Observation 28383: Cystoderma granosum (Morgan) A.H. Sm. & Singer

When: 2009-11-15

Collection location: Sunfish Creek State Forest, Clarington, Ohio, USA [Click for map]

Who: Dan Molter (shroomydan)

No specimen available

The cap of this little mushroom is about the size of a quarter. The mushroom was growing from a rotting hardwood log in the stream bottom of a narrow hollow.

Species Lists



Proposed Names

53% (3)
Recognized by sight
33% (2)
Used references: As per Nathan’s comment.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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By: walt sturgeon (Mycowalt)
2010-04-14 17:39:00 MDT (-0600)

fits Cystoderma granosum which fruits on wood. It is usually a larger mushroom but I still think this is what you have here. Cystodermella is not a synonym and it is usually terrestrial or on moss.
Whether Cystoderma granosum should be moved to another genus is another issue and I do not know.

By: Nathan Wilson (nathan)
2009-11-19 07:50:58 MST (-0700)

Note that Cystoderma appears to be neuter and Cystodermella feminine so it’s Cystodermella granulosa (according to Index Fungorum).

By: walt sturgeon (Mycowalt)
2009-11-18 15:00:56 MST (-0700)

Whether the ID is correct or not, the site has Cystodermella granulosum as a synonym of Cystoderma granosum. Index fungorum disagrees. Cystoderma granosum is distinct from Cystoderma granulosum…

Created: 2009-11-18 09:07:19 MST (-0700)
Last modified: 2010-04-14 17:35:10 MDT (-0600)
Viewed: 121 times, last viewed: 2017-12-09 13:01:07 MST (-0700)
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