Observation 193718: Amanita sect. Vaginatae sensu Zhu L. Yang
When: 2014-10-14
No herbarium specimen

Notes: Growing along much of the trail. No notes. Not sure if I have a spore print, will have to look through prints.

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Recognized by sight: See comments.

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Eye3 = Observer’s choice
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Comments

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Thank you, Linda Gail.
By: R. E. Tulloss (ret)
2014-12-15 19:06:22 PST (-0800)

R

Added my TBFA calendar
By: L G Price (LG_Price)
2014-12-15 16:30:20 PST (-0800)

It’s be added to my To Be Found Again calendar!

Cheers,

Linda Gail

Yes, David, that could be the case.
By: R. E. Tulloss (ret)
2014-12-15 13:14:49 PST (-0800)

You can see the gill edge tissue deposited on line that descend onto whatever it is we’re seeing. Considering the immaturity of the specimen those lines could be on the upper stipe and a partial veil or on the upperstipe and a wedge of limbus internus. Maybe microscopic examination of the tissue below what looks like an upper surface of a partial veil could resolve the issue…if the tissue is preserved in the hoped-for future collection.

I hope we get to learn more about this entity.

Very best,

Rod Tulloss

Rod, in the first photo…
By: Dave W (Dave W)
2014-12-15 13:00:53 PST (-0800)

could the ring/pseudo-ring be the result of an internal volval limb that’s clinging to the lower stipe? This seems to occur infrequently with some of the grisettes. It doesn’t look to me as though it’s the result of a partial veil. Looks more like the material is connected to the stipe base.

Thanks for the second note.
By: R. E. Tulloss (ret)
2014-12-15 10:41:38 PST (-0800)

I’m glad to hear you’ll keep an eye out for this one.

Very best,

Rod

Interesting and motivational, Deb.
By: R. E. Tulloss (ret)
2014-12-15 10:16:28 PST (-0800)

There is a European species (A. lactea) that sometimes has a more or less well-formed partial veil for a short time. I think I mentioned before that in SE Asia and central Africa there are a small number of species with Vaginatae DNA and no clamps on the basidia AND a persistent partial veil. So say the folks from Dr. Yang’s lab in Kunming.

Very best,

Rod

Thanks for the comments
By: L G Price (LG_Price)
2014-12-15 10:13:21 PST (-0800)

This is one I should easily be able to collect again next fall. I go to this location fairly often.

LG

there is another western vaginatae that looks like this:
By: Debbie Viess (amanitarita)
2014-12-15 09:50:09 PST (-0800)

Amanita velosa. It also often shows a “pseudo skirt” :

http://mushroomobserver.org/image/show_image/39928?obs=19744&q=2PkiT

I suspect that the same thing is happening here, and that this amanita is indeed a grisette, despite that bit of misleading tissue on the stipe.

Hopefully, you can collect it again and know for sure.

The cap is a unique color for spreta in my experience.
By: R. E. Tulloss (ret)
2014-12-15 09:40:26 PST (-0800)

The mature specimen seems to have lost the partial veil. Slugs?

Very best,

Rod

Now that is interesting, Linda Gail.
By: R. E. Tulloss (ret)
2014-12-15 09:36:45 PST (-0800)

There seems to be a partial veil separating from the gill edges in the first photo. This suggests you have something in the section Caesareae. Maybe something close (in one sense or another) to A. spreta. I need to look at the pictures a little more.

I hope you can find this one again.

Very best,

Rod

Created: 2014-12-15 09:14:09 PST (-0800)
Last modified: 2014-12-15 13:15:48 PST (-0800)
Viewed: 62 times, last viewed: 2016-10-25 18:52:23 PDT (-0700)
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