Observation 60481: Stropharia albivelata (Murrill) Norvell & Redhead


spores and chrysocystidia in Meltzers.
spores and chrysocystidia in Meltzers.
spores and chrysocystidia in Meltzers.
spores and chrysocystidia in Meltzers.

Proposed Names

55% (4)
Recognized by sight
72% (4)
Eye3 Eyes3
Recognized by sight: pale pinkish brown, viscid cap, prominant, persistant,membranous annulus, striate on upper surface, yellow staining on stipe base, cinnamon brown spore drop. occurs in California in the fall with conifer debris.
Used references: “The North American Species of Pholiota”, but Smithh and Hessler, MDM, Arora.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Debbie Viess (amanitarita)
2010-12-10 11:17:44 PST (-0800)

made the field yellow. I have already taken your tungsten camera setting suggestion, and it has helped in other cases where the background color isn’t yellow already.

By: Alan Rockefeller (Alan Rockefeller)
2010-12-09 23:30:02 PST (-0800)

Did you mount these in KOH or water?

If you set your white balance to tungsten your micrographs will not be excessively yellow.

micrographs added
By: Debbie Viess (amanitarita)
2010-12-09 19:51:05 PST (-0800)

spores 9 × 5, cinnomon brown, smooth, small germ pore, match spore drawings for shape in Hesler and Smith.
Chrysocystidia abundant on gills: some rounded, some with a small projection (nipple) at end.

the photos of inuncta look grossly similar…
By: Debbie Viess (amanitarita)
2010-12-09 14:33:55 PST (-0800)

but that is a European species that does not occur here in North America.

Stropharia (former Pholiota) albivelata looks to be a better match.

Perhaps Stropharia inuncta?
By: Angelos Papadimitriou (Aggelos(Xanthi))
2010-12-09 13:56:43 PST (-0800)

After the latest comments, I realized that my initial vote for Psathyrella longistriata (which, by the way, I have never seen) was rather hasty, so I’ve changed it to “not likely”. I think it’s almost certain that what we have here is a Stropharia, as wisely suggested by darv. A good possibility for the species could be Stropharia inuncta, so it might be a good idea, Debbie, if you’d focus on it before looking at any other possibilities. Have a look at this pic at http://users.skynet.be/...; two of the mushrooms in the back have rings which seem quite like the ones on your mushrooms, though much more shrunk.

could these be agrocybes?
By: Jimmie Veitch (jimmiev)
2010-12-09 09:45:06 PST (-0800)

Agrocybe erebia and Agrocybe acericola have also these sturdy rings I think

By: Debbie Viess (amanitarita)
2010-12-09 08:09:03 PST (-0800)

can you tell the dark-spored shrooms are not my group? ;)

perhaps some of the specialists can comment here…

I dug these outta the trash (they were already looking peaked yesterday when I tossed ’em) and will scope some of the remains today.

Indeed the stipe is much less fragile than I assumed at first glance, so Stropharia is a possibility.

This seems
By: Britney Ramsey (Riverdweller)
2010-12-08 12:27:12 PST (-0800)

to differ in some ways from the Psathyrella longistriata that I have seen. The upper side of the ring being colored the same as the cap and the margin that doesn’t appear whiter. Is this an example of many variations for one species?

Created: 2010-12-08 10:40:01 PST (-0800)
Last modified: 2013-12-01 13:05:15 PST (-0800)
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