Observation 26398: Amanita bisporigera G.F. Atk.
When: 2009-10-07
Herbarium specimen reported

Notes: Oak woods. Spores amyloid. Maybe one of the citrina types? Cap surface lacks the shiny appearance I expect in citrina. Also, difficult to characterize stalk base as collarlike or saclike. Spores sub globose to globose.

Proposed Names

57% (3)
Recognized by sight
81% (1)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Thanks David,
By: groundhog
2014-04-25 13:53:02 PDT (-0700)

This material has been accessioned to Rod’s herbarium.

Hmmm ….
By: Patrick Harvey (pg_harvey)
2010-01-23 13:18:11 PST (-0800)

Check this one out that just got posted:


I think you may be right about A. citrina … not that prominent
a cup on yours.

Let’s see what Dr. Tulloss says …

Reviewing these pics,
By: Dave in NE PA
2010-01-23 08:48:31 PST (-0800)

I recall now that what really bothered me was the yellow tint seen on the annulus. Seems a little odd for bisporigera.

A. bisporagera
By: Patrick Harvey (pg_harvey)
2009-10-20 09:49:08 PDT (-0700)

Gotta know this one, Dave! ;)

I think one of the differences of A. bisporagera from A. citrina is the proportion of the stalk — A. citrina have thinner stalks. No patches on the cap of A. bisporager either. SOME A. citrina also smell like potatos, but it seems not all do.

Created: 2009-10-08 16:57:51 PDT (-0700)
Last modified: 2009-10-18 18:44:56 PDT (-0700)
Viewed: 72 times, last viewed: 2016-10-24 08:52:54 PDT (-0700)
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