Observation 130702: Amanita sect. Vaginatae sensu Zhu L. Yang

When: 2012-06-25

Collection location: Sweet Valley, Pennsylvania, USA [Click for map]

Who: Phil Yeager (gunchky)

No specimen available

White mushroom with loosely fitting volva, terrestrial in mixed woods


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David and Phil, thanks for calling my attention…
By: R. E. Tulloss (ret)
2013-03-26 00:09:01 CDT (-0400)

to this posting and for offering dried material.

We’re working on fleshing out the data on more of the provisional names and temporary code names on the WAO site. We hope to have a significant focus on sect. Vaginatae for several months this year at least.


By: Phil Yeager (gunchky)
2013-03-25 20:01:03 CDT (-0400)

you are correct dave. A albocreata belongs to section Amanita: Jenkins. He also states that the volva is ocreate,and may have a slight free margin. This is quite different. Socks like that would fall down.

Phil, it’s not the colors…
By: Dave W (Dave W)
2013-03-25 19:22:44 CDT (-0400)

that lead one away from albocreata. It’s the basal structure. The mushroom seen in this observation has a saclike volva. This one very important feature does not match albocreata. I’d bet $20 (my personal limit :-) this isn’t an example of albocreata. Albocreata, despite lacking a ring and having a striate cap, is not placed into section Vaginatae.

By: Phil Yeager (gunchky)
2013-03-25 18:26:40 CDT (-0400)

I wish I would have taken a photo when I found this in the woods. A Albocreata has a white to pale yellow cap or a pale yellow disc. Good field notes would have also sufficed. Perhaps the colors faded by the time I took these photos, or I simply mididentified it. Source: Phillips p.17

By: Phil Yeager (gunchky)
2013-03-25 18:12:01 CDT (-0400)

for the inf. Rod. If you would like some of these, when I find them this year I can dry them and send you some samples.

At present, I have used the provisional name “rasitabula”…
By: R. E. Tulloss (ret)
2013-03-25 13:10:56 CDT (-0400)

for the eastern North American species that I know in sect. Vaginatae that is pure white and has a rather weakly structured sack (breaks up a bit; hence, possibly unlike the present taxon).


I have submitted some samples of rasitabula for sequencing, but have not heard back on that score at present. One of the samples sent came from MO#53151.
So I will be reporting back on that one in the future.

Very best,


Phil, the basal structure…
By: Dave W (Dave W)
2013-03-25 08:51:15 CDT (-0400)

for the mushroom in this obs is wrong for albocreata. Albocreata is in subsection Pantherinae. The volva should be a tight fitting “rolled sock.”

This is an interesting one. I thing section Vaginatae is correct. There is a white one that infrequently occurs here in eastern NA, but I don’t recall the species name.

Created: 2013-03-23 22:39:08 CDT (-0400)
Last modified: 2013-03-25 08:41:46 CDT (-0400)
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