Observation 148482: Amanita vulpecula Tulloss nom. prov.

When: 2013-10-14

Collection location: Wharton State Forest, Burlington Co., New Jersey, USA [Click for map]

39.7444° -74.707°

Who: I. G. Safonov (IGSafonov)

Specimen available

A family of 5 specimens (2 mature basidiocarps in poor shape, 2 young ones with partially expanded caps and a button) growing in the middle of a trail running along the tracks of an abandoned railroad.

There was no odor associated with the fruit-bodies.

The collected young fruitbody noticeably grew in size and expanded its cap while sitting in wax paper bag at ambient temperature over the course of several hours. This phenomenon continues to amaze me just like the negative gravitropism (?) exhibited by members of this genus — I wonder if other basidioumycetes are capable of either.


No flash – auto mode; exposure = 1/240 sec.; ISO = 160; F-stop = f/4
No flash – auto mode; exposure = 1/300 sec.; ISO = 160; F-stop = f/4
No flash – auto mode; exposure = 1/220 sec.; ISO = 160; F-stop = f/5.6
No flash — manual mode; exposure = 1/160 sec.; ISO = 200; F-stop = f/4
The fully expanded cap of the above specimen
The fully expanded cap of the above specimen
Spores deposited on glass viewed at x400;

Proposed Names

-61% (2)
Recognized by sight: Based on spore shape (Q’ value too large for dulciarii)
54% (1)
Recognized by sight
82% (1)
Recognized by sight: Seems odd to say “recognized by site” when you just proposed a temporary code name. At any rate, with this combination of cap color, the bright colored stipe decoration and the Pine Barrens habitat. I think this will be recognized again. I think the end of the dense fibrillose layer is associated with the broken ring of tissue around the stipe that is probably the internal limb of the volva—-it seems to be intimately connected to the orange fibril layer. When the web page is created, it will be here:

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
The temporary code name will be “sp-55”.
By: R. E. Tulloss (ret)
2013-11-06 07:37:15 CST (-0500)


Thanks for the additional info on colors, etc.
By: R. E. Tulloss (ret)
2013-11-05 22:43:45 CST (-0500)


I think there is a bulb at the base of the stem.
By: R. E. Tulloss (ret)
2013-11-05 21:15:11 CST (-0500)

So I’m going to suggest sect. Amanita.

Very best,


By: I. G. Safonov (IGSafonov)
2013-11-05 21:03:09 CST (-0500)

I checked pix properties, and none were taken with a flash. The bright light you see is the sunshine. The pix were taken at 1:30 pm, so the sun was still pretty high and the colors look very natural. In the first picture, the stipal ornamentation looks reddish because it’s in the caps’s shade. The ornamentation is definitely orange, not red-orange. I think that the most accurate presentation of this color is in the fourth picture from the top. I have listed photographic parameters of the first four pictures.

Is the decoration on the stem red-orange or orange?
By: R. E. Tulloss (ret)
2013-11-05 20:19:37 CST (-0500)

Is the first photo taken with the red-heightening flash?


Average Q for the first 20 spores is 1.38.
By: R. E. Tulloss (ret)
2013-11-05 20:18:08 CST (-0500)

As soon as I get a handle on the macro characters, we’ll post a new code-named taxon for this guy on WAO.

Very best,


OK, this is a start.
By: R. E. Tulloss (ret)
2013-11-05 20:15:48 CST (-0500)

Don’t worry about the shipment going out tomorrow. There will be more that will follow it.

Very best,


By: I. G. Safonov (IGSafonov)
2013-11-05 19:38:17 CST (-0500)

I suggest you postpone sending your sequencing shipment till you get my package (mailed at noon today), unless of course there is a set limit as to how many you can get sequenced. There is at least one amanita in the parcel that looks very similar to this one.

The present specimen was not collected at FPP — the site is a mile to the east of Atsion Lake (see the GPS coordinates). As far as habitat is concerned, it’s mostly, if not exclusively, Pinus rigida. If my memory serves right, scrub oak is the only deciduous tree species present there and should not be involved due to seasonal changes. There might have been blueberry bushes and other shrubs around, but I bet this thing is hosted by the pines.

As stated in the notes, the specimen was odorless. As far as the size is concerned, when I allowed the cap to expand, it was around 6 cm, give or take a few millimeters.

I’d look at this as a postive:
By: R. E. Tulloss (ret)
2013-11-05 18:37:13 CST (-0500)

What the heck did you find?

If we’ve mixed this with dulciarii in the past, that may turn up in the set of dulciarii specimens that I’m sending off for sequencing tomorrow a.m. Naomi finished sampling a bunch of dulciarii today.

Maybe, the pale colored caps are this other critter. That would be very interesting.

I would suggest making vertical sections of adults and buttons that might be this taxon. If this is a species of sect. Amanita, we should see a clearly defined bulb in the youngest material that you find.

We need annotated specimens, too. Measurements, smells, associated trees. Is there something in addition to Pine and Oak along the RR line? Were you east of the airport gate or west of it?

Very best,


By: I. G. Safonov (IGSafonov)
2013-11-05 17:33:53 CST (-0500)

We better change the community vote to reflect your findings.

Very interesting!
By: I. G. Safonov (IGSafonov)
2013-11-05 17:30:08 CST (-0500)

Thank you for commenting, Rod. Having looked at the spores myself around the time this obs. was posted, I could have arrived at this conclusion on my own had I looked at the Q’ value (1.09) for dulciarii on your website. Even at 400x one cans see that the spores are not globose/subglobose. I feel stupid. :(

Any idea what this might be? Will this one get sequenced? Seems like this amanita is common in the Barrens, at least this year. I wonder how many of the recent amanita obs. I posted (Nov. 3-4) are the same thing…

By: R. E. Tulloss (ret)
2013-11-05 12:59:57 CST (-0500)

I looked at the spores of the large cap and they are inamyloid but broadly ellipsoid to ellipsoid, which eliminates A. dulciarii.

Created: 2013-10-14 22:13:40 CDT (-0400)
Last modified: 2017-12-29 17:05:39 CST (-0500)
Viewed: 167 times, last viewed: 2018-01-26 05:04:14 CST (-0500)
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