Observation 33116: Amanita constricta Thiers & Ammirati
When: 2010-02-03
Who: BakerSt10
No herbarium specimen

Proposed Names

-27% (3)
Recognized by sight: 30 cm long stipe
88% (4)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I agree…
By: Debbie Viess (amanitarita)
2010-02-04 07:51:53 PST (-0800)

constricta is common at Huck, it’s large, and it shows a similar reddening on the volva to pachycolea. The volva isn’t as thick, is constricted at the base and as Rod pointed out, often shows a gray lining.

Pachycolea usually has a much darker, two-toned umbonate cap, coupled with extremely long and deep striations at the cap edge.

Thanks Rod!
By: BakerSt10
2010-02-04 06:20:41 PST (-0800)

I had looked at constricta.But had a hard time noticing the grey signs. Thanks for the information.

The gills look as if they had turned gray with age.
By: R. E. Tulloss (ret)
2010-02-03 16:54:00 PST (-0800)

Would you agree? This usually happens in species of sect. Vaginatae with weakly structured and graying volval sacks…or so I have come to expect. This suggests a determination something like A. constricta…even though the volval sac isn’t gray in all photos (but look at the cross-section, especially the upper part of the limb on the side of the stem where the limb is longest. That seems pretty gray to me.


Created: 2010-02-03 13:07:52 PST (-0800)
Last modified: 2010-02-03 13:07:52 PST (-0800)
Viewed: 131 times, last viewed: 2017-06-06 15:44:10 PDT (-0700)
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