Observation 31919: Agaricus xanthodermus Genev.

When: 2010-01-12

Collection location: San Mateo, California, USA [Click for map]

Who: Tom (LanLord)

No specimen available

Very rapidly bright yellow staining on the cap (1 to 2 seconds) and somewhat slower at the tip of the stem (10 to 15 seconds) and not as bright.

Relatively large, 16cm to 18cm when partially expanded.

Proposed Names

28% (1)
Recognized by sight
57% (1)
Recognized by sight: Immediate yellow staining, thick annulus

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2010-01-12 19:26:10 PST (-0800)
Last modified: 2010-01-12 19:26:10 PST (-0800)
Viewed: 18 times, last viewed: 2017-06-06 07:03:02 PDT (-0700)
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