oregonensis A.H. Sm.
When: 1994-12-15
Collection location: Salt Point State Park, Sonoma Co., California, USA [Click for map]
No specimen available
Notes:
The date is only accurate to the month.
I’m not completely sure of the location, but I’m sure it came from northern California. Keyed out in Mushrooms Demystified.