Observation 136819: Amanita Pers.
When: 2013-06-17
Collection location: Alva, Florida, USA [Click for map]

Notes: no dried specimen

Images

338952
338953
338954
339206
raw unedited photos (no top of cap shots… sorry everyone)
339207
raw unedited photos (no top of cap shots… sorry everyone)

Proposed Names

16% (6)
Eyes3
Recognized by sight
10% (7)
Eye3
Recognized by sight
1% (3)
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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Looks like the one I just found
By: Justin (Tmethyl)
2013-06-19 15:18:03 CDT (-0400)
No specimen :(
By: Benjamin Dion (MykesLogos)
2013-06-19 15:15:22 CDT (-0400)

I must have left it out there… these were the last photos in my album for that day and I remember being late to work. I had a tackle box full of mushrooms and a backpack full of wild citrus, bay leaves, and sticks/branches with polypores on them… so I guess I just left it behind for some reason!?

I know exactly where I found this so I can just go find more this weekend or something….

Cheers

At this stage
By: Christian (Christian Schwarz)
2013-06-19 14:59:10 CDT (-0400)

Agaricus fruitbodies have a high proportion of hyaline spores.
Even mature Agaricus typically have some immature and unpigmented spores, so one with the PV fully intact like this would probably have lots of hyaline (Amanita-like) spores.

Other micro features would be much more useful (rubble on gill edges, gill trama as mentioned, clamp connections, RET can probably add a dozen others).

if an amanita…
By: Debbie Viess (amanitarita)
2013-06-19 14:53:08 CDT (-0400)

then the spores would not be brown, regardless of gill color.

easy enough to check, if it is producing spores.

Either Rod or I or Christian would be glad to scope this critter and post the results on MO.

Amanita microlepis, confirmed from Georgia (just next door) has cafe au lait gills, but this specimen does not show warts on the cap…did it in hand? the volva is also odd, as Rod mentioned.

You have stirred the pot, Mykes!

more work is needed for even a confirmed generic ID.

Looks to me like there’s a hollow chamber…
By: Dave W (Dave W)
2013-06-19 14:50:42 CDT (-0400)

running through the length of the interior of the stipe. I believe this points away from Agaricus, and toward Amanita.

In Europe, there are several species of Amanita subsect. Solitariae… [EDIT]
By: R. E. Tulloss (ret)
2013-06-19 14:34:03 CDT (-0400)

that occasionally are found with pinkish or reddish or brownish-pinkish (as here) or similarly colored gills. Such specimens often show reddish bruising/staining in the flesh of the mushroom. It seems to me that these specimens may be under “attack” by (an) (as yet) unidentified life form(s).

Maybe that is what is going on here, as has been suggested below.

I’d be glad to take a look to see if I can tell what the mushroom is.

Frankly, the volva has me puzzled if this is a Lepidella. There seems to be a low membranous rim running around the top of the bulb, and the volva seems unusually fibrous-membranous on the cap. At least I can tell you if this thing is an Amanita…unless the hypothetical parasite/disease agent has altered the internal tissues of the stem and gills.

[I have seen the latter in the original material of both A. aminoaliphatica and A. alexandri…both of which were previously named species under attack and exhibiting the “cheese odor” syndrome.]

Very best,

Rod

check this out too
By: Benjamin Dion (MykesLogos)
2013-06-19 14:32:25 CDT (-0400)
if…
By: Richard and Danielle Kneal (bloodworm)
2013-06-19 14:24:21 CDT (-0400)

he finds the specimen…
looking at it should be sufficient.
my guess is that the gill color would have changed to brown by now.

Brown gills
By: Christian (Christian Schwarz)
2013-06-19 14:22:31 CDT (-0400)

Not totally unprecedented.

Amanita gill color (like Amanita gill attachment) runs
a wide range of expression.

See observation 11560 for some discussion.

Mykes, if you find the specimen, you can find my mailing address on my profile page.

Cheers!

wow y’all like this, huh?
By: Benjamin Dion (MykesLogos)
2013-06-19 14:14:37 CDT (-0400)

I don’t think I took a spore print but I may have kept the specimen… if so, it’s dry, vacuum-sealed, and in the fridge…

I have a serious backup on labeling my specimens atm… I have to seal and add prints to this hunt’s specimens now, so if I find it I’ll be sure to get it to someone…

I don’t own a scope, but I could use the ones at school… just haven’t asked yet been busy.

cheers

Very interesting specimen.
By: Daniel B. Wheeler (Tuberale)
2013-06-19 13:36:21 CDT (-0400)

The brown gills are bewildering. Gill attachment looks partially attached to the stipe. Tapering base looks like Amanita, but the rest doesn’t.

Could this be parasitized?

let’s do the work and prove it…
By: Debbie Viess (amanitarita)
2013-06-19 13:25:47 CDT (-0400)

one way or another.

I’m pretty sure this is an Amanita
By: Christian (Christian Schwarz)
2013-06-19 13:08:39 CDT (-0400)

There are difficult to see UV remnants on the cap in the last photo.

The gills are darkish, but not in any of the ways we’d expect to see for an Agaricus. They are not spore-colored (due to the early stage of cap expansion with the PV not even broken yet), nor are they bright pink as in the Agaricus campestris group (which would be extremely unusual given the stature and habitat shown here), nor are they pale grayish-tan as in Agaricus section Arvenses.

The tall stature with a really truly bulbous stipe base is rare in Agaricus, and along with the gestalt texture of the PV, and strong fringe of pale ‘rubble’ cells visible along the edges of the gills, the signs point to Amanita.

I’m leaning towards Agaricus, myself.
By: Debbie Viess (amanitarita)
2013-06-19 12:11:30 CDT (-0400)

Spore print? Also, a thin gill section (divergent trama) would tell you quickly whether you have an amanita or not. Even just throwing a gill under the scope, smash mount, will tell you the spore color.

Got scope access?

This is a strange one
By: walt sturgeon (Mycowalt)
2013-06-19 08:46:35 CDT (-0400)

The unbroken veil and gill color suggest Agaricus. The stipe base and possible volval remnants on the cap indicate Amanita. As Dave suggests, a spore print would resolve this. Also it would be good to have a photo of the top of the cap.

I just did a little searching on the Amanita website…
By: Dave W (Dave W)
2013-06-18 20:04:40 CDT (-0400)

and found this subsection of Lepidella, Amanita subsection Gymnopodae. Gills of these types range from yellow to ochre.

But color aside, the gills in this obs look like Agaricus to me. They appear to exhibit a sharp differentiation from the cap context. This trait is seen in some of the Agaricus types for which the gills are fairly easily seperable from the cap context. So I think this may be an Agaricus for which the stipe base is not normally formed, perhaps due to developing deeply in an abrasive substate… sand?

Whichever comes first (a spore print or Rod’s input) will likely clear up this one :-)

Yes and Yes
By: Christian (Christian Schwarz)
2013-06-18 19:07:37 CDT (-0400)

Both of those things occur…

Volvate Agaricus?
By: walt sturgeon (Mycowalt)
2013-06-18 18:57:52 CDT (-0400)
walt…
By: Richard and Danielle Kneal (bloodworm)
2013-06-18 18:40:25 CDT (-0400)

brown gills…?

Created: 2013-06-18 18:21:30 CDT (-0400)
Last modified: 2013-06-19 19:00:54 CDT (-0400)
Viewed: 203 times, last viewed: 2014-10-28 01:46:33 CDT (-0400)
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