Observation 130963: Flammulaster erinaceellus (Peck) Watling

These were growing on an old log, probably a Madrone.
Caps were very small, the largest ~ 1.0 cm, dry with erect granules.
the stem also appeared dry with erect fibrils.
Gills were subdistant with 5-6 shorter gills between two that touched the stem(adnate).
Spore print was thin, but appeared to be rusty/reddish brown.
Spores were ~ 7.3-9.1 X 4.7-5.5 microns, smooth with a tiny germ pore.

Cheilocystidia was abundant, clustered and capitate, ~ 44-47 X 10-14 microns.
I included some phots of what I believe may be Pleurocystidia which was clavate and ~ 50-75 X 13-15 microns.
Checked several Keys and the Smith & Hessler tome with no success.


Spores in KOH @ 1000X.
Cheilocystidia in Congo Red @ 1000X.
Cheilocystidia in Congo Red @ 1000X.
Pleurocystidia in Congo Red @ 1000X.
Pleurocystidia in Congo Red @ 1000X.

Proposed Names

29% (1)
Recognized by sight
54% (1)
Recognized by sight: Squamulose/Granulose-Dry
Used references: The North American species of Pholiota, PG.56 pg 12
Based on microscopic features: This is the only species in section flavidula with cheilocystidia this large. However, Smith reports no pleurocystidia

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= Observer’s choice
= Current consensus


Add Comment
By: Rocky Houghtby
2013-03-28 19:58:12 CDT (-0400)

Mentions the germ pore in the description of the stirps. It is worded very poorly in the species description, I believe the intention was to imply a certain level of magnification was necessary.

I’m not sure which type of cystidia those clavate things are. Smith mentions that the cheilocystidia in this species rarely presents this way.

Great obs!

Thanks Rocky, F. erinaceellus does seem to be
By: Ron Pastorino (Ronpast)
2013-03-28 19:48:34 CDT (-0400)

the closest possibility.
I did see it in my original search but it mentions no germ pore for that species. I do believe you can see a faint small germ pore in these, especially when you look at the two central spores in the photo which are a little more in focus. The Cheilocystidia also is smaller than noted in the reference.
The elements I called Pleurocystidia may be Chrysocystidia, although I’m not clear if Smith actually distinguishes them separately in the descriptions for this group.
However, there a couple of other observations on MO from this area for F. erinaceellus that seem to be the same as my collection.

Created: 2013-03-28 17:46:04 CDT (-0400)
Last modified: 2013-03-28 18:55:46 CDT (-0400)
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