Observation 7373: Galerina sahleri (Quel) Kuhner
When: 2007-12-29
Herbarium specimen reported

Notes: Ok, I have a few observations now on this species, and I wasn’t sure what to do with these. Not a question that they don’t match anything, but that they match too many things in the Smith and Singer monograph, and I was going to wait until I has seen enough similar but different do start to tell which is what. But in the end everything I see similar, is just exactly like these.

I some private conversations with Prof. Gro Gulden he has taken a view to simplify the genus Galerina, and in that picture these best match G. sahleri from the Smith and Singer monograph. He has equated this to another name, but I don’t have the details on how and why there yet, so I’ve decide to site these obs. as the published Smith and Singer taxon for now, until a future publication will move that to a new name.

So, anyway, here they are, some G. sahleri from the Pt. Reyes Mycoblitz. These were found on moss on a live D. Fir tree, the others I’ve seen were on moss on dead D. Fir logs. These seem to be a Galerina species that like the moss on log habitat (compared to moss in grass habitat, or log with no moss habitat…).

The first photo here is of the guys, they are small, thin, not much going on. The tallest one there is ~2.5-3 cm long, most of these are 1-2 cm in length, the stipe width (much) less than a mm wide, and the cap only 3-8 mm wide. Not much evidence of a veil here.

The first micro-shot is of the cap surface in radial section at 400x in Meltzer’s. It is a cutis with no gelatin or pileocystidia.

The second micro-shot is of the cheilocystidia, which are lagentiform with blunt to sub-capitate ends. There weren’t any pleurocystidia obs., but in some places this was uncertain. Some of the gills were beatup and chewed on, and S & S mention that this can encourge the growth of some new cystidia, so that was uncertain. But on a few (3-4) gills is was clear there were no pleurocystidia obs.

The third micro-shot is of some basidia and spores attached from the inside cap surface at 400x in Meltzer’s. The spores are clearly dextrinoid, and I add this shot because you can see at a few place that the spores are attached in clumps of 4. So, this species has 4-spored basidia.

The forth micro-shot is of the spores from the stipe apex in KOH at 1000×. The spores here are mostly smooth, perhaps slightly marbled in some. But they all have a clear plage, and most have the exosporal covering pulled away at the plage, giving the spore “ears” or a skirted look. In many the exosporal covering also blisters at the apex, giving them also a “hood” with their skirt. This puts these into the section Calyptrata, and the thin, short stipes best fits G. sahleri. There is also the similar G. hypnorum, but that one the spores are smaller, and without the prominent “ears” on the spores.

A lot of fussiness about such tiny little brown jobs…

Proposed Names

57% (1)
Eye3 Eyes3
Based on microscopic features: Cap a cutis, cheilocystidia lageniform, no pleuro- or pileo-cystidia, spores pointed, dextrinoid, mostly smooth, but with a exosporal covering that pulls away at a plage, stipe short and thin.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2008-04-22 17:00:46 EDT (-0400)
Last modified: 2008-04-22 17:16:33 EDT (-0400)
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