Observation 88205: Psathyrella (Fr.) Quél.

When: 2012-02-24

Collection location: Alpine Lake, Marin Co., California, USA [Click for map]

Who: Ron Pastorino (Ronpast)

No specimen available

These were growing on the ground/humus singly or in small clumps.
Caps up to 4.3 cm across.
Ringless stem was hollow and with some white fuzz at base.
Spore print was blackish and elliptical, ~ 8.0-8.5 X 5.1-6.1 microns with a germ pore.
Cheilocystidia was utriform and in the range of 35 X 14 microns.
Doesn’t seem to match any of the usual suspects?

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By: Byrain
2012-02-26 05:07:33 GMT (+0000)

…not getting anywhere with these either. My guess assuming there is no pleurocystidia is Psathyrella subgenus candolleana section candolleana.

The spores were mounted in KOH.
By: Ron Pastorino (Ronpast)
2012-02-25 22:19:37 GMT (+0000)

They did not seem to turn Hyaline in KOH.
I tried the A. Smith tome also but didn’t get anywhere. but it is difficult to navigate those keys.

By: Byrain
2012-02-25 19:08:05 GMT (+0000)

I was trying to key it out in Psathyrella Species of North America, I think maybe subgenus candolleana section candolleana. Though I need more info. What are the spores mounted in? Do they turn hyaline in KOH (Within 30 minutes or so?).

Also, the text says to look at P. proxima, but I can’t find that species anywhere excluding this which wants $30 to view it.

Edit: On P. proxima which has different sized spores. http://www.cybertruffle.org.uk/...

No Pleurocystidia that I could find.
By: Ron Pastorino (Ronpast)
2012-02-25 18:19:10 GMT (+0000)
By: Byrain
2012-02-25 18:00:34 GMT (+0000)

Was it present?

Created: 2012-02-25 16:10:34 GMT (+0000)
Last modified: 2012-02-25 23:41:13 GMT (+0000)
Viewed: 65 times, last viewed: 2018-02-16 06:12:20 GMT (+0000)
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