Observation 23904: Amanita ravenelii (Berk. & M.A. Curt.) Sacc.

When: 2009-08-02

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

Who: Patrick Harvey (pg_harvey)

Specimen available

Species Lists


This is my good friend Ruth Harrison, who found this mushroom.
Shot of the pileus to show the warts
Wart through hand lens. Imaged photoshopped by Dr. Rod Tulloss —
he calls it “The Face on the surface of Mars.” I’ll have to agree!
Another wart detail photoshopped by Dr. Tulloss — “The rivers originating
in the Himalays”

Proposed Names

56% (3)
Recognized by sight: it is certainly in Amanita section lepidella, but lepidella isn’t a genus.
86% (3)
Eye3 Eyes3
Recognized by sight: Well, recognized after Patrick did me the favor of shooting the warts through a hand lens. Cool technique. The intensely hyphal wart base and the striate sides of the warts strongly suggests A. ravenelii. Patrick may be able to get the cap to open and produce spores. If he has any luck with this, we will have a way of checking up on my current guess. R

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
confirmed by miscroscopic anatomy of warts, etc.
By: R. E. Tulloss (ret)
2011-07-27 11:56:09 PDT (-0700)

Finally got to this one. It’s ravenelii…as if anyone doubted it.


We’ve got spores !!!
By: Patrick Harvey (pg_harvey)
2009-08-05 06:57:28 PDT (-0700)

I put the cap on paper for a couple days & have a nice thick spore print.
Sending that & dried material after the cap is done.

What’s the best thing to do with the spores — fold up the paper and send it,
or scrape them into a bottle?

bummer Patrick.
By: Debbie Viess (amanitarita)
2009-08-04 07:18:28 PDT (-0700)

like the rest of nature, those amanitas always bat last. Valiant attempt, tho!

you could try staking the cap (a pencil stuck in a bar of soap might work) in a natural position with moisture provided. Otherwise, it might just have to go to the land of semi-identified lepidellas…

By: Patrick Harvey (pg_harvey)
2009-08-04 07:02:50 PDT (-0700)

I had it propped up in a bowl with a towel around it, and it expanded
a bit by this morning, but overbalanced & the cap broke off! I cut the
partial veil off of the gills (creamy white) and put the cap on a sheet
of white paper to see if I can get ANY spores this early. Is that the
best I can do for now? I’ll take a few more pictures of what I have.

The stalk has been dried, partial veil was floccose and whiteer, and had very faint striations from the gills. Some of that fell onto the stalk, looked
kind of like powdery snow.

great close-ups! love the amanita landscapes.
By: Debbie Viess (amanitarita)
2009-08-03 16:23:03 PDT (-0700)

Patrick, I have gotten lepidellas to mature at home by placing them upright in a plastic cup, lined with damp sphagnum moss, and loosely covered by a second cup, with a microscope slide taped to the cup margin to catch the sporedrop. You will need a bucket for your giant, tho! And a cool place in which to leave it, no small feat in August in Missouri. Good luck, and thanks for sharing…

Created: 2009-08-02 20:22:13 PDT (-0700)
Last modified: 2017-12-28 17:06:48 PST (-0800)
Viewed: 298 times, last viewed: 2018-03-08 23:36:38 PST (-0800)
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