Observation 143262: Psathyrella (Fr.) Quél.

When: 2013-08-19

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

Who: George Riner (mycogeo)

No specimen available


growing in a planter box with marigolds.

cystidia are few, pear-shaped with rounded ends; more frequent on edge of gill than on face of gill.

P. bipellis (http://www.mushroomexpert.com/psathyrella_bipellis.html) is a close match, but the caps didn’t have a pinkish color and these stems are really thin.

P. conopilus (http://www.mushroomexpert.com/parasola_conopilus.html) also close, stems were shorter but then these were growing under a half-covered lid;

Proposed Names

57% (1)
Eye3 Eyes3
Recognized by sight: round caps, about 1 cm across; stem 1-2 mm in diameter.
Based on microscopic features: spores 6-7 × 11-14 μ; dark deposit color

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Byrain
2013-08-19 15:09:35 CDT (-0500)

One of dozens of species in subgenus Psathyrella, see Smith’s book. Pleurocystidia are present? Did you measure the cystidia? Did you check for long thick-walled setae on the pileipellis that Parasola conopilus should have? Or in CA Psathyrella atrospora is rather common, but this doesn’t really look like them.

P. conopilus a better match
By: George Riner (mycogeo)
2013-08-19 15:02:17 CDT (-0500)

looking around MO, it seems P. conopilus is a visually closer match.

Created: 2013-08-19 14:54:57 CDT (-0500)
Last modified: 2018-01-03 09:43:51 CST (-0600)
Viewed: 18 times, last viewed: 2017-06-16 10:30:00 CDT (-0500)
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