Observation 45956: Psathyrella subgenus Homophron (Site ID) (Homophron)

When: 2010-05-25

Collection location: Bartow Co., Georgia, USA [Click for map]

Who: AmatoxinApocalypse (AmatoxinApocalypse)

Specimen available

Nice color on these.

[admin – Sat Aug 14 01:58:13 +0000 2010]: Changed location name from ‘Bartow County, Georgia’ to ‘Bartow Co., Georgia, USA’


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By: Irene Andersson (irenea)
2010-05-31 08:17:39 CDT (-0400)

Psathyrella spadicea was described from Europe, but is probably a cosmopolitan, and an example of a large and not very brittle Psathyrella.

I don’t know what this obs is – can’t even guess a species.

By: AmatoxinApocalypse (AmatoxinApocalypse)
2010-05-30 14:45:25 CDT (-0400)

Is Psathyrella spadicea a west coast, USA species? I noticed the only two observation on here are from the west coast, I cannot find good info on.

The spores are more of a cinnamon red/rust/brown color, also note the cobwebby cortina on the lamellae, I found these at the base of a tree.

By: Irene Andersson (irenea)
2010-05-30 13:58:04 CDT (-0400)

I was ruling out Cortinarius mainly because of the striate, cystidious stem, but also the deep purple spores.
I don’t know many Psathyrella species, but it reminds a bit of this (spadicea is one rather sturdy species that usually grows in small clusters near the stem base of trees): http://mushroomobserver.org/30018

I do have a scope, a rather old one, that can manage 1000x with oil immersion (which I use for measuring smaller details), but I get better pictures (sharper and better depth of field) at 400×. I’m no expert on this, so I can’t give any advice about microscopes or what you have in your market, but I beleive that it’s possible to get an acceptable new one for, say, 500 dollars..?

By: AmatoxinApocalypse (AmatoxinApocalypse)
2010-05-29 19:10:28 CDT (-0400)

I did not think Psathyrella because of how large they were, how meaty the pilei and stipe were, also the spore print appeared to have a light cinnamon red/brown red hue to it.

By: AmatoxinApocalypse (AmatoxinApocalypse)
2010-05-29 19:01:53 CDT (-0400)

I wish it was possible to get some micropics of the spores, am working on getting a scope.

Do you have a scope, if so what make/model would you recommend?

Is it possible
By: Irene Andersson (irenea)
2010-05-28 05:28:37 CDT (-0400)

to get a micropicture of spores?