Observation 59983: Crustoderma Parmasto

When: 2010-11-28

Collection location: Salt Point State Park, Sonoma Co., California, USA [Click for map]

Who: Alan Rockefeller (Alan Rockefeller)

No specimen available

Species Lists


basidiocarp, 40x
cystidia on the hymenophore
cystidia on the hymenophore
cystidia on the hymenophore

Proposed Names

-45% (2)
Recognized by sight
31% (2)
Recognized by sight
64% (3)
Used references: Corticiaceae s.l., Fungi Europaei Vol. 12
Based on microscopic features: Cystidia look similar and so do the spores.

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= Observer’s choice
= Current consensus


Add Comment
By: Alan Rockefeller (Alan Rockefeller)
2010-12-03 16:44:58 CST (-0500)

I did not see any green when I looked at this under the scope. I added the micrographs last night. I did see one thing that looked like a basidia but I am not 100% sure.

Fair enough
By: Jason Hollinger (jason)
2010-12-03 08:29:28 CST (-0500)

…but I still don’t think it’s a lichen. I’ve never seen or heard of any like it, at least. Since you have a specimen, you can verify trivially: slice it open and look for algae. A green layer should be visible even at 10x or 30×. Certainly, a section should show green-filled cells at 1000×. Maybe you’ll find basidia instead.

By: Alan Rockefeller (Alan Rockefeller)
2010-12-03 02:29:52 CST (-0500)

I do not think it is Stereum, its more of a crust. I have a sample if anyone wants it. I am not aware of any bright yellow Stereum. The color was striking.

By: Jason Hollinger (jason)
2010-12-02 12:27:09 CST (-0500)

Pretty sure this isn’t a lichen, at least.