When: 2011-11-20

Collection location: Tahoe National Forest, California, USA [Click for map]

Who: Byrain

Specimen available

Growing along the side of a trail from mostly coniferous duff, oaks and maybe some other hardwoods were present as well. The taste and smell is mild & indistinct, the annulus doesn’t darken upon drying.

The spores are smooth with a germ pore, from 30 measurements the size range is (7) 7.5 – 9 (10) x 4 – 5 (5.5) μ, the average size is 8.48 × 4.9 μ, and the average Q is 1.74.
The pleurocystidia has thin walls which don’t yellow in KOH.


Spores on cap context
Mounted in KOH
1μ divisions
Mounted in KOH
1μ divisions
Cap context, pileipellis
Mounted in KOH

Proposed Names

28% (1)
Recognized by sight: Psathyrella subg. Pseudostropharia sect. Pseudostropharia, with annulus
Used references: North American Species of Psathyrella
Based on microscopic features: Smooth spores, pleurocystidia present

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Add Comment
P. longistriata
By: Byrain
2011-11-27 10:56:58 CST (+0800)

Looks like a good match, but I am not sure if I am interpreting the cystidia shapes correctly and I would expect a more translucent striate pileus margin for how wet that day was.