Observation 87178: Entoloma trachysporum
When: 2012-01-28
Herbarium specimen reported
0 Sequences

Notes:
Collected at base of small tanoak, growing up against trunk. ID’d by Nhu Nguyen.

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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of course!
By: Nhu Nguyen (xerantheum)
2012-01-30 17:11:39 CST (-0600)

We do. I have collected something very similar at Point Reyes so a comparison is a must. Microscopy photos coming soon — someone is using the scope right now.

these long strings…
By: Debbie Viess (amanitarita)
2012-01-30 16:50:16 CST (-0600)

can be difficult to read. mo’ is bettah, esp. in the case of a novel genus to most. sadly, I’m thinking that we will NOT get to see those spores, at least from this sighting.

I DID think of you when I saw it, Christian, but those dastardly UCB folks snatched it right up! Guess that they know a cool and unusual fungus when they see it, too! ;)

Yep, see below
By: Christian (Christian Schwarz)
2012-01-30 16:38:17 CST (-0600)
Entocybe
By: Nhu Nguyen (xerantheum)
2012-01-30 16:13:58 CST (-0600)

From Baroni, Hofstetter, Largent, and Vilgalys. North American Fungi 6:1-19

“Entocybe — Differing from species of Entoloma sensu lato by obscurely angular basidiospores with 6-10 facets (angles) in polar view and undulate-pustulate or rounded pustulate surface ornamentation overall, similar to basidiospores of Rhodocybe, or ornamentation composed of broken interconnected ridges with isolated pustules interspersed.”

I put Entocybe nitidum up as another possible name…
By: Debbie Viess (amanitarita)
2012-01-30 12:32:33 CST (-0600)

but IF still lists Entoloma nitidum as the preferred name (could just be not quite as up to date as some of the MO Entoloma fans, though).

No particular macro characters
By: Irene Andersson (irenea)
2012-01-30 12:14:45 CST (-0600)

Obs 31231 belongs to Entocybe as well

the plot thickens…
By: Debbie Viess (amanitarita)
2012-01-30 12:02:30 CST (-0600)

so, what are the macro-morph characteristics for the genus Entocybe, if any?

If you choose Entocybe
By: Irene Andersson (irenea)
2012-01-30 11:51:34 CST (-0600)

as the name of the genus, E. nitidum belongs there too..

thanks Christian…
By: Debbie Viess (amanitarita)
2012-01-30 11:39:12 CST (-0600)

sounds as though spores (unless they actually run DNA on this one) would be the way to tell if it is your Entocybe genus.

I looked at Trudell’s photo of your proposed ID…
Entoloma trachyosporum as depicted (but not fully described) has a prominent umbo…these did not. It DID share the peculiar macro-morph of having a long stipe and a tiny-ish cap, though.

I would say that this mushroom needs more work to really nail that name.

Entoloma nitidum is as good of a place to start as any.

Dishin’
By: Christian (Christian Schwarz)
2012-01-30 11:28:32 CST (-0600)

So, Entoloma trachyospora/Rhodocybe trachyospora is a western species that sort of looks like E. nitidum, and which I think this would match better, but you’re right these are pretty young.

It’s pictured in Trudell and Ammirati’s book, so you can compare them there.

Entocybe is a genus recently established for some of the species in Entoloma with many angle (>8 or so), and there are some other features distinguishing it.

From MycoBank:
“Differing from species of Entoloma sensu lato by obscurely angular basidiospores with 6-10 facets (angles) in polar view and undulate-pustulate or rounded pustulate surface ornamentation overall, similar to basidiospores of Rhodocybe, or ornamentation composed of broken interconnected ridges with isolated pustules interspersed. Also differing from Entoloma sensu lato by RPB2, LSU, and mtSSU molecular sequences.”

Actually,
By: Irene Andersson (irenea)
2012-01-30 11:05:52 CST (-0600)

I’m not sure it’s Entoloma nitidum, and it doesn’t look the way I’m used to see it. You may have something in the west that is close, but not exactly the same.

please dish Christian…
By: Debbie Viess (amanitarita)
2012-01-30 10:39:26 CST (-0600)

about your unknown-to-me proposed ID for this very interesting and beautiful species.

hopefully spores aren’t the answer, since this guy appears to be way too young.

NOICE!
By: Matt Sherman (Shermanii)
2012-01-30 09:19:33 CST (-0600)

Very cool mushroom!

Major cool!
By: Martin Livezey (MLivezey)
2012-01-29 19:58:39 CST (-0600)

Created: 2012-01-29 19:57:41 CST (-0600)
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