Observation 119823: Amanita nauseosa (Wakef.) D.A. Reid

When: 2012-12-13

Collection location: Ellenton, Florida, USA [Click for map]

Who: Josh M.K. (suchen)

Specimen available

Fertilized and irrigated lawn with 5-10 year old St. Augustine grass in Central Florida.

Unattached. Whitish. Serrated in maturity.

White to pinkish and slowly bruising yellow, covered in mealy scales that take on a reddish-brown tinge. Superior white annulus which is striate above and fluffy/scruffy below. No bulb at the base. Longer than cap width. About 5-6 inches

3-4 inches in diameter. Highly appendiculate. Whitish underneath but covered in reddish-brown scales or fibers that are whole over the center. Exudes a resinous light maple syrup-colored goo.

Odor: Strong and horrific. Only way I can think to describe it is tainted and overpowering cilantro. Or perhaps lemon pepper chicken dipped in industrial products.

Spore print color: edit: white

I have no access to a microscope, but two specimens are spore printing and will later be dried.

Proposed Names

-27% (1)
Recognized by sight: Foul aroma, fluffy/mealy scales everywhere
Used references: Villinga, E. Key to the species of Cystolepiota in western North America
27% (1)
Used references: Correspondence with Else Vellinga. She suspects this is not Lepiotaceous.
61% (2)
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Sorry to have not responded at the time, Josh.
By: R. E. Tulloss (ret)
2013-05-15 05:02:45 SAST (+0200)

I dropped off of the automatic notification feature of MO about the time that you failed to get a response from me late last year.

My apologies.


RET to the rescue!
By: Josh M.K. (suchen)
2012-12-18 04:15:54 SAST (+0200)

Thank you both very much for your help. The lack of a volva and/or bulb really threw me for a loop. Ellenton is in Hillsborough County. It’s fascinating that this species lives without a mycorrhizal partner! That was another oddity for me, because when I first found these in May in a back yard there were no trees within 100 yards. This observation here at least had trees in the vicinity. Nauseosa is quite an apt epithet. Stale tiger urine indeed… off to the local zoo to compare odors!

I have saved 1 slightly younger (the unopened one photographed in this observation), and one mature cap, though I was allowing them to…ahem… air dry naturally outdoors due to the stink, so they have not dried completely yet even a few days later. I will dry them further tonight and tomorrow if you would still like the samples, Dr. Tulloss?

In what county is Ellenton?
By: R. E. Tulloss (ret)
2012-12-18 02:19:50 SAST (+0200)


One of the descriptions of the odor is…
By: R. E. Tulloss (ret)
2012-12-18 02:16:11 SAST (+0200)

“stale tiger urine.”


How about… [edit …repaired link]
By: R. E. Tulloss (ret)
2012-12-18 01:59:25 SAST (+0200)

Amanita nauseosa?

Check it here:


This a species of Amanita that is not mycorrhizal and stinks to high heaven. It should get more pronounced yellowish and reddish staining as it gets older.

If you have a dried specimen, I’ll take it or part of it off your hands. :)

Very best,


By: Elsa (pinknailsgirl)
2012-12-18 00:53:50 SAST (+0200)

You made me remember a specie look alike yours in colours. At that time I was looking for a lepiota Id, but the specimen was very tall and bigger than most lepiotas. And the smell… wasn´t so bad, some fruity thing but so strong, that all room was smelling like it. I found it in a outside garden of a house. Unfortunately the photos are gone…but the colour of cap was similar to yours, and with scales but not the stem… all these last cream.

Created: 2012-12-14 01:02:28 SAST (+0200)
Last modified: 2012-12-18 04:55:36 SAST (+0200)
Viewed: 174 times, last viewed: 2018-01-27 03:43:05 SAST (+0200)
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