Observation 171547: Amanita “sp-57”
When: 2014-07-28
Herbarium specimen reported

Notes: Spores, 14.1 X 7.6, amygdaliform to ellipsoid, very weakly amyloid, ornamentation? or some other texture becoming pronounced in melzers.

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Comments

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I very much like your image. Others show some sort of brown staining of…
By: R. E. Tulloss (ret)
2016-04-08 06:30:31 MDT (-0600)

some of the volval material. I don’t know if it is something that is genetically determined by the amanita or is something growing on the amanita. It would be very nice to have more data on the macroscopic characters.

Thanks for your interest.

Very best,

Rod

Thanks
By: Rocky Houghtby
2016-04-07 19:50:14 MDT (-0600)

For the reply, Rod. I’m glad to hear that your concept for sp-57 is developing. If I ever come across this species again, I’ll make sure to make a better collection with more data.

We now have sequences from three collections of this species…
By: R. E. Tulloss (ret)
2016-04-06 19:20:15 MDT (-0600)

(although not from your material). We know it is indeed related to A. levistriata (with a universal veil more olive than the rather bright yellow seen in your images). The spore are thus more likely to be inamyloid (compare their color to the color of a nearby air bubble in a mount). The range of the species extends from at least Long Island in the north to at least Florida and Texas in the south. The southern part of this species’ range overlaps with the range of A. levistriata.

What we know is be found here:

http://www.amanitaceae.org?Amanita%20sp-57

Very best,

Rod

Hi Rod
By: Rocky Houghtby
2016-04-06 17:57:58 MDT (-0600)

This observation came to mind earlier this week, while I was discussing the collection location with a friend. I was curious if you were able to draw any conclusions, or at least generate some data that you could share with us?

Thanks, hope you are well!
Rocky

Your material for this observation arrived today in its robust packaging.
By: R. E. Tulloss (ret)
2014-08-12 10:13:58 MDT (-0600)

I’m going to make sure it hasn’t absorbed moisture on its way to NJ as the first step.

Thank you very much for sending the material.

Very best,

Rod

Thank you, Rocky.
By: R. E. Tulloss (ret)
2014-08-04 14:58:47 MDT (-0600)

R

Way cool Nita, Rocky.
By: Debbie Viess (amanitarita)
2014-08-04 11:37:53 MDT (-0600)

But section Phalloides? Really? With that crumbly UV and a membranous partial? Sure looks like a classic Validae to me.

Your sp. 57 does share macro similarities with this photo, Rod, as well as those vaguely amyloid spores.

OK, I’ll bite … who had the Fiery Gizzard and more importantly, why?

.
By: Rocky Houghtby
2014-08-04 10:58:35 MDT (-0600)

It’s in the mail, Rod.

Thank you for the additional information.
By: R. E. Tulloss (ret)
2014-07-30 09:03:30 MDT (-0600)

The spores are very different from those I’ve seen in the two macroscopically similar collection I’ve seen. It gives me some concern that we are seeing an organism that is transforming multiple amanita taxa produce a superficially common form.

Getting different genes from the different collections would add some support to that hypothesis. We will have to wait and see what further studies will show.

Very best,

Rod

Average
By: Rocky Houghtby
2014-07-30 06:58:10 MDT (-0600)

Of 8 spores measured @ 1000X. There is an obvious blue reaction en masse when mounted in lugols (not pictured) but the reaction is ambiguous in Melzer’s- not sure how to define that. Also, if it is even relevant, the basidia are four spored with extremely short stergimata and are deeply embedded in the hymenium.

The mystery deepens
By: R. E. Tulloss (ret)
2014-07-30 06:32:42 MDT (-0600)

Thank you.

What level of magnification are you using?

Are you giving the largest spore viewed or the average dimensions of several spores viewed?

Rod

Added micrograph
By: Rocky Houghtby
2014-07-29 22:18:12 MDT (-0600)

The spores are larger than my original estimate. Also, I’m not sure that these spores can be considered amyloid at all.

Rod, I’ll let you know when I mail this.

Indeed. Why not?
By: R. E. Tulloss (ret)
2014-07-29 07:03:31 MDT (-0600)

The situation needs some analysis. But I think we can make a small start here.

Amanita levistriata has inamyloid spores that are subglobose to broadly ellipsoid. The average Q that I report on the WAO website is 1.15. Jenkins intended the name to indicate the margin of the cap in levistriata is lightly striate by which he meant “short-striate.” The pigmentation of the cap of levistriata is usually not so intense as in the images of the present observation. The color of the volva can be quite intense. Notice that the underlying cap color in Brian Adamo’s illustrations of the observation Herbert cited for levistriata is quite pale. Unfortunately we have no dried material from Brian’s observation; but I think that levistrata is justified by the photographic evidence in that case.

Onward, toward the Fiery Gizzard.

A quick survey of our database here in Roosevelt shows that we have at least two temporary codes already in the mix, which may be an additional complicating factor…sp-N50 and sp-57. Both have much narrower spores than does levistriata. Before the Fiery Gizzard Trail collection (I love that name), we had two collection of apparently similar color, form, and spore size-shape. Rocky reports spores that (if I understand his notation) could be more than twice as long as they are wide. That’s even more narrow than the Long Island material of “sp-57.” [I think the Long Island collections may have done a little in situ drying.]

I propose that we compare sp-N50, sp-57, and the present collection. I will report on what is found. This a curious situation. I don’t think any of the three fit the concept of levistriata. The Long Island collections has a submembranous or felted universal veil patch hanging on one side of the cap. Good old Occam’s Razor suggests that we may have an excess of names. On the other hand, we haven’t taken genetics into account yet.

When we have all the material together (Naomi, are you seeing this?), we will sample all three collections for sequencing and see what we get.

Very best,

Rod

Why not Amanita levistriata?
By: Erlon (Herbert Baker)
2014-07-28 22:39:28 MDT (-0600)

..reminds of this observation http://mushroomobserver.org/137879?q=26WXc

I agree with Richard regarding MO #139385
By: R. E. Tulloss (ret)
2014-07-28 21:43:20 MDT (-0600)

On the other hand, the form of the volva varies a heck of a lot…if all three collections are the same taxon.

Rod

I have posted one of Joel Horman’s photos at the URL given below.
By: R. E. Tulloss (ret)
2014-07-28 21:37:53 MDT (-0600)

The species are strikingly similar including the weakly amyloid, elongate spores.

Rod

do you…
By: Richard and Danielle Kneal (bloodworm)
2014-07-28 21:31:01 MDT (-0600)

have any photos of the gills, gill attachment, color below the ring or pileus?
what was the shape of the base?

Sure thing
By: Rocky Houghtby
2014-07-28 21:15:23 MDT (-0600)
I will send it to you shortly.
I would be very interested in seeing your dried material (or a portion of it) ….
By: R. E. Tulloss (ret)
2014-07-28 21:08:09 MDT (-0600)

if that is possible.

Very best,

Rod

reminds me of…
By: Richard and Danielle Kneal (bloodworm)
2014-07-28 21:08:08 MDT (-0600)

www.mushroomobserver.org/139385

This is extraordinary.
By: R. E. Tulloss (ret)
2014-07-28 21:05:49 MDT (-0600)

I believe that this species was recently reported from Long Island by Joel Horman.

I haven’t finished posting a page for this, but several illustrations will soon be here:

http://www.amanitaceae.org?Amanita+sp-57

DNA was successfully extracted and indicates that the species is likely to be in section Phalloideae.

Very best,

Rod

Created: 2014-07-28 20:52:13 MDT (-0600)
Last modified: 2016-08-02 20:03:44 MDT (-0600)
Viewed: 254 times, last viewed: 2016-10-22 08:13:33 MDT (-0600)
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