Observation 111182: Amanita “sp-MO01” Tulloss crypt. temp.

When: 2012-09-25

Collection location: Poplar Bluff, Butler Co., Missouri, USA [Click for map]

Who: John McDonough

Specimen available

Found in rocky clay soil common in the Ozark foothills of Missouri.
Growing very close to where a old White Ash tree stump used to be and within about 75 feet of a huge old living Post Oak.
Chocolate brown in color growing slightly gray with maturity. Stripe and Gills also change slightly gray along with the once white remains of the volva.
Stripe was cracking and the cup remains were dry, hard, and brittle. As you can see in the photo’s it broke in half in my hand as I was trying to get a better picture.
Nicely pronounced radial lines at the margin become darker with age.

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Add Comment
While most of the hymenium is immature in this specimen.
By: R. E. Tulloss (ret)
2013-11-17 14:22:56 EST (-0500)

I did find 10 spores in position to be measured. There size and shape conforms with the spores seen on MO 110108. [See further notes on that observation.] We have sampled the material for DNA sequencing.

Very best,


By: R. E. Tulloss (ret)
2013-05-31 11:21:06 EDT (-0400)

Thank you, John.

Very best,


They are back.
By: John McDonough
2013-05-31 10:47:32 EDT (-0400)

After heavy rains yesterday and last night, I hiked out to see…and they are back again this year in the same exact spot.
I collected the best looking 1 out of 4 specimens found and will make a new entry shortly. I will send you the dried specimen.

Material arrived in good order.
By: R. E. Tulloss (ret)
2012-10-10 22:05:41 EDT (-0400)

Thank you.


thank you
By: John McDonough
2012-09-26 15:17:49 EDT (-0400)

I went to the field and put it to use. Having your sample to go by cleared things up quite a bit.

happy hunting

I’ve got a better solution, now.
By: R. E. Tulloss (ret)
2012-09-26 13:17:18 EDT (-0400)

The collecting notes form and sample forms are now available among the items of the “how to” list that is on the upper left of every taxon page. Now everybody should be able to find it easily.

Very best,


John, I wish you could share it with everybody.
By: R. E. Tulloss (ret)
2012-09-26 12:55:59 EDT (-0400)

A picture is worth a thousand words, but interpretation of a picture is often very much needed…and you can’t dissect, measure, or measure spores from a picture.

Please do circulate the blank form pdf.

Very best,


By: John McDonough
2012-09-26 10:27:27 EDT (-0400)

Ok if I share this pdf form with other like minded individuals?

I have looked at Patrick’s observation and see nothing to make me think it is not the same as mine.


Another attempt to make a simple link to the blank field note form.
By: R. E. Tulloss (ret)
2012-09-26 08:35:41 EDT (-0400)


This will get you to the “Brief How To’s” page. You still have to open the “Morphological Study Methods” article on that page.


The two note forms are essentially the same.
By: R. E. Tulloss (ret)
2012-09-25 22:45:05 EDT (-0400)

The two-sides-of-one-page version is just more compact, less paper to shuffle or misplace or get out of order, etc.

Patrick Harvey has posted an observation with partially expanded buttons of what might be the same species. one of the buttons has a piece taken out of the cap clearly showing the partial veil with a striate upper surface.

Very best,


Not Vaginatae, as partial veil is present?
By: John McDonough
2012-09-25 21:30:40 EDT (-0400)

easier to see in this one as compared to the one showing at the bend in the stripe of the first one?

It is dry, will mail it tomorrow.
By: John McDonough
2012-09-25 17:40:15 EDT (-0400)

Thank you! this is really quite complicated and I have much to learn!
Your patience with me and my antics is much appreciated.
Just like the other specimen the remaining volva cup was hanging by mere “treads”, dangleing would be a good description. It fell off intact into my hand, I got one photo then it separated into two pieces.
Anyway, you should have it in a few days…..I did my best with the “notes” form I found in your “workshop” pdf.


The forking is not unusual in sect. Vaginatae
By: R. E. Tulloss (ret)
2012-09-25 17:25:01 EDT (-0400)

I see that, once again, you fond the volva at the stem base to be hard and inverted conic. This is quite unusual. The material looks good.

Very best,


Just noticed
By: John McDonough
2012-09-25 15:26:01 EDT (-0400)

in the second photo, that some of the radial lines fork near the cap’s outer margin.

Created: 2012-09-25 15:03:46 EDT (-0400)
Last modified: 2017-12-29 13:44:31 EST (-0500)
Viewed: 214 times, last viewed: 2018-07-24 19:28:33 EDT (-0400)
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