Observation 97004: Psathyrella (Fr.) Quél.
When: 2012-03-29
Who: Byrain
Herbarium specimen reported

Notes: Growing gregariously from wood chips and Casuarina equisetifolia litter along the side of a bike trail.

Mild taste/smell, 4-spored basidia observed, pleurocystidia absent.

Spore range = (15) 16 – 19 (21) x 8 – 10 µ
Average spore = 16.4 × 8.97 µ
Average Q = 1.83
15 spores measured.

This collection keys easily to Psathyrella thomii, but that species is described as “white when fresh but becoming dark brown in age” and with slightly wider spores that have a small bubble like germ pore.

Images

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Spores, 1000x, mounted in KOH
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Spores, 1000x, mounted in KOH
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Spores, 1000x, mounted in melzers
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Pileipellis, 1000x, mounted in KOH, 1 µ divisions

Proposed Names

85% (1)
Eye3 Eyes3
Recognized by sight
Used references: North American Species of Psathyrella
Based on microscopic features

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2012-06-10 18:18:14 PDT (-0700)
Last modified: 2012-06-24 13:04:33 PDT (-0700)
Viewed: 64 times, last viewed: 2016-11-27 07:04:42 PST (-0800)
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