Observation 52537: Conocybe mesospora Kühner ex Watling

When: 2010-08-22

Collection location: Thoiry, France [Click for map]

Who: Douglas Smith (douglas)

Specimen available

Found under spruce and fir, in the needle duff, with some moss…

The first micro-shot is of the gill edge at 400x in Meltzer’s. The cheilocystidia are lecythiform, so clearly a Conocybe. No pleurocystidia were obs, and the basidia are 4-spored.

The second micro-shot is of a pileus section at 400x in Meltzer’s. Just showing this one to show off how thin a section I got here – boo-ya! Anyway, the cap is hymeniform, with globose elements, no gelatin, no pileocystidia.

The third micro-shot is of the stipe surface near the apex at 400x in KOH. The caulocystidia are mostly lecythiform here, with some globose elements.

The fourth micro-shot is of spores from the stipe surface at 1000x in KOH. The spores are ellipsoid, smooth, with a germ pore. The apr. size is 9.5 × 5.5 um.

Putting this together, with 4-spored basidia, the lecythiform caulocystidia and the spore size, these seem to be Conocybe mesospora.

Proposed Names

86% (1)
Eye3 Eyes3
Recognized by sight
Used references: Flora Agaricina Neerlandica vol. 6
Based on microscopic features: As described in text.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2010-09-11 10:58:55 MST (-0700)
Last modified: 2010-09-11 11:05:09 MST (-0700)
Viewed: 31 times, last viewed: 2017-11-02 12:49:25 MST (-0700)
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