Observation 121615: Psathyrella candolleana (Fr.) Maire
When: 2012-12-19
Who: Byrain

Notes: Found under oaks and other hardwoods off the side of the trail, the taste is mealy/farinaceous.

Spore range = 8 – 10 × 4 – 5 μm
Average spore = 8.85 × 4.4 μ
Q range = 1.6 – 2.5
Average Q = 2.04
20 spores measured.

Cheilocystidia range = 33 – 52 × 9 – 14 (15) μ
Average cheilocsytidia = 41.2 × 10.7 μ
20 cheilocystidia measured.

Caulocystidia range = (15) 26 – 67 (76) x (5) 8 – 13 (14) μ
Average caulocystidia = 41.7 × 9.95 μ
20 caulocystidia measured.

4-spored basidia measured = 30×8 μ
Pleurocystidia not observed, clamps present.

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

Comments

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Dense outer veil.
By: Byrain
2012-12-29 23:12:49 PST (-0800)

This is a variety of P. candolleana with a dense outer veil (On the cap surface), the variety commonly found in urban areas in California has a rudimentary outer veil. The type variety should have an absent outer veil and according to Smith this one is rarer in North America.

For comparison with the variety with a rudimentary outer veil see obs 115140, 77968, & 64612. It may be possible to further distinguish these by the taste and the average Q-value, the spores in this obs are not as truncate and are slightly darker when first mounted in KOH

Created: 2012-12-29 23:06:22 PST (-0800)
Last modified: 2012-12-29 23:22:26 PST (-0800)
Viewed: 67 times, last viewed: 2016-10-27 18:42:51 PDT (-0700)
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