Observation 139473: Amanita aestivalis Singer ex Singer
When: 2013-07-10

Proposed Names

45% (2)
Recognized by sight: Split basal bulb.
57% (1)
Eye3 Eyes3
Recognized by sight: This past week I’ve had the opportunity to observe this taxon frequently. I think A. aestivalis is promising because of the very pale, non-streaked caps in these specimens. Universal veil tissue is usually absent from the cap, and when present is thinly membranous and sparse. These seem more gracile than A. brunnescens with long, thinner stems and smaller on average diameter caps. Staining is vinaceus brown on all parts, and slow to occur or not occurring at all. Finally these occur in a forest that is primarily beech/hemlock during the hot part of the summer; on the early side of the seasonal A. brunnescens flush. Whether any of these observations distinguish this from A. brunnescens is another matter. I’m inclined to believe there’s a difference; at least enough to make it a varietal form.

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thanks Eric,
By: groundhog
2014-04-18 11:16:01 PDT (-0700)

This material has been recieved and accessioned to Rod’s herbarium. We have scheduled it for DNA sequencing.

All nice photos Eric
By: damon brunette (damonbrunette)
2013-07-14 19:44:59 PDT (-0700)
You’re welcome Rod.
By: Eric Smith (esmith)
2013-07-14 17:50:09 PDT (-0700)

I added some notes.

Thank you, Eric.
By: R. E. Tulloss (ret)
2013-07-14 06:16:46 PDT (-0700)

Very best,


Yes Rod,
By: Eric Smith (esmith)
2013-07-14 04:50:15 PDT (-0700)

you’re more than welcome to them along with the rest of the rubescent material I’m collecting.

What a lovely grouping, Eric.
By: R. E. Tulloss (ret)
2013-07-11 20:02:19 PDT (-0700)

Frankly, I don’t know which of the names to apply at the moment as I have mentioned previously on MO. There are distinction is cap coloring, speed of bruising/staining, and color of bruising/staining. I have updated the discussion on the end of the techtab of the A. aestivalis taxon page on WAO to reflect the uncertain state of the name.

The photograph of this collection is really nice. In order to use it on WAO, my rule is that I have to have seen the voucher collection. May I?

Very best,


Created: 2013-07-10 19:58:58 PDT (-0700)
Last modified: 2013-07-11 19:43:54 PDT (-0700)
Viewed: 118 times, last viewed: 2017-06-16 04:12:23 PDT (-0700)
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