Observation 62184: Galerina subclavata Kühner

When: 2010-11-06

Collection location: Bossy, Switzerland [Click for map]

Who: Douglas Smith (douglas)

Specimen available

Found in moss, under alder, oak, spruce.

The first micro-shot is of the gill edge at 400x in Meltzer’s. The cheilocystidia are tibiiform, long thin necks with capitate ends. No pleurocystidia were obs. Basidia are a mixture of 2-spored and 4-spored. Spores are non-dextrinoid.

The second micro-shot is of the cap surface at 400x in Meltzer’s. The cap surface is a cutis, with no gelatin, and lots of pileocystidia, which are also tibiiform.

The third micro-shot is of the stipe apex at 400x in KOH. The caulocystidia are also tibiiform, only obs. at the apex, not at the base.

The forth micro-shot is of the spores from the stipe apex at 1000x in KOH. The spores are ellipsoid, lightly roughened, no germ pore, no plage. The apr. ave. size is 14 × 7.5 um, but as you can even see by eye, there is a wide distribution of sizes.

The id here might be a little controversial, depending on how much you care about splitting Galerina details, at least in section Tubariopsis (and I’m sure you know who you are…). The cystidia, and the non-dextrinoid spores clearly put this into section Tubariopsis. Also with the fairly light stipes, and the spore shape and lightly roughened, this pushes it towards G. clavata. But then in most sources this gets split as with 4-spored basidia and apr. 11-13 um long spores you get G. clavata, and with 2-spored basidia and apr. 14-17 um long spores you get G. subclavata. But in Haan and Waylen they take it a little further, and say that also with pileocystidia you get G. subclavata, and laking pileocystidia you get G. clavata.

But here is the problem, these have pileocystidia, and at least some 4-spored basidia. The spores are apr. on ave. 14 um long, which kinda pushes it toward G. subclavata. So, with that and the pileocystidia, I’m calling these G. subclavata. But this kinda makes it an obs. of this species with some 4-spored basidia.

Also to add to this, there is the G. clavata of California, which is different than these at least, with no pileocystidia, and clearly 4-spored basidia. But also those have spores sizes of 9.5 um long, with usually less than a 1um spread on spore size. Where here the spore length is 14 um on ave, but there is about a 2-3 um width on the spore size. I still need to find a good collection of what is clearly G. clavata from Europe to compare, if this is enough of a difference.



Proposed Names

86% (1)
Eye3 Eyes3
Recognized by sight
Used references: Haan and Waylen, among others…
Based on microscopic features: As described in the text.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2011-01-12 07:27:48 -05 (-0500)
Last modified: 2011-01-12 07:50:05 -05 (-0500)
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