Observation 170464: Amanita ravenelii (Berk. & M.A. Curt.) Sacc.

When: 2014-07-16

Collection location: Hawn State Park, Missouri, USA [Click for map]

Who: weed lady (Sylvia )

No specimen available

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Eye3 = Observer’s choice
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You’re welcome, weed_lady.
By: R. E. Tulloss (ret)
2014-07-18 08:12:15 PDT (-0700)

And very ambitious to take up mushrooms. Your photography is up to the task. I was so glad to find that you had posted a photograph to which I could refer in my comment.

Very best,


Thank you
By: weed lady (Sylvia )
2014-07-18 06:40:36 PDT (-0700)

ret for an explanation that even I can understand. My eyes are quite old as a matter of fact, and so is my brain. But making an attempt at identifying fungi late in my life. Never too late to learn something. Actually I did find another specimen of Amanita ravenelii there and it was as you describe it. Thanks again.

Take a look at the first picture at the highest magnification. EDITED.
By: R. E. Tulloss (ret)
2014-07-17 07:53:41 PDT (-0700)

You will see that each firm wart is sitting on a volval “underlayer” of white fibrils that is extremely distinct. This is a character of Amanita ravenelii that is easy to see with a hand lens…or even the naked eye (if you have good eyes). The bulb at the base of the stem of ravenelii is very variable and can be completely irregular (a very chunk monkey) or elongate like the bulb on the stem of rhopalopus. It’s size and shape can be variable. Multiple caps can share a common bulb. Etc. The trick for macroscopic ID is the fibrous layer below the warts.

The large pyramidal warts of cokeri come off the cap rather easily especially after a rain and lack a fibrous base that actually connects the warts and the cap surface in ravenelii.

Very best,


Very best,


Created: 2014-07-17 04:23:57 PDT (-0700)
Last modified: 2016-03-24 10:43:04 PDT (-0700)
Viewed: 47 times, last viewed: 2017-07-12 11:15:49 PDT (-0700)
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