Observation 100613: Amanita bisporigera G.F. Atk.

When: 2012-07-15

Collection location: Meramec State Park, Missouri, USA [Click for map]

Who: Patrick Harvey (pg_harvey)

No specimen available

Proposed Names

57% (1)
Recognized by sight: KOH gave faint yellow reaction, very slowly. Weather extremely dry—was
also suggested that KOH might have needed shaking up.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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KOH loses strength with time due to precipitation of the potassium in the form of a…
By: R. E. Tulloss (ret)
2012-07-19 15:51:24 CDT (-0500)

carbonate? I think. Certainly, this happens with CaOH solutions. So the strength of the solution may have fallen quite a bit over time. There are non-reactive white members of the Phalloideae such as A. elliptosperma and A. magnivelaris; however, the latter is not possible because it has a distinctly felted, large, off-white partial veil.


Created: 2012-07-15 15:50:38 CDT (-0500)
Last modified: 2012-07-15 15:54:29 CDT (-0500)
Viewed: 25 times, last viewed: 2017-08-31 16:16:44 CDT (-0500)
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