Observation 7385: Xeromphalina Kühner & Maire
When: 2008-02-02
Herbarium specimen reported

Notes: An unknown species here, that was grabbed while looking for Galerina and maybe Gynmopilus. But it turns out these are neither.

The first micro-shot here is of the cap surface at 400x in Meltzer’s. Here the cap is covered in inflated deeply pigmented cells. But these are on a layer of radial hyphae, so the question is this a cutis or a epithelium…

The second micro-shot here is of a gill edge in Meltzer’s at 400×. Here it is a fertile edge, with no cystidia, it turns out there are no cystidia anywhere here. Also the spores are amyloid.

The third micro-shot here is of some spores from the stipe apex in KOH at 1000×. The spores are hyaline, smooth and subglobose.

So, not sure here, a white spored little brown job, with dark bumpy cells on the cap. With the brown colors, and white amyloid spored this suggests Xerophilina, but I’m not sure.

I’ve seen another one similar to this, but with a different cap surface, and the spores are more cylindrical. But I found very small beatup caps, and the photos aren’t quite worth posting.

Proposed Names

61% (2)
Eye3 Eyes3
Recognized by sight: It’s not clear how big there are from the photo, but they strike me as Xeromphalinas. (I assume that Xerophilina was a typo.)
11% (2)
Based on microscopic features: Spores look ellipsoid approaching lacrymoid. Subglobose is defined as ‘almost’ round. The amyloid reaction is very light and could be diffraction from oil drops within since part of every spore appear clear. This would lead to Flammulina as a possibility.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Spores were really amyloid
By: Douglas Smith (douglas)
2008-04-28 10:34:10 CDT (-0400)

I afraid that the spores were really amyloid here. Even if this doesn’t come through in the photo so well. So, these can’t really be Flammulina.

does not look like F. velutipes
By: Luke Bayler (Matango)
2008-04-28 00:18:55 CDT (-0400)

What was it growing on? I’ve looked at a couple F. velutipes up here lately and the spores on your specimen do not look like velutipes to me.

Created: 2008-04-24 17:56:50 CDT (-0400)
Last modified: 2008-04-24 18:14:54 CDT (-0400)
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