Observation 83377: Psathyrella longistriata (Murrill) A.H. Sm.
When: 2011-11-20
Who: Byrain
Herbarium specimen reported

Notes: 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.

Images

185282
185283
185284
Spores on cap context
1000x
Mounted in KOH
1μ divisions
185285
185286
185287
Pileipellis
1000x
Mounted in KOH
1μ divisions
185288
Cap context, pileipellis
400x
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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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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P. longistriata
By: Byrain
2011-11-26 21:56:58 EST (-0500)

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.

Created: 2011-11-26 18:52:07 EST (-0500)
Last modified: 2012-06-27 00:37:18 EDT (-0400)
Viewed: 87 times, last viewed: 2016-12-24 12:30:20 EST (-0500)
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