Observation 170591: Amanita sect. Vaginatae sensu Zhu L. Yang
When: 2014-07-18
No herbarium specimen

Notes: Found near White Oak. Pileus 40 mm dia. × 55 mm high, dark brown with a light yellow orange band at the end of the striations. Striations 18/55, no appendicalar remnants on margin. No odor, staining or bruising. Did not taste it. Pileal context white, no staining. Cap conical, dry and shiny. Lamellae white in side view, but pinkish en masse, crowded and their edges appeared to be serrulate. They were 2mm wide at the apex of the stipe and 2mm at the margin, but 5mm wide in the middle. The lamellulae were of different lenghts; some were 7mm long from the margin; others were11 and 19 mm long. The stipe was 195mm long and 17mm at midstipe, stuffed to hollow with cottony-like fibers. Stipe context white, unchanging except worm holes were stained orangish. The volval sac was attached to the base and adherrent at its top, and measured 60mm from the base to its highest point of attachment, was membranous and white, no inner limb present.

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Comments

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cool.
By: Debbie Viess (amanitarita)
2017-01-11 16:54:11 PST (-0800)

I wondered why it had popped.

Rod
By: Phil (gunchky)
2017-01-11 16:41:33 PST (-0800)

Many thanks for your kind reply.

Yes, you did send the voucher material for this observation.
By: R. E. Tulloss (ret)
2017-01-11 14:33:42 PST (-0800)

It is RET 642-8 in my herbarium.

With no mention of the mushroomobserver number on the label (I don’t know why…it’s there now!), the material was a little difficult to locate in the data base. The notes on our label say “by white oak” just as is mentioned on this page. Also the collection date matches, and the material was sent by you. Other evidence includes the dark cap and gray stem.

This material was sampled for DNA sequencing and submitted for same in June, 2016. We have not yet heard on any results of sequencing; however, we do expect to receive sequences for the spring-summer sample submissions (where sequences were successfully derived) by the end of May (if all goes well). we are processing sequence data from the first sequences shipped to us from Spring-Summer 2016 right now.

I’m glad I have some positive movement to report.

Thanks for sending us this material.

Very best,

Rod

Hi Deb
By: Phil (gunchky)
2017-01-11 13:57:43 PST (-0800)

Margin striate and partial veil intact in photo. When I found this I believe I mailed it to Rod, so he may have some info on it. I reposted it because I saw a look alike on MO today. My notes on the stipe show a length of ~ 7.66" for a relatively young specimen. I wonder how tall it would be at maturity?

so
By: Debbie Viess (amanitarita)
2017-01-11 12:05:55 PST (-0800)

any further info on this grisette? I have also found grisettes grossly similar to the European umbrinolutea here in CA, but I doubt that either of ours are the same species.

what makes you now think that it is that VA grisette?

DNA match? and if so, why the low confidence level?

I swear, these grisette IDs have the ability to drive us all mad!!!!!

Hello Rod
By: Phil (gunchky)
2014-07-19 19:11:23 PDT (-0700)

I still have this material and will finish dehydrating it. I can send it to you early next week. The reason I called it by this name is that I used Mushrooms of West Virginia and the Central Appalachians by Roody. I’m of the opinion that this species is present in the western hemisphere according to Roody. I actually wanted to call it Amanita ameriumbrinolutea, but since I’m not a mycologist, I don’t believe that I am qualified to name any organism. If you would e-mail your address to me I will gladly send this to you. I’ll have to remember to save your address for future mailings. Thanks again for your interest and comment. Phil

Hello, Phil.
By: R. E. Tulloss (ret)
2014-07-19 17:40:47 PDT (-0700)

So far as I know __umbrinolutea has a range extending from Europe to the western Himalayas. If you get some good material of the present species dried, I’d be glad to take a look and compare it with material of umbrinolutea that I have previously examined.

Very best,

Rod

Created: 2014-07-19 12:22:36 PDT (-0700)
Last modified: 2017-01-11 14:06:13 PST (-0800)
Viewed: 96 times, last viewed: 2017-03-26 14:24:26 PDT (-0700)
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