Observation 100875: Agaricales sensu lato
When: 2012-07-16
No herbarium specimen

Notes: I found this on my front lawn today by a maple tree and not far from a birch tree. The little piece of material (volval?) found in multiple pictures is all I found when digging it out.

-Its been dry here, except yesterday.
-Taste is one of those few mushrooms I’ve found w/a natural salty/umami flavor.
-Odor is that of scallops (yes, from the sea) and seaweed.

Proposed Names

-4% (2)
Recognized by sight: Stipe, cap, spores, gills.
28% (1)
Eyes3
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Voucher collection.
By: Daniel B. Wheeler (Tuberale)
2012-07-19 16:33:27 CDT (-0400)

A voucher collection is a detailed collection, including photos if possible, of a suspected species novum (new species). It should include date, location (as specific as possible – GPS if available), nearby tree and shrub species, soil type or conditions, possible substrate (what is it growing from or with), odor, cap appearance and size fresh (and after dehydration), stipe size, length, color, appearance, both fresh and after dehydration; cross-sections of cap and stipe if possible, and digging the specimen(s) to include how deep the rooting structure is here. Note also any staining/bruising/latex seen, both fresh and after a minute or two. Dehydrated specimens should be added to either a local herbarium with an accession number, or provided to a reputable scientific herbarium for long-term accession. Include notation of any other quirks or oddities about this particular fungus that you can see or determine.

Finding species novum is not at all unusual. I know the above are problematic for some people. Just try to provide as much information as possible. What may not seem important now may be very important in 20-50-150 years.

new species?
By: Sam.Schaperow (Sam.Schaperow)
2012-07-19 15:06:52 CDT (-0400)

On the off-chance I discover a new (undocumented) species, what exactly should I do?

Collybia? Melanoleuca? Rhodocollybia?
By: Daniel B. Wheeler (Tuberale)
2012-07-19 13:04:54 CDT (-0400)

All above have species with rooting traits. Few have white caps. Melanoleuca has the crowded gills I would describe here. Collybia oregonensis has a strong odor, but not at all like scallops.

Always the chance of a species novum, too, but would require a voucher collection for study and comparison.

rooting?
By: Sam.Schaperow (Sam.Schaperow)
2012-07-17 12:53:01 CDT (-0400)

I did dig down a bit, though it is possible it rooted further down.

The material I mentioned could have been volval, but could have also been something else (not sure what offhand, but definitely could be other material from the mushroom that got stuck in the dirt as it mushroomed).

The scent is very distinctive, and should be helpful w/the ID, no???

From the taste & spit, this is a very good choice edible, however that method unfortunately does not result in any safety guarantees. Too bad I’ll have to discard it. :( Oh, no other specimens, but maybe some day more will appear there.

I agree Dmitriy.
By: Dave W (Dave W)
2012-07-17 07:58:16 CDT (-0400)

Sam’s comment about the piece of material possibly being from a volva just caused me to think along the lines of Amanita. But this does look like a Trich.

maybe
By: Dmitriy Bochkov (convallaria)
2012-07-17 07:39:30 CDT (-0400)

something tricholomatoid rather than Amanita? Calocybe leucocephala, which has a rooting stipe like here, for example?

IMO, these are good pics of an interesting mushroom.
By: Dave W (Dave W)
2012-07-17 00:24:03 CDT (-0400)

I had considered proposing “Amanita sect. Vaginatae”, based upon the report that basal volval material had been excavated when the mushroom was harvested. Some of these types of amanitas have basal volval sac that is very difficult to preserve as part of the collection because the sac is buried. But the notched/attached gills sorta put me off making this proposal. Ironically, this is a result of the quality of the photo!… and my own preconceived notion that amanitas have free gills.

I just reviewed the Amanita website, and I see that some section Vaginatae types exhibit the type of gill attachment (notched/attached with decurrent thread) seen in this obs.

http://www.amanitaceae.org/?section+Vaginatae

If another specimen can be harvested with at least some of the basal volval material intact, I think this would amount to an intersting find.

One trait that seems to be missing (in this obs) from the A. sect. Vaginatae scenario is a radially lined cap margin.

stipe
By: Sam.Schaperow (SamSchaperow)
2012-07-16 22:31:13 CDT (-0400)

stipe is particularly flexible

Created: 2012-07-16 21:21:53 CDT (-0400)
Last modified: 2013-11-08 13:41:21 CST (-0500)
Viewed: 199 times, last viewed: 2016-10-22 20:43:13 CDT (-0400)
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