When: 2011-10-29

Collection location: Yosemite National Park, California, USA [Click for map]

Who: Debbie Viess (amanitarita)

Specimen available

part of Yosemite Fungal Survey.
in mixed conifer woods, 6,200’.

Species Lists


note odd veil-like material on cap!

Proposed Names

57% (1)
Recognized by sight: reddish-rusty brown spores, abrupt bulb. context cream-sl. yellow
Based on chemical features: KOH: neg in context, yellow-orange on cap.

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

= Observer’s choice
= Current consensus


Add Comment
did Nhu run the DNA on this specimen?
By: Debbie Viess (amanitarita)
2013-01-14 10:52:45 PST (-0800)

did you examine the microscopy for this fruit body?

In other words, how did you get from “pretty sure” to “I’d call it that,” just from a photo?

Its superficial resemblance to orichalceus f. luteifolius (reddish rusty brown spores, yellowish cap w/veil remnants, yellow gills when young, abrupt bulb, lilac tones) is probably not enough for an absolute ID determination, especially since the KOH rxns. were NOT in line with that species.

What, no cryptic species in that group of corts??!

Patience will resolve this, in lieu of more concrete evidence for this ID.

If you have better evidence, please let us know.

Pretty sure
By: Dimitar Bojantchev (dimitar)
2012-05-09 11:28:37 PDT (-0700)

this one is the same as this one — obs 87510. In older specimen the KOH might be slow to develop or the reaction weak. I also think that my older collectiomn did not react with KOH.

observation 87510

By: Debbie Viess (amanitarita)
2012-05-09 08:00:44 PDT (-0700)

the KOH rxns. for this cort are identical to those seen in xanthodryophilus, althought the host tree is obviously different.

I can almost see a hint of lilac at the R stipe apex, too, but perhaps that’s just my imagination.

KOH rxns. were identical in both collections.
By: Debbie Viess (amanitarita)
2011-11-03 10:45:37 PDT (-0700)
Could be, but…
By: Dimitar Bojantchev (dimitar)
2011-11-03 10:33:39 PDT (-0700)

a bit of KOH would have helped. See, we have another similar one with pinkish KOH. David Rust I think collected it too – some greenish tinges. Ultimately it is good that we collect these carefully as we need to make sense of them.

Later in the evening I will drop some reference photos to what I have in mind. Got to run now.


same species as this observation here:
By: Debbie Viess (amanitarita)
2011-11-03 10:26:08 PDT (-0700)
in the time it took you to post your many messages here and there…
By: Debbie Viess (amanitarita)
2011-11-03 10:14:05 PDT (-0700)

you could have easily put up that cort sighting.

its quick. it’s easy. its useful to others.

please save your public ire for private; it doesn’t faze me, but it does frighten the horses and children.

Here we go again…
By: Dimitar Bojantchev (dimitar)
2011-11-03 09:49:16 PDT (-0700)

I have a better shot of this species even, from this year (2011-10-16) – with more of that thick cortina.

Dear Debbie, I do not have to be lectured by you on how to conduct the YFS survey. I will upload and deopsit in UC all my INTERESTING data WHEN I HAVE TIME, which will be at the end of the season. All important parties are aware of that arrangement. I have to maintain very busy working/earning schedule unlike some and I do not have the luxury of time to create an observation every time I have to comment on something.

My suggestion was general – it would make it much easier for me to comment on sightings if I can easily upload a shot of my own for comparison and I believe it would be of general interest to all – the technical implementation of that should not be very hard at all, as I also build web sites.

Jeez, you managed to irritate me at the start of the day.. Thank you.


just post your photos to a new sighting here, and link to them.
By: Debbie Viess (amanitarita)
2011-11-03 09:37:51 PDT (-0700)

then your collections become part of this searchable database, too. If you found it up in Yosemite, it’s important that you do so anyway, to contribute to the cooperative YFS database sightings.

yes, as I mentioned, it does look a lot like C. xanthodryophilus, but of course the tree associate is wrong. Looks a bit different in hand as well.

I know this one, that’s all I have to say.
By: Dimitar Bojantchev (dimitar)
2011-11-03 09:29:19 PDT (-0700)

I know this one too — see the attached photos — in fact when I collected it last year in Yosemite (2010-10-14) I had a little scare, as it looked somewhat like the C. xanthodryophilus that we described from oaks — but no, it is something else. We took dna too, but I forget where it fit exactly. It had large spores a I remember correctly, but not as large as C. elegantior.

It would be great if MO permitted me to easily drop/upload comparison photos in here.

Here is a photo from the MushroomTalk attachments that I sent a few minutes ago.

By: Jimmie Veitch (jimmiev)
2011-11-02 16:32:50 PDT (-0700)

what a cool cort!

Created: 2011-11-02 14:16:06 PDT (-0700)
Last modified: 2013-12-03 10:25:25 PST (-0800)
Viewed: 185 times, last viewed: 2019-04-23 22:53:44 PDT (-0700)
Show Log