Observation 58322: Amanita “sp-OR02”
When: 2010-11-08
No herbarium specimen


Copyright © 2010 Britney
Copyright © 2010 Britney
Copyright © 2010 Britney
Copyright © 2010 Britney
Copyright © 2010 Britney

Proposed Names

55% (3)
Recognized by sight: saccate volva is partially exposed; cap margin is striate; apparently (n.b.) the stem is exannulate.
81% (1)
Recognized by sight: This is the original collection to which the temporary code name is applied.
Based on chemical features: DNA data indicates the species is not one previously sequenced.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
I’m sorry for the delay, but we have selected images of yours up on the new …
By: R. E. Tulloss (ret)
2014-11-23 11:03:46 CST (-0500)

species page.


Thanks again.

Very best,


Thank you, Britney.
By: R. E. Tulloss (ret)
2014-11-12 13:50:13 CST (-0500)


No objections
By: Britney Ramsey (Riverdweller)
2014-11-12 13:29:07 CST (-0500)

To using my photos. Thanks

There is a page being built…slowly…
By: R. E. Tulloss (ret)
2014-11-12 13:11:41 CST (-0500)



I know I can use your pictures (creative commons share and share alike), but I want to let you know in case you have any objections.

Very best,


By: Britney Ramsey (Riverdweller)
2014-11-12 10:53:40 CST (-0500)

Looking forward to your updates!

Today we received DNA data from the collection vouchering this observation.
By: R. E. Tulloss (ret)
2014-11-12 09:19:55 CST (-0500)

As was expected, the species is not closely related to any previously sequenced material of sect. Vaginatae. I will keep you advised as things progress.

Very best,


Specimen received
By: R. E. Tulloss (ret)
2010-12-18 17:22:12 CST (-0500)

Thank you, Britney.


short gills…
By: R. E. Tulloss (ret)
2010-11-09 22:15:16 CST (-0500)

Good observation on the short marginal striations, Christian.

I noticed the unusual arrangement of short gills in Britney’s photograph of the underside of the cap on the veggie dryer. The lamellulae are sometimes attached to the stem instead of the cap edge, and this is not a rare occurrence on this specimen. I did a brute force search on the Amanitaceae site for species with that pattern of short gills recorded (of course it might occur in some taxa, but not be recorded) in species of sect. Vaginatae having a membranous volval sac. Not all named taxa have lamellulae data on the site at this point, but hundreds of taxa do. I found only four taxa of the above designated group that had this arrangement of lamellulae. All four are North American and all four have provisional (not published) names. None of the four resemble Britney’s photos in cap pigmentation and are (I think) geographically isolated from the PNW.

The incomplete search for knowlege and fundamental mysteries still hold the upper hand in the present case.

Very best,


I don’t think
By: Christian (Christian Schwarz)
2010-11-09 21:33:20 CST (-0500)

it’s A. pachycolea – the texture (bumpy-rough), apparent visicidity, lack of any gray tones, and short sulcations point away from that species.

To me looks like an older A. pachycolea
By: Daniel B. Wheeler (Tuberale)
2010-11-09 20:21:23 CST (-0500)

Cap nearly planar. Usually has at least some irridescence to the cap, and should be fairly stout: 6 inches or taller from the ground, and probably 8-10 inches from the base of the volva.

By: AmatoxinApocalypse (AmatoxinApocalypse)
2010-11-08 22:21:21 CST (-0500)

I use a fan with a cardboard box for drying, or sometimes just keep the specimens I find in the paper bags I collect them in.

With a fan close to the specimen it only takes a day to get them dry, usually less time for average sized Amanita specimens.

I find a fan works better but this is just my experience.

I use damprid packets (not the loose stuff) to get the specimens “cracker dry”

A food dehydrator would be fine.
By: R. E. Tulloss (ret)
2010-11-08 22:13:53 CST (-0500)

Yes to the food dehydrator.

Yes to heat and to fan (if yours has a fan).


For preserving the delicate anatomy of amanita gills, quick drying is important.

Don’t put amanitas on a bottom tray and set the heat to about 120 degrees F (or about three quarters of the heat control dial if you have one). Put a tray or trays on the stack ABOVE the tray with the amanita to get a chimney-like draft going. If the room air is cool, this will make for dryer air when it is heated; and this, in turn, will cause the amanita to dry faster.

The amanita should get thoroughly dry - so that the cap will absolutely not wobble on the top of the stem. The whole critter should get as stiff as a potato chip and stay that way when it cools, but NOT BURN OR COOK.

Put the crispy critter in a sealable plastic bag AND, please, include “MO#58322” and your name (as the collector) on a slip of paper in the bag. Ship in a stiff container. There’s no reason to overdo it on the package size. Foam peanuts or some other packing material that won’t add much weight to the package is a good thing.

There you go. First try leading to disaster is automatically forgiven, no points against. :-)

Very best,


Linn County
By: Britney Ramsey (Riverdweller)
2010-11-08 21:20:10 CST (-0500)

And I will remember to include that next time. Would my food dehydrator be an acceptable way to dry this? Heat or no heat?

Thank you. This could be interesting.
By: R. E. Tulloss (ret)
2010-11-08 20:44:16 CST (-0500)

Can you post a county here in addition to the town name? This will help with the geographic data for the herbarium label, etc.

It will be interesting to see if there is something about the structure in the dried material that relates to the differences notable on the cap surface.

Since nobody has spoken up yet, I’m starting to think that the cap color pattern (or something) is not “run of the mill” for the PNW MO participants. [That ought to get somebody to tell me that I’m wrong.]

Very best,


They are the same mushroom
By: Britney Ramsey (Riverdweller)
2010-11-08 20:16:44 CST (-0500)

and the difference in the two pictures is lighting. The primary picture here is the closest to it’s true colors. The center of the cap is very rough and bumpy and dry while the margin of the cap was slimy.

are these both the same mushroom, Britney?
By: Debbie Viess (amanitarita)
2010-11-08 19:59:39 CST (-0500)

but with different lighting?

curious texture in the middle of the cap. and is that ice at the edge? or just water…

Yes I can..
By: Britney Ramsey (Riverdweller)
2010-11-08 18:34:52 CST (-0500)

Collect and preserve this species for you. Here’s the catch though, I didn’t leave a breadcrumb trail back to it. I hunt this space 3-4 times a week though and if I can find it again in the morning, I would certainly send it on for study.

Can this material be dried for study?
By: R. E. Tulloss (ret)
2010-11-08 18:00:18 CST (-0500)

Does anyone recognize this as something that is commonly collected in Oregon or nearby?

Do you have an opportunity to collect this and dry it for study?


Created: 2010-11-08 16:45:58 CST (-0500)
Last modified: 2014-11-12 13:05:38 CST (-0500)
Viewed: 218 times, last viewed: 2016-10-26 12:52:02 CDT (-0400)
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