When: 2010-06-05

Collection location: Yosemite National Park, California, USA [Click for map]

Who: Debbie Viess (amanitarita)

Specimen available

Species Lists


1000x in Meltzers.

Proposed Names

-53% (4)
Recognized by sight: sessile black cup.
67% (4)
Recognized by sight
Based on microscopic features: Globose spores

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= Observer’s choice
= Current consensus


Add Comment
nice to hone in on a species name…
By: Debbie Viess (amanitarita)
2010-06-17 11:23:25 CDT (-0400)

any more spore details other than “round?” size, fer instance? is round a unique character in Sierra black cups?

also, it was curious how these round spores collapsed when the fruit body was dried, forming a three dimensional cup, much like a deflated rubber ball with one side pushed in. Was this due to the drying process? They look almost like giant red blood cells! Details can be seen in posted micrograph.