Observation 64978: Setchelliogaster tenuipes
When: 2011-03-30
Herbarium specimen reported

Notes: growing on bare ground under ancient cypress grove.

Species Lists

Images

139353
139354
139355
139356
in situ
139378
hygrophanous cap.
139379
KOH spot.
139380
two spored (just sterigma remaining here) basidium.
139381
two basidia w/spores in lower right quadrant.
139382
spores 1000x in water.
lemon-shaped, thick-walled, finely warted,
15 × 10 microns.
139383
pilipellis.
139384
pilipellis.

Proposed Names

-31% (3)
Recognized by sight: secotioid cort? with dry, only partially opened hygrophanous cap, and short, dry stipe. gills distorted.
Based on microscopic features: spores brown in water, lemon-shaped, finely warted, 15 × 10 microns. I also found a few two-spored basidia.
Based on chemical features: smells faintly like a pencil eraser. Hygrophanous part of cap turned dark brown in KOH.
87% (4)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
so…
By: Debbie Viess (amanitarita)
2011-04-03 07:34:08 CST (+0800)

does the UCB herbarium need a fresher specimen of this? 100 years in a drawer tends to dry stuff out…;)

super!
By: Debbie Viess (amanitarita)
2011-04-03 07:31:36 CST (+0800)

guess that it is MR w/the eucalypts, then? ;)

I wasn’t wedded to any concept at all Christian, other than it being a secotioid something, and Cort was the closest that I could come up with from my experience here in N. America.

In fact, the Australian Descolea, the agaric forerunner of the secotioid Setchelliogaster, IS related to some of the Corts, at least according to this paper:

http://www.amjbot.org/cgi/content/full/88/12/2168

Thanks for recognizing it, Else. It looks like a great fit.

Nice,
By: Michael W (Michael Wallace)
2011-04-02 02:46:38 CST (+0800)

Great find Debbie, a secotioid relative of Descolea, compare with this observation.
http://mushroomobserver.org/48228?q=410v

That’s what I’m talking about…
By: Christian (Christian Schwarz)
2011-04-02 02:08:12 CST (+0800)

Genera you’ve never heard of, rather than ramming a Telamonia into a gastroid concept…
Looks pretty good:

http://tinyurl.com/3cdfwpo

Nice find!

Setchelliogaster
By: else
2011-04-02 01:55:30 CST (+0800)

I don’t think that this is a Cortinarius species, but a Setchelliogaster.
Setchelliogaster tenuipes has 2-spored basidia.
it should have cheilocystidia with a little ball at the tip ( like Conocybe cystidia).
Originally described from the Eucalyptus grove on the Berkeley campus by Setchell in 1907.

Spores
By: Christian (Christian Schwarz)
2011-04-02 00:47:15 CST (+0800)

I don’t think I would call those coarsely warted, but rather finely so, which is actually more supportive of Telamonia as opposed to the other Cortinarius subgenera with often-stronger ornamentation.

Funny haha? No… just odd. With weirdos like this, I always feel I should be especially careful to consider other possibilites, but so far, this ID looks really good.

microscopy added.
By: Debbie Viess (amanitarita)
2011-04-02 00:37:22 CST (+0800)
graveyard gastroid
By: Debbie Viess (amanitarita)
2011-04-01 23:48:09 CST (+0800)

or rather secotioid cort.

well no doubt there was SOME kinda MR tree root buried in that dirt, since there was also a Lactarius growing nearby.

what would it be otherwise??!!! what do you find “funny” about this sighting?

funny ha ha? or…

As long as there was something mycorrhizal…
By: Christian (Christian Schwarz)
2011-04-01 10:29:50 CST (+0800)
all sorts of trees…
By: Debbie Viess (amanitarita)
2011-04-01 09:38:25 CST (+0800)

I would have to go back and check.

Live oak, pine, eucalyptus, etc. etc. Mostly all planted.

What mycorrhizal trees were around?
By: Christian (Christian Schwarz)
2011-04-01 09:34:19 CST (+0800)

It looks pretty good for a secotioid Telamonia, and your micro-details certainly seem to confirm that, but something about it bugs me…

Created: 2011-04-01 08:44:45 CST (+0800)
Last modified: 2011-04-26 01:14:51 CST (+0800)
Viewed: 366 times, last viewed: 2016-10-25 05:55:49 CST (+0800)
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