When: 2011-01-23

Collection location: Marin City, California, USA [Click for map]

Who: Douglas Smith (douglas)

No specimen available

Found on wood chips under eucalyptus and live oak.

the first micro-shot is of the gill edge at 400x in KOH. The cheilocystidia are lageniform, on a non-fertile edge. Also seen was 4-spore basidia, with a few 2 and 3 spored basidia obs. No pleurocystidia were obs.

The second micro-shot is of the cap surface at 400x in KOH. The cap surface is an epithelium, with long narrow setae, with thick pigmented cell walls.

The third micro-shot is of spores from the gill at 1000x in KOH. The spores are ellipsoid, smooth, dark grey, with a clear germ pore. The apr. ave. size is 17 × 9 um, with a 2 um wide germ pore.

With the very large spores, and no pleurocystidia, this is rather clearly P. conopilus. The cap setae are a nice feature to have also.


Proposed Names

78% (2)
Recognized by sight
Used references: Funga Nordica
Based on microscopic features
84% (1)
Recognized by sight

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= Observer’s choice
= Current consensus


Add Comment
Psathyrella atrospora
By: Byrain
2012-11-22 22:40:37 PST (-0800)

With the large spores with an oblique rather then eccentric germ pore in the side view and non truncate apex + setae on the cap I think you really should consider Smith’s P. atrospora which was described from California. :)