Observation 140296: Amanita sect. Vaginatae sensu Zhu L. Yang

Found on very poor soil among mainly Hickory trees with some Oak, Maple, and a few scattered Poplar and Hemlocks.Cap diameter was 40-70mm. cap 4-7mm thick. and brownish-yellow to brownish-orange. Margin incurved to decurved. Cap was hemispherical with a mammilate, reddish-brown umbo. The pileas became applanate and umbilicate. Striations were 8/20, 10/24, and 12/35. The cap was tacky and shinyNo surface staining, taste bland, possibly oily. Context white with no staining. The context was thicker at the stipe and thinned rapidly towards the margin. It looked as if the context never reached the margin and was simply cuticule and gills. The pileus seemed brittle and spli upon drying. Lamellae were white including the faces. Their breadth was 2-6mm, approx. 2mm at the stipe and 6mm at the margin. The gills looked adnate and I could see seceeding lines at stipe apex. Stipe 90- 150mm, and no stainingSome of the lamellulae were about 1mm near the margin , while others were less than 1/2 the length of the gills. The gills were crowded with some minute serrations on their edges. Stipe was white, hollow, with fine brown hairs and very faint lines near the base. The sac was tough, white, attached most of its length, and had a distance of 25-38mm from the base to its top. The sac was baglike, and peeled easily down to a thicker-for lack of a better word- “volva” or some form of bulb. From there downwards it was firmly attached.

Proposed Names

29% (1)
Used references: Mushrooms of West Virginia…………..(Roody)

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Eye3 = Observer’s choice
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Thanks Rod
By: Phil Yeager (gunchky)
2013-08-12 02:41:29 SAST (+0200)

Just taking a flyer. Looked good in Roody.

Amanita umbrinolutea is Eurasian so far as I know.
By: R. E. Tulloss (ret)
2013-08-11 05:21:31 SAST (+0200)

Without aid from molecular studies, it looks at the moment as though A. umbrinolutea ranges from Europe to the Himalayas. Maybe the range is more restricted than that. The colors are more in contrast than are the colors of the zones in this specimen. The dark color is a deeper reddish brown and the light color is a paler yellowish tan without an orangish component.

There are several zonate-capped species in sect. Vaginatae in eastern North America; and my impression is that none of them is like the material of __umbrinolutea that I have seen from Europe, Pakistan, and Himalayan foothills of northern India.

I hope to have something to say about your material later.

Very best,


Thank you, Phil.
By: R. E. Tulloss (ret)
2013-07-30 04:10:05 SAST (+0200)

I received the dried material from this observation.

If we can extract information, I’ll let you know.

If I have difficulty extracting information I’ll let you know what I think might be the cause of the problem.

Very best,


I will send
By: Phil Yeager (gunchky)
2013-07-19 21:28:53 SAST (+0200)

the dried material to you in a day or two. Thanks for checking this obs.

It looks like you followed the outline of my notes form in writing your notes.
By: R. E. Tulloss (ret)
2013-07-18 01:29:10 SAST (+0200)

I really appreciate that. It improves the value of the observation a great deal.


Hello, Phil.
By: R. E. Tulloss (ret)
2013-07-18 01:28:03 SAST (+0200)

I see only volval fragments at the base of the stems that I checked out in your pix.

I do think that you have placed the species in the right section. But I cannot say that I have ever seen this species previously.

If you’ve the time to send the dried material. I’ll try to get to it; but it may be awhile before I can do anything but check the spore measurements.

Very best,


Created: 2013-07-18 00:43:19 SAST (+0200)
Last modified: 2018-01-04 01:06:46 SAST (+0200)
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