Observation 4222: Coprinellus P. Karst.

When: 2007-09-22

Collection location: Santa Rosa, Sonoma Co., California, USA [Click for map]

Who: Debbie Drechsler (debdrex)

No specimen available

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.


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Add Comment
By: Nimmo (barky)
2011-10-30 00:47:57 CDT (-0500)

Nice illustration!

Coprinoides fungus..
By: Europe-coprinologist
2011-10-29 17:47:34 CDT (-0500)

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).

By: Europe-coprinologist
2011-10-29 17:30:16 CDT (-0500)

Debbie says that the sheets turned black …. there will be good to think of Coprinus sl although my drawing reminds me more of Psathyrella,,:—))

Thanks Douglas
By: Debbie Drechsler (debdrex)
2007-09-27 22:27:33 CDT (-0500)

That helped a lot!

Tom Volk’s Coprinus comatus pages has notes
By: Douglas Smith (douglas)
2007-09-27 09:49:33 CDT (-0500)

Tom Volk did a mushroom of the month on Coprinus comatus, and there were notes on the split into other genus.

See it at: