Observation 219805: Panaeolus (Fr.) Quél.
When: 2015-10-19
(37.8721° -122.265° )
No herbarium specimen

Notes: Key characters for ID: Small mushroom with
• Cap: bell shaped; hygrophanous (dark brown changing to tan).
• Stipe: slender, delicate, pale.
• Spores: rough texture to surface.

Habitat notes: Growing in the grassy lawn between Mulford Hall, West Entrance Circle, and University Avenue.


Panaeolina foenisecii
Panaeolina foenisecii
Panaeolina foenisecii spores in Melzer’s

Proposed Names

57% (2)
Recognized by sight: Brian Bowers
Based on microscopic features: Spores lemon-shaped.
Based on chemical features: Spores dextrinoid in Melzer’s and dark reddish brown in KOH.
83% (1)
Recognized by sight: P. castaneifolia probably (!= P. olivaceus).

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Byrain
2015-10-19 21:07:01 CDT (-0400)

Do the spores have guttules (oil-drops)?
Are there 4 and 2 spored basidia or just 4 spored?
How wide are the epicutis cells?

The spores are not dextrinoid.

The microscopic features confirm: Panaeolina foenisecii
By: Brian Bowers (bbowers)
2015-10-19 20:49:25 CDT (-0400)

I have rough spores, so Panaeolina foenisecii! Thanks, Alan!

Microscopic features
By: Alan Rockefeller (Alan Rockefeller)
2015-10-19 19:29:44 CDT (-0400)

The microscopic features you noted are not sufficient to distinguish between Panaeolus foenisecii and P. cinctulus. If the spores are rough you have Panaeolus foenisecii, and you can keep it – if smooth, you need to throw it away ASAP because it is the hallucinogenic and illegal species Panaeolus cinctulus.

You can also distinguish the species by the spore print color, P. foenisecii has slightly browner spores while P. cinctulus has jet black spores.

Created: 2015-10-19 16:34:42 CDT (-0400)
Last modified: 2015-10-19 21:08:38 CDT (-0400)
Viewed: 50 times, last viewed: 2016-10-23 04:55:29 CDT (-0400)
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