Collection location: Santa Rosa, Sonoma Co., California, USA [Click for map]
Found growing close to Leucoagaricus barsii (Observation 4168) on a lawn, but there were no others like it nearby.
Pileus was striate and a dusty grey/brown at the margin, fading to tan, with a darker brown umbo. 1.5 cm across.
Gills were free, tan turning to brown.
Stipe satiny and fragile. 7.5cm long.
The next day all that was left was a blob of black goo.
I’m not sure how to differentiate between Coprinellus, Coprinus, and Coprinopsis. I tried a Google search but didn’t find anything very helpful. If anyone can point me in the right direction, I’d appreciate it.
Debbie asked how to differentiate macroscopically in the field coprinoides genres: I leave a small scheme ……. roughly microscopic features did not enter.
Coprinus s. strict. : non-separable radial veil, inside of the foot with disorderly hyphae. Ring or pseudovolva.
PSATHYRELACEAE: (Identifying with a magnifying glass to see setulas.)
—Coprinopsis: With separable abundant veil, never setulas presence of standing or pileus.
—Coprinellus: With detachable veil or no veil. Setulas normally present in the pileus or foot.
—Parasola: No veil, no setulas. (only in P. auricoma).
Debbie says that the sheets turned black …. there will be good to think of Coprinus sl although my drawing reminds me more of Psathyrella,,:—))
That helped a lot!
Tom Volk did a mushroom of the month on Coprinus comatus, and there were notes on the split into other genus.
See it at: