Observation 34431: Galerina Earle

When: 2010-01-31

Collection location: Point Reyes National Seashore, Marin Co., California, USA [Click for map]

Who: Douglas Smith (douglas)

Specimen available

Found under red alder, on alder duff and the little alder “cones”.

First micro-shot is of the gill edge at 400x in Meltzer’s. Here the cheilocystidia are numerous and obvious, fusoid-ventricose with blunt apecies. Also obs. were plenty of pleurocystidia, also numerous and obvious. The spores are dextrinoid, and come from 4-spored basidia. In other obs. the cap was a cutis with no gelatin or pileocystidia.

The second micro-shot is of the stipe apex at 1000x in KOH. Here are spores, they are ellipsoid, pointed, roughened, with a plage on the slight super-hilar depression. The spores are apr. 9 um long.

So, as small brown jobs with roughened dextrinoid spores, these are Galerina. Growth on alder duff is kinda a weird habitat for such. Also with the numerous pleurocystidia, this makes these a cousin to the common G. autumnalis/marginata. Also common is the stipe covered in fine white hyphae, so this guy is in the section Naucoriopsis (which means Naucoria shaped really, not like Naucoria in other ways, except there are more like Naucoria in the growth on alder). They are different from G. autumnalis/marginata in that habitat, color, presence of veil, cystidia shape, and spore size and shape.

Since growth in alder duff was strange enough, and the light yellow-tan colors of these guys, it looks like these are probably a new species of Galerina. Although other species have been listed as found on alder wood from time to time. Looking through a few sources, no similar species came up.

Anyway, neat find, and I didn’t expect to see a Galerina in the habitat, but there it was.



Proposed Names

57% (1)
Eye3 Eyes3
Recognized by sight
Used references
Based on microscopic features: Spores ellipsoid, roughened, dextrinoid, tan in KOH, with a plage.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2010-03-01 11:43:05 CST (-0500)
Last modified: 2010-03-01 11:43:05 CST (-0500)
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