Observation 148103: Chroogomphus (Singer) O.K. Mill.
When: 2013-10-04
No herbarium specimen

Proposed Names

-16% (4)
Eye3
Recognized by sight: Identified by Dick Bishop (Leciman)
73% (3)
Eyes3
Recognized by sight: Orange and vinaceous coloring of basidiocarp, lacking in Gomphidius. Also sub-acute umbonate pilius.
55% (1)
Recognized by sight: Orange color of the stipe and the red-brown color of the cap put this in Chroogomphus. Given the location and the likely habitat C. ochraceus is the most likely species, but you can’t tell for sure without either microscopic or molecular analysis.
28% (1)
Recognized by sight: Would need microscopy to be sure. C. vinicolor has thick walled pleurocystidia (side of the gill).

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Collection location
By: Joe Cohen (Joseph D. Cohen)
2013-12-07 07:33:42 PST (-0800)

Nathan:
Thanks for your help and detailed comments.

You are correct that this was on display at a fungus fair (and a low-key one at that), and was not preserved. (Click on the Species list for more info. I just fixed the title of that list so that the link jumps to the right place.) Another problem was that my camera stopped working that day, so almost all the photos from this fair were taken with my iPhone.

I don’t think the collection location will help much, but just in case. These two mushrooms were collected by Dick. There’s a slight possibility he will remember the collection location. My best guess: either Pioneer Womans Grave or Still Creek Campground.

Chroogomphus vs. G. smithii
By: Nathan Wilson (nathan)
2013-12-07 04:23:49 PST (-0800)

Recently I’ve been actively researching this group. See project 162. The summary of characters from field guides for G. smithii is very helpful for the project as I just got the original description and it’s entirely in latin :(. In my view this specimen is pretty clearly a Chroogomphus. It is not staining grayish and it has distinct orange tones. C. ochraceus is a quite variable species and seems the most likely existing name. However, it is very possible that there are some undescribed species in this group.

It sounds like this was brought into a fungus fair, so I’m guessing it’s long gone and there aren’t any habitat notes, but if it still exists and it’s known more precise where it came from (ideally including the species of pine and any nearby Suillus) it would be great to get the dried specimen.

Chroogomphus?
By: Richard Bishop (Leciman)
2013-12-06 20:38:56 PST (-0800)

I would agree with Drew that the umbonate cap suggest that this might be Chroogomphus but the light colored gills and flesh seem to suggest Gomphidius. Also be aware that this picture was taken a day after it was collected and had been on display for several hours before the picture was taken. My recollection (which I admit is hazy)is that the stipe was pretty light colored and was not suggestive of Chroogomphus.

Guidebook characters for G. smithii
By: Joe Cohen (Joseph D. Cohen)
2013-10-12 18:07:16 PDT (-0700)

1. Arora, Mushrooms Demystified (2d ed. 1986), p. 482 (Gomphidius key entry 3):

“Stalk with little or no yellow at base; fruiting body medium-sized to fairly small”

Id. p. 483, Comment on G. subroseus:

“G. smithii can also be rather small, but shows little or no yellow in the base of the stalk and has a grayish to vinaceous-gray or brownish cap.”

2. Scates & Gibson, Field key to GOMPHIDIACEAE in the Pacific Northwest (1980, 2007)

Gomphidius smithii is another rather common species that will key out here. The size is like G. subroseus but there is less red in the cap and less yellow in the stem. It is also less pigmented in the cap and less yellow in the stem than G. glutinosus.”

3. Trudell & Ammirati, Mushrooms of the Pacific Northwest (2009)

“The rarely reported G. smithii has a grayish red cap, pinkish flesh in the lower stipe, and the stipe blackens when handled.”)

So looks to me like (1) size, (2) lack of yellow in stem base, and (3) cap color are consistent with all sources. I don’t see black bruising in the stem, but perhaps Dick Bishop (Leciman), who collected and IDed these was careful not to handle the stem, or any bruising faded by the time I took the photo.)

Dick Bishop (Leciman) adds:

As for choosing the ID it was a matter of it fitting better than other possibilities. Miller feels G. smithii is the same as G. glutinosus but G. smithii is generally regarded as smaller and less yellow in the base. I should also mention that Miller stated G. smithii occurs in California.

so…
By: Debbie Viess (amanitarita)
2013-10-12 07:32:12 PDT (-0700)

what are the definitive characters for this PNW Gomphidius sp.?

Created: 2013-10-11 20:56:51 PDT (-0700)
Last modified: 2013-12-07 04:08:27 PST (-0800)
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