Observation 46195: Amanita sect. Caesareae Singer

When: 2010-06-01

Collection location: Creswell, Lane Co., Oregon, USA [Click for map]

Who: Daniel B. Wheeler (Tuberale)

No specimen available

Medium sized Amanita, large volval patch on cap remaining, some striations near edge of cap, volva easily separating from mushroom. CAP: flesh white, very slightly browning, 6 inches wide, cracking to near the pileus. STIPE: widest just under gills, narrowing to base, easily separated volva, typically remaining in the ground. Exteior flesh of stipe pure white, but interior flesh of stipe, especially near the base staining or bruising dark brown; stipe cracking deeply in at least one specimen. GILLS: pure white, slightly wavy, separating from stipe in age.

[admin – Sat Aug 14 01:59:45 +0000 2010]: Changed location name from ‘Creswell, Lane County, Oregon’ to ‘Creswell, Oregon, USA



Proposed Names

38% (3)
Recognized by sight: Volva easily separated, but still visible from hole in ground it came from. At least one specimen may be parasitized, as the gills look sealed with a white, cottony covering. This is obviously a spring Amanita, and was found associated with Oregon White oak. Elevation about 550 feet, +/-.
61% (2)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Looks like a sp. of sect. Caesareae…
By: R. E. Tulloss (ret)
2010-06-03 09:49:08 CDT (-0400)

Well, I think I’ll suggest that the specimen belongs in sect. Caesareae. May be it was mentioned by Dr. A. H. Smith in his unpublished Amanita manuscript…

Very best,


Based on volval remains
By: Daniel B. Wheeler (Tuberale)
2010-06-03 09:39:03 CDT (-0400)

I’d say the skirt was flared near the top, a feature that is not familiar to me. I tried to dig the specimens (there were 3 that I noticed) out of the ground with a truffle rake, and all I got was the stipe about 2 inches below ground. All were growing close together, and at least one of the specimens I picked up looks parasitized, but not all of them. Once I recognized it as an Amanita, I tried not to handle it anymore, since I was looking for truffles and didn’t want to contaminate any collection of hypogeous fungi.

Fascinating area: on driveway to collecting site, saw: wild turkey, bald eagles, Red-tailed hawk, goldfinches – all within a 2 mile drive from the main road. Property owner said he owned 1700 acres of mixed woods which he was running cattle on for 100 days out of the year. Looked like a wildlife sanctuary, except for all the cattle.

Fungi associated with Oregon White oak (Quercus garryana), but also near Douglas-fir, Madrone, Incense cedar. Quite a diverse area.

Very interesting…
By: R. E. Tulloss (ret)
2010-06-03 06:54:50 CDT (-0400)

No immediate recognition response comes to mind. This looks very interesting.

Very best,


Created: 2010-06-02 18:15:55 CDT (-0400)
Last modified: 2012-06-06 17:41:41 CDT (-0400)
Viewed: 77 times, last viewed: 2018-08-25 19:54:35 CDT (-0400)
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