Observation 189607: Geopora arenicola (Lév.) Kers
When: 2014-11-23

Notes: On woodchips. The largest (open) cup about 6 cm.

One ascus: 200 × 20. Spores 21-25 × 16-18. Paraphyses 5 microns wide, 8 microns at the top. No reactions in IKI.

Proposed Names

28% (1)
Recognized by sight: Looks more like this
84% (1)
Recognized by sight: Called “Hole in the Ground” by Arora, with good reason.
Used references: Mushrooms Demystified; A Revision of the Tuberales of California, by Helen M. Gilkey

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Sounds like liveoak is a good possibility then Sava.
By: Daniel B. Wheeler (Tuberale)
2014-11-26 20:34:02 PST (-0800)

Canyon l iveoak extends north to about Grants Pass in Oregon, but is rarely (if ever) found north of Roseburg. That could be why this has been reported from California, but not in Oregon that I know of.

I wouldn’t rule out pine as a host, though. If the pine tree is 5-8 m tall, it could easily have mycorrhizae extending 10-15 m distant.

Elsa, Walt, Daniel
By: Sava Krstic (sava)
2014-11-26 19:56:38 PST (-0800)

Thank you for the id help.

Daniel, the area in front of our house has four live oaks. There is also a pine, about 10-15 m away from where these fungi were found. Mycorrhizal mushrooms do grow here (Hebeloma, Lactarius).

Chips may have acted as casing mixture,
By: Daniel B. Wheeler (Tuberale)
2014-11-26 16:28:41 PST (-0800)

but I strongly suspect all Geopora are mycorrhizal, Sava. Were there no conifers near this location?

Created: 2014-11-25 23:01:57 PST (-0800)
Last modified: 2014-11-26 16:27:11 PST (-0800)
Viewed: 58 times, last viewed: 2016-10-28 06:24:29 PDT (-0700)
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