Observation 185686: Peziza Dill. ex Fr.
When: 2014-10-26
(50.4° -117.1167° 680m)
No herbarium specimen

Notes: I found this last week (mid October) in an old growth, mixed but primarily coniferous (mainly cedar) forest in the Kootenay (S.E.) region of British Columbia, in the shade, in a mossy, moist area, next to a decaying old tree. The mushroom measured about 8" across.
The unique characteristic about this fungus, and hence my interest, was that when I lightly touched it to remove a leaf before photographing, it released a fine cloud of white spores which disappeared in a few seconds. It was hard to tell exactly where these originated as the fungus was very close to the ground but they must have been released from underneath. It only did this once despite prodding and cajoling for a repeat performance.
As a newbie I’ve only seen this occur in puffballs. Is this common? Can anyone comment further on the species and this characteristic?

Species Lists


IMGP1967 puffed-spores.JPG
released spore cloud when lightly touched

Proposed Names

56% (1)
Recognized by sight
Used references: Arora, Mushrooms Demystified. Likely Peziza repandum.
28% (1)
Used references: Arora, Mushrooms Demystified. Should have a short stipe on the underside, which cannot be verified with this photograph.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Hello Tuberal.
2014-10-27 19:04:59 CDT (-0400)
You are welcome, Wayne.
By: Daniel B. Wheeler (Tuberale)
2014-10-27 13:38:53 CDT (-0400)

I think Peziza is correct, possibly Peziza repandum. Sometimes this becomes rather massive, especially if fruiting from wood.

Something that would help: photograph the base, if you dig it. There could be a short pseudostipe near the center of the fungus. This is easy to miss, and often breaks off if it is growing on wood or woody debris.

By: Daniel B. Wheeler (Tuberale)
2014-10-27 13:15:46 CDT (-0400)

not so likely, IMO. If you look closer at the photo from FungalJungal, you’ll see the larger ridges/bumps/veins in the surface of the fungus, near the center. This has no apparent surface bumps/ridges/veins.

By: Wayne Logus (zorgon)
2014-10-26 23:31:51 CDT (-0400)

Many thanks for your comments Daniel, and the identification and thoughts by others. My size estimate was just from memory – it could have been a bit smaller. There were two others nearby that were slightly smaller but identical shape. One of them also produced spores when touched but a photo didn’t show anything really. I’ll definitely go back to the area again next year and see if I can find others. I’ll be more diligent next time; I’m still learning.
It’s an amazing region and it’s often hard to even walk without stepping on other, very small mushrooms and fungi. I frequently only become aware of others when I more closely look at my photos after the fact (see 185689).

By: Daniel B. Wheeler (Tuberale)
2014-10-26 18:31:00 CDT (-0400)

or cup fungi are flattened fungi which produce spores on the inside (or upper surface). They can produce a “cloud of white spores” or even other-colored spores from asci in the upper hymenium. The leaf might have held the spores capped until released, when the “cloud” emerged.

The only unusual thing about your observation, Wayne, is the size: about 8" across. Most Peziza are slightly smaller, and often cup-shaped, except at maturity.

Created: 2014-10-26 15:20:03 CDT (-0400)
Last modified: 2014-10-27 15:18:53 CDT (-0400)
Viewed: 63 times, last viewed: 2017-06-29 14:41:42 CDT (-0400)
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