Found mostly buried near conifers ~ 7300 ft.
Caps up to 9.5 cm across.
Spores ~ 9.7-11.3 X 7.0-9.0 microns, broadly ellipsoid to ellipsoid and smooth.
Q(range) = 1.26-1.39.
I’m suggesting A. alpinicola over bleached A. aprica because these look very similar to the photos in the Mycotaxon description and also the spores are a closer match. A. alpinicola has slightly smaller and rounder spores than A. aprica.


Spores in congo red + KOH @ 1000X.

Proposed Names

29% (1)
Used references: Mycotaxon 132, pp 665-676

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

= Observer’s choice
= Current consensus


Add Comment
I like your observation on spore sizes.
By: R. E. Tulloss (ret)
2018-07-17 02:50:45 PDT (-0700)

Thanks for that.


The voucher material for this observation has been accessioned in our herbarium.
By: R. E. Tulloss (ret)
2018-07-17 02:46:47 PDT (-0700)

Thanks for sending this interesting material, Ron. I look forward to seeing what we can learn from it.

Very best,


That sounds like a good idea, Ron.
By: R. E. Tulloss (ret)
2018-07-02 15:24:52 PDT (-0700)

Thank you.

Very best,


I agree Rod…
By: Ron Pastorino (Ronpast)
2018-07-02 13:07:30 PDT (-0700)

Would you like me to put these and
in a mailer to NJ for some future work on non-Vaginatae western Amanitas?

It would be interesting to see what the DNA has to say.
By: R. E. Tulloss (ret)
2018-07-02 12:19:22 PDT (-0700)

Very best,


Created: 2018-06-30 19:44:16 PDT (-0700)
Last modified: 2018-07-17 02:50:45 PDT (-0700)
Viewed: 97 times, last viewed: 2019-08-23 15:35:58 PDT (-0700)
Show Log