Observation 111001: Amanita sect. Vaginatae sensu Zhu L. Yang
When: 2012-09-23
Herbarium specimen reported
0 Sequences

The four stages of this specimen were found under oak trees within about 5 feet of each other.
The thing that caught my attention was the stalks on the mature specimen.
The color is tawny brown and not orange or red, the lighting was weird and makes the one young egg appear more orange in the photos than it actually is.
The stuff on the cap is dirt, not powder.

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Material has arrived in good order.
By: R. E. Tulloss (ret)
2012-10-10 22:04:57 EDT (-0400)

Thank you.


By: John McDonough
2012-09-25 17:16:34 EDT (-0400)

Local humidity levels have been below 50% since last saturday and it has been in the mid to high 40 for temps at night. We are currently warming up with the humidity at 55% and rain forcast for tomorrow.
Possibly?? the dry and cool conditions are the cause of the “wild” looking stems and the overall brittleness of the specimens?
And that ladies and germs is the extent of my guesses regarding this observation:)

Stems go wild in Poplar Bluff!
By: R. E. Tulloss (ret)
2012-09-25 13:14:38 EDT (-0400)

There’s some local environmental thingy going one…I would suppose.

Very interesting.

You’re coming up with some neat stuff.

Very best,


By: John McDonough
2012-09-25 12:48:21 EDT (-0400)

“If I’m right about the crocea relation, then the inside surface of the volva should have some of the pigment of the cap. In addition, the inner surface of the volva should have a thinnish layer strongly resembling (almost precisely resembling) the structure of the skin of the cap.”

This is exactly correct. There is a layer inside the remaining volva that exactly matches the caps.
Several more are up in a 12 foot diameter ring around a old red oak. The stems are showing the same characteristics and the whole mushroom is very brittle, cap, stripe, base, and all.


Growth; speed and conditions?
By: John McDonough
2012-09-24 10:51:18 EDT (-0400)

That’s pretty darn cool Patrick!
I think this is a cause and effect, indicative of the weather/moister/soil/temperature conditions. However multiple specimens of this Amanita are showing the same stalk characteristics several days apart in maturity.
Regardless of the multiple rings on the stalks I believe it to be or closely related to A. americrocea.

Multiple rings
By: Patrick Harvey (pg_harvey)
2012-09-24 10:31:22 EDT (-0400)

Right, I have seen something like that once before, ringless honey mushrooms — with rings:


It’s still pretty cool!

— Patrick

By: John McDonough
2012-09-23 22:25:28 EDT (-0400)

Drying as I type. I will mail it tomorrow.
Having dug it up, ripping it from the earth because its strip caught my eye; I now feel like a Lorax to follow your Dr. Seuss analogy.

From the looks of the ground, many more of this species will be breaking thru early tomorrow morning.

By: John McDonough
2012-09-23 22:22:42 EDT (-0400)
If time allows, John,…
By: R. E. Tulloss (ret)
2012-09-23 21:59:20 EDT (-0400)

I’d be interested in seeing a mature specimen of this mushroom.

Very best,


The short marginal striation is typical of (at least) the taxa that appear to be…
By: R. E. Tulloss (ret)
2012-09-23 21:56:22 EDT (-0400)

closely related to A. crocea.

The stipe looks like the telescopic trunkis of some trees in illustrations by Dr. Seuss. I expect to see a long-necked bird in a goofy feather boa coming out from behing the mushroom in the next picture as I scan down the column of images.

If I’m right about the crocea relation, then the inside surface of the volva should have some of the pigment of the cap. In addition, the inner surface of the volva should have a thinnish layer strongly resembling (almost precisely resembling) the structure of the skin of the cap.

It is possible that you have something “close to” either A. pseudocrocea or A. americrocea (if indeed I haven’t given two names to a single thing).



Very best,


Post Oaks
By: John McDonough
2012-09-23 21:43:37 EDT (-0400)
Very cool.
By: Eric Smith (esmith)
2012-09-23 21:30:23 EDT (-0400)

I don’t have any answers. What kind of tree(s) was it growing near?

Pictures added
By: John McDonough
2012-09-23 21:14:17 EDT (-0400)

I went out and dug it up and took some more photos.
It is faintly striate, getting more pronounced at the margin, but still more uniform in color all over.
The remaining volva and root base were very shallow in the soil.

By: John McDonough
2012-09-23 20:52:18 EDT (-0400)

Give me a few minutes and I will get more pics posted.

Do you have a shot
By: Eric Smith (esmith)
2012-09-23 20:46:22 EDT (-0400)

of the entire mushroom including the base? Is the cap margin striate at all?

By: John McDonough
2012-09-23 20:40:59 EDT (-0400)

It has me stumped for now!
i will watch and see what the two eggs do as they mature to see if their stalks do the same?

By: Eric Smith (esmith)
2012-09-23 20:34:22 EDT (-0400)

I’ve seen this before I think, but not nearly so dramatic. The stalk is spitting horizontally creating an illusion of multiple annuli. Due to environmental conditions?

Created: 2012-09-23 20:27:18 EDT (-0400)
Last modified: 2012-09-25 11:31:05 EDT (-0400)
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