Observation 23694: Pluteus petasatus (Fr.) Gillet
When: 2009-07-24
Herbarium specimen reported

Notes: Found this old thing by itself on a rotten alder log (log was small — only 2-3" diameter) in moist spruce forest by bog. Spore print flesh-brown. Gills look free(?!) No sign of a veil seen.

Can this be a Pluteus??

20090724.11

Updates: see photo of pleurocystidia and spore print. Spores are smooth and colorless (at 1000x), ~8 × 5.5 µm. Pleurocystidia are abundant, bowling-pin shaped with conspicuous horns at the tip, much like those of Pluteus cervinus.

Proposed Names

45% (2)
Recognized by sight: Looks a lot like a Pluteus to me growing on alder
58% (1)
Eye3 Eyes3
Used references: Key on MushroomExpert.com: http://www.mushroomexpert.com/pluteus.html
In dry weather it can turn firbrillose all over like this (according to the Polish site referred to by MushroomExpert.com).

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Keys out to Tricholomopsis in Aurora
By: Daniel B. Wheeler (Tuberale)
2009-07-31 18:20:29 PDT (-0700)

but not a Tricholomopsis species I’m familiar with. The white scales, stipe and gills distinquish it from anything else in the genus. Still, found directly growing from wood limits the possibilities…

Created: 2009-07-30 16:07:21 PDT (-0700)
Last modified: 2009-07-30 16:07:21 PDT (-0700)
Viewed: 63 times, last viewed: 2016-07-25 06:52:04 PDT (-0700)
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