Observation 138347: Amanita praecox Y. Lamoureux nom. prov.
When: 2013-06-30
No herbarium specimen

Notes: I was going to post this as “Amanita praecox”, with maybe an honorbale mention to A. albocreata. Then… the discussion seen in the link.

The mushroom seen in my post (Seven Tubs, PA) looks a lot like the one in the link (GA).

Not certain if my collection has what may be called a limbate volval structure.

Mixed woods, lots of hemlock, birch.

Specimen preserved and is available for study.

Proposed Names

29% (1)
Recognized by sight: Limbate vovlval structure seems to lead away from Pantherinae… except, see discussion under “comments.”
52% (1)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thanks Dave,
By: groundhog
2013-07-25 19:41:35 EEST (+0300)

This material has been received and accessioned.

I learned albocreata first because it came in on a NEMF foray (long ago!)…
By: R. E. Tulloss (ret)
2013-07-02 06:44:22 EEST (+0300)

and (to show you how long ago that was) it was IDed by Dr. Jenkins. Later I wrote a little paper with Dr. Jenkins about finding a fresh specimen of the species. He had never seen it fresh either. When I first saw praecox it was on one of the old NJMA late June forays along the Delaware in eastern PA. There was a lot of hemlock in the woods there. I was terribly confused by praecox (thought it was a yellow albocreata or something) until I caught on to the limbate volva and the disappearing partial veil. Aha! I had a number for it for years; then Yves came up with the name praecox, and I realized that it corresponded to my old number. I swapped over to his proposed name at that point.

Very best,


Just got lucky with my camera…
By: Dave W (Dave W)
2013-07-02 06:17:18 EEST (+0300)

translucent white umbrella, and reflector I guess. Sometimes the head-on cap shots come out real nice simply because the entire subject is embedded into a plane normal to the line of sight. Then the macro feature doesn’t get confused.

This is all really helping me sort out this stuff about the variability in basal volvals on the panteroid types… and the other similar ones from section Amanita. I did in fact post a recent observation of what I IDed as A. praecox which showed a pretty crazy-looking limbate volva. I had begun to wonder about that post. This all really helps one distinguish between praecox and albocreata.

I agree about the spores in this obs having q~1.1, or maybe even smaller.

The spores are really helpful here, but they don’t support something similar to…
By: R. E. Tulloss (ret)
2013-07-02 05:40:53 EEST (+0300)

russuloides. The spores would need to have an average length/width ratio of about 1.3 or so for russuloides and its ilk. I would guess that the spores in the photo (if we could see some clearly in side view) would have a length/widt ratio (Q) of around 1.10 plus or minus a small bit…making them more like the spores of A. praecox which also has a limbate volva at the stem base.

The photos are absolutely luscious and moist. Nice representation of the surface of the cap. Did you use a polarizing filter?

Very best,


Created: 2013-07-02 04:27:27 EEST (+0300)
Last modified: 2013-07-02 06:18:15 EEST (+0300)
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