When: 2011-10-21

Collection location: Breitenbush, Marion Co., Oregon, USA [Click for map]

Who: David Rust (incredulis)

Specimen available

Three specimens found growing under log, partially excavated by animal. Thick peridium, somewhat scaly (not smooth). Growing in mixed Doug fir, conifer forest near Breitenbush Hot Springs along Hwy 46. Three specimens, when cut: 1) chambered like a walnut, 2) yellow brown goo, the consistency of foie gras, 3) empty chamber with black gooey liquid remnant.

Species Lists


Proposed Names

-44% (3)
Used references: Truffles of North America
-10% (2)
Recognized by sight: tacky, gooey center turning to liquid. NO powdery spore mass.
Based on microscopic features: no spores, no fungal tissue apparent.
53% (3)
Recognized by sight

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= Observer’s choice
= Current consensus


Add Comment
I only looked at the “goo”
By: Debbie Viess (amanitarita)
2012-06-07 10:23:13 PDT (-0700)

and found nothing fungal/spores. etc.

David found these still mostly buried in the ground.

I don’t think that we saved them, beyond the first week, though. There were quite a few good taxonomists looking at these at the time, and we couldn’t agree what they were.

otherwise, the general gestalt (shape, layering) does resemble an Astraes.

earth star or something else
By: David Rust (incredulis)
2012-06-07 09:51:27 PDT (-0700)

Debbie took a look at this with the scope and could not find any fungal tissue.


Astraeus hygrometricus
By: Darvin DeShazer (darv)
2012-06-07 09:35:05 PDT (-0700)

I find these every year when truffle hunting. These were most likely aborted or arrested growth because of the animal digs. Cut in half photos of Astraeus hygrometricus are posted on MO.

No spores
By: David Rust (incredulis)
2011-11-07 21:16:48 PST (-0800)

We’re not really sure what the heck this was. I dried it, so we’ll see what happens when a mycologist gets to look at it.

By: Danny Miller (alpental)
2011-11-07 21:07:49 PST (-0800)

David, did any of the black goo yield spores? The caramel stuff was too far gone to get spores out of but some of the black stuff might still be salvagable?

I am not convinced that this is even fungal in origin…
By: Debbie Viess (amanitarita)
2011-10-27 08:21:39 PDT (-0700)