Observation 92105: Amanita nivalis Grev.

Voucher Number: NAMA 2010-250 ; Amanita nivalis Grev.; Identified by: Cathy L. Cripps ; Collected by: Don Bachman ; Voucher Specimens are located at the Botany Herbarium, Field Museum of Natural History, Chicago.

Species Lists


Proposed Names

85% (1)
Recognized by sight
83% (1)
Recognized by sight
Used references: GenBank: MK580813

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= Observer’s choice
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Hi Stephen
By: Debbie Viess (amanitarita)
2018-12-08 18:40:55 CST (-0500)

I tried to run a BLAST on Genbank directly from this obsie, but it didn’t really work. Or at least, I saw no 100% match to this sequence, and nothing that said nivalis. Two “closest matches” (to what?) were (at 99%) to “minnesorora” and battarea.

There is another nivalis sequence up on Genbank. Is this one up on Genbank yet?
I am confused, and curious.

DNA suggests it is a close match to:
By: Stephen Russell (Mycota)
2018-12-08 15:00:41 CST (-0500)
and I told you.
By: Debbie Viess (amanitarita)
2018-11-28 13:05:57 CST (-0500)
I asked “how to know,” not for you to shoot off your big fat mouth.
By: Britt Bunyard (Fungi magazine) (bbunyard)
2018-11-28 11:58:01 CST (-0500)

Yep, I know Cathy and where she lives. Yep I trust her IDs, was not challenging her…merely asked how I, a poor stoopid midwesterner, could possibly learn how to know that species. Unlike, you, a west coaster, I see mushrooms in Colorado every year and am trying to educate myself about them. (I know you’ll of course have reply—you always have lots more to say—but challenge you to abstain from replying or to do so in fewer than 5,000 words, as your argumentative behavior is upsetting to the entire world.)

well Britt, one good reason …
By: Debbie Viess (amanitarita)
2018-11-28 11:41:15 CST (-0500)

Cathy Cripps IDed it fresh!

Both she and I have found nivalis in the western mountains. The habitats for nivalis and “stannea” are quite different, and the volva for nivalis, before it dried up, is quite distinctive: pinched and flaring. Nivalis never has the shiny metallic cap of stannea, either. And it is ONLY found with dwarf willow at high elevation.
I found mine at 14,000’.

Unlike for a Midwesterner, Cathy actually lives and works in the western mountains full time, and she knows her local mycoflora pretty darned well.

So yeah, I trust her ID.

Nivalis is small (not tiny), but I have seen phalloides smaller!


Why is this not Amanita stannea…and how to know the difference?
By: Britt Bunyard (Fungi magazine) (bbunyard)
2018-11-28 09:38:04 CST (-0500)

I see mushrooms that look just like this (the fresh ones AND the aged ones) every year in the Telluride area of Colorado; they’re actually pretty common. We always refer to them as A stannea. How to know one from the other? Isn’t A nivalis supposed to be super tiny?

YMCA foray location?
By: Debbie Viess (amanitarita)
2013-10-18 23:33:31 CDT (-0400)

or collection location for nivalis?
what was the elevation where collected?

Created: 2012-04-06 21:44:37 CDT (-0400)
Last modified: 2019-07-26 17:58:20 CDT (-0400)
Viewed: 246 times, last viewed: 2019-10-31 03:16:13 CDT (-0400)
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