Observation 25558: Amanita citrina sensu auct. amer.
When: 2009-09-21
No herbarium specimen

Notes: This Amanita was solitary in Zone 40, close to the location of a previous (early September) sighting of A. citrina. Then there had been several; on the 21st there was just the one youngish specimen.

Proposed Names

18% (3)
Eye3
Recognized by sight: The pigment streaks are more suggestive of sect. Phalloideae, but the collared bulb looks more like A. citrina and, to my knowledge, A. phalloides isn’t known from the Northeast and is the only greenish N.A. deathcap.
-5% (4)
Eye3
Recognized by sight
29% (1)
Eyes3
Recognized by sight: Apparently what they’re calling North American citrinas nowadays. Greying ring edge is also a feature associated with the citrina types sometimes according to Ret, and is apparent in this specimen.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
About grey…
By: R. E. Tulloss (ret)
2009-09-25 17:01:14 CEST (+0200)

Since very few taxa in sect. Amidella have a partial veil that persists, and since I can’t think of one of these with gray volval material on the underside, I can’t say that gray on a partial veil is common in that section. Gray on a partial veil (or lacking one) on the stipe in sect. Lepidella is usually restricted to species with a gray universal veil.

Gray on a partial veil in taxa such as A. porphyria (broad sense) and A. citrina (broad sense) is relatively frequent in the former and sometimes occurs in age in the latter. However, I don’t believe that a thorough revision of either of these taxa has been completed.

R.

why isn’t this citrina var. lavendula????
By: Debbie Viess (amanitarita)
2009-09-24 00:56:58 CEST (+0200)

or whatever that mushroom is being called these days.

the first time I saw citrina back east in NH (it doesn’t occur in CA) I thought that I had found a phalloides. the purple gray tinged partial veil set me straight. this mushroom looks to be a good fit for citrina, IMO.

as to phalloides not occursing in YOUR neighborhood…better amend that statement to yet. this mushroom gets around, unfortunately, and I’d advise vigilance. not that anyone eats citrina, as far as I know…but still.

Amanita porphyria…
By: R. E. Tulloss (ret)
2009-09-23 16:21:54 CEST (+0200)

In A. porphyria, the entire ring is gray. The yellowish virgate material called “A. porphyria” was common at the Newfoundland forays that I attended.

[Note: I would be very interested in material of A. porphyria accompanied by a photograph of a cross-section of the lower part of the stipe and the bulb as well as good photographs of the complete fruiting body in various stages with you favorite local cap colors.]

R.

Amanita phalloides in NE North America…
By: R. E. Tulloss (ret)
2009-09-23 16:17:54 CEST (+0200)

Amanita phalloides has been sent to me from Maine by the late Dr. Sam Ristch. Also, there is a “famous” A. phalloides site in Rochester, NY. Amanita phalloides could be closing in on Canada in a pincer movement….

R.

By: Paul Derbyshire (Twizzler)
2009-09-23 15:57:24 CEST (+0200)

Most sources and all photos found with Google, including Lincoff and Wikipedia, describe that species as having a brown cap, though having a grey ring and a bulb as observed here. However, Amanita Studies mentions also pigment streaks resembling those of sect. Phalloideae (by saying it may “appear radially fibrillose”) and, furthermore: “Occasionally, specimens are found which are strongly virgate with pigments ranging from grayish yellow to brown, sometimes having an apparent olivaceous tint.”

So it sounds like this could indeed be a rare variant of A. porphyria.

Wikipedia and Lincoff list the species as poisonous. (No worries — I assume all Amanitas are dangerously toxic until proven otherwise!) It’s mentioned as seemingly closely related to A. citrina in multiple places, including Amanita Studies, and as likewise belonging to sect. Validae.

Poking around there I also find mention of an A. citrina var. grisea that has the grey lower part of the ring. But it’s supposed to also have a grey cap and occur in Asia.

All of this suggests that a) A. porphyria and A. citrina are closely related and b) this specimen might be either. I’m changing my votes to “Could Be” for both species.

DNA experts may want to determine if those two species are even truly separate, or if N.A. A. porphyria and A. citrina are just a single somewhat-variable species and European A. porphyria and A. citrina are likewise, and perhaps the same or perhaps a distinct species from the N.A. one, and if the Asian A. citrina var. grisea is a distinct species again; and how recently they all last had a common ancestor.

Grey
By: Paul Derbyshire (Twizzler)
2009-09-23 03:34:12 CEST (+0200)

Grey stuff on the ring underside is common in sections Amidella and Lepidella is it not? That’s interesting, since A. citrina is in section Validae and A. phalloides is in section Phalloideae, the other two sections of subgenus Lepidella.

a Phalloide
By: Jonathan M
2009-09-23 03:10:24 CEST (+0200)

Don’t grow in these area.

Cap certainly does look like phalloides…
By: R. E. Tulloss (ret)
2009-09-23 02:00:04 CEST (+0200)

Although, I don’t remember every seeing gray material on the underside of the ring on the stem in A. phalloides.

Very best,

ROd

Created: 2009-09-22 20:37:21 CEST (+0200)
Last modified: 2010-09-10 05:44:05 CEST (+0200)
Viewed: 94 times, last viewed: 2016-10-27 23:55:20 CEST (+0200)
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