Observation 33451: Galerina Earle

Growing on moss- The moss was on an old branch so yes it was on wood.

[admin – Sat Aug 14 01:58:21 +0000 2010]: Changed location name from ‘Bear Creek Trail, Briones Reservoir, Contra Costa County, California, USA’ to ‘Bear Creek Trail, Briones Reservoir, Contra Costa Co., California, USA’


Note the brownish spores on the moss below this cap.
Spores on the gill surface at 1000x in Melzer’s
Spores at 1000x in Melzer’s. To me they look thick walled and seem to be dextrinoid -they are reddish. 8-9µm x 5-6µm elliptical.
Gill cystidia at 1000x in Melzers.
Gill cystidia at 1000x in Melzers.

Proposed Names

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Recognized by sight: Brown spores, slightly umbonate cap

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The golden granular amorphous contents…
By: Christian (Christian Schwarz)
2010-02-12 15:17:37 EST (-0500)

of the cystidia are interesting. Do you see this often with Galerina, Doug?

Oooh, nice…
By: Douglas Smith (douglas)
2010-02-12 15:09:03 EST (-0500)

Good to see nice photos there, clearly dextrinoid. They are just dextrinoid, it has nothing to do with the ornamentation, Lepiota spores are dextrinoid and smooth. It is just that for little brown jobs that is good sign that it is Galerina. Although many Galerina are not dextrinoid, so your mileage may vary…

The cystidia are nice and club like, with the thickening ends that you see in the G. autumnalis like from around here (and not capitate, the cystidia ends are only slightly thickened, not spherical). Although the umbonate pileus that you don’t see, that is kinda weird…

The substrate
By: Paul Derbyshire (Twizzler)
2010-02-12 13:54:41 EST (-0500)

appears to be a cylindrical object covered in moss, quite likely a rotting log.

Cystidia and spores
By: Richard Sullivan (enchplant)
2010-02-12 09:17:31 EST (-0500)

Doug- Thanks for the comment. Spores seem to be dextrinoid. There were wonderful cystidia on the edge of the gills, which I show in Melzer’s. So you have the literature that might help here. All I have is Arora who says autumnalis has roughened spores – I presume that is what gives us the dextrinoid reaction. They seem to be thick walled. No mention of cystidia. So have at it!

Yes, Galerina.
By: Douglas Smith (douglas)
2010-02-11 19:40:20 EST (-0500)

Galerina, with the slightly striate margin, and the fibrous veil, probably one of the G. autumnalis types. A shot of spores and gill cystidia would help that, using Meltzer’s to see that the spores are dextrinoid. But the umbonate cap is funny, G. autumnalis around here isn’t umbonate.

Was the moss here on wood? G. autumnalis grows on wood, not moss. But can be seen with moss if the moss is on wood…

Created: 2010-02-11 19:02:58 EST (-0500)
Last modified: 2010-08-14 14:46:05 EDT (-0400)
Viewed: 145 times, last viewed: 2019-02-01 23:04:28 EST (-0500)
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