Observation 32444: Dendrocollybia racemosa (Pers.) R.H. Petersen & Redhead

When: 2010-01-24

Collection location: Healdsburg, California, USA [Click for map]

Who: Darvin DeShazer (darv)

No specimen available

Might be the same as http://mushroomobserver.org/32384.
And also this observation: http://mushroomobserver.org/32770.
On an old rotten Russula or Lactarius, cap 16 cm in diameter.
I brought it home, but it won’t last long.
Cut one on half. It was rock hard and difficult to cut.
Looked at part of it under the scope; no spores.
It might be a sclerotium for a mycoparasite, something similar to Collybia tuberosa or C. cookei.
Planted the remains, gills down, in my backyard. Hoping that something will fruit from the sclerotium.
Update – July 2012
Two winters have past by and no sign of a fruitbody where these sclerotia were planted. Looks like this experiment failed to fruit.

Species Lists


Cut surface
Cut surface

Proposed Names

54% (3)
Eye3 Eyes3
Recognized by sight: Blackish sclerotium – see A revision of Collybia website by Roy Halling

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
stick it under the scope, Darv!
By: Debbie Viess (amanitarita)
2010-01-24 11:22:10 CST (-0500)

and maybe dry one, too.
is it a fungus? with a cap? or a myxo, as was also suggested? very weird, and obviously out and about in central CA right now.

By: Erin Page Blanchard (CureCat)
2010-01-24 00:18:44 CST (-0500)

Yup! That looks just the same to me… I wonder what it is.

Created: 2010-01-24 00:07:05 CST (-0500)
Last modified: 2012-07-17 17:04:34 CDT (-0400)
Viewed: 110 times, last viewed: 2017-12-13 09:35:24 CST (-0500)
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