Observation 67948: Panaeolus ater (J.E. Lange) Kühner & Romagn.
When: 2011-05-23
Herbarium specimen reported

Notes: Cap strongly hygrophanous, becoming yellowish on drying.
Spores in this collection 6-7 × 11-13 microns

Proposed Names

56% (1)
Recognized by sight
57% (1)
Recognized by sight: I don’t see why we should call this Panaeolus fimicola over P. cinctulus
Based on microscopic features: Spores do seem a little bit long for P. cinctulus though
84% (1)
Eye3 Eyes3
Recognized by sight: The name is a synonym to fimicola according to Funga Nordica, but is kept as a separate species both in SpeciesFungorum and MycoBank. The non-conical cap and spore width is a better match with ater in older keys (Moser).

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Cool sulphidia
By: Alan Rockefeller (Alan Rockefeller)
2011-06-07 04:09:41 CDT (-0400)

They do look like lumps of sulfur.

Forgot to mention
By: Irene Andersson (irenea)
2011-05-23 07:52:43 CDT (-0400)

that it’s a rather small mushroom, the caps don’t exceed one inch.
I have been looking at cinctulus too, but in my books it’s larger, and it’s not a spring species like fimicola. Here is what I call spring right now.

A difference in my keys, is that P. fimicola should have some kind of pleurocystidia that react dark red in sulfovanillin, but I don’t have that reagent. I’ll try to see if I can find some anyway.

Created: 2011-05-23 05:44:42 CDT (-0400)
Last modified: 2011-05-23 12:19:39 CDT (-0400)
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