Observation 207525: Peziza Dill. ex Fr.

When: 2015-06-23

Collection location: Westline, Pennsylvania, USA [Click for map]

Who: Garrett Taylor (cappy)

No specimen available

Found on the ground in bottom land in pretty thick Hemlock, maybe Birch, Beech, Red Maple.

Proposed Names

76% (2)
Recognized by sight
Based on microscopic features: 8 spores in Ascus,14um length, 7um width
Based on chemical features: Amyloid opercula
35% (3)
Recognized by sight: Matches spore size in Arora.
Used references: Arora, Mushrooms Demystified
89% (2)
Based on microscopic features

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Garrett Taylor (cappy)
2015-06-29 10:20:49 CDT (-0500)

this was fresh material. Maybe a bit on the old side, but not decomposed in any way.

By: Nicolas VAN VOOREN (NicoV)
2015-06-29 08:37:59 CDT (-0500)

This is a textura globulosa/subangularis. I suppose you made this observation on rehydrated material. In this case, a textura globulosa is often deformed and may look a bit as a textura angularis.

Thanks again
By: Garrett Taylor (cappy)
2015-06-29 08:09:57 CDT (-0500)

I just uploaded an interior textura photo, looks almost globose or angularis?

By: Nicolas VAN VOOREN (NicoV)
2015-06-29 07:37:20 CDT (-0500)

No problem, Garrett, the mycological terminology isn’t always easy ;-)
I suggest to donwload the following paper:
It’s a guide for the study of discomycete, written by my friend René Dougoud. The text is in French, but with illustrations that can help. You will be probably interested in the pages 84-85 that explain the different type of cells structure of the flesh (drawings & photos), very useful when you study Peziza species.

By: Garrett Taylor (cappy)
2015-06-29 07:22:54 CDT (-0500)

for the tip on spore observation in ascos, I guess I need to take some waxed paper along next time and more carefully collect whole specimens for spore printing purposes. I guess my gellified remark was regarding that it didn’t seem to be exuding moisture but wasn’t very brittle either. I have just started really using my scope.

Gelified flesh?
By: Nicolas VAN VOOREN (NicoV)
2015-06-29 03:41:40 CDT (-0500)

just another remark: you said “… normal Peziza, gelatinous consistency.” In normal cases, the flesh of Peziza species is not gelified. This appears in very few species. Usually, the flesh is aqueous, and sometimes a bit “milky” when latex is produced.

By: Nicolas VAN VOOREN (NicoV)
2015-06-29 03:01:43 CDT (-0500)

Daniel, I don’t understand your remark. The photo 2 shows clearly warted ascospores, although this is not possible to describe properly the ornamentation. This is not visible on the other photographs because the ascospores are immature.
To evaluate correctly the spore ornamentation, it’s important to observe free ascospores (from a spore print if possible) in cotton blue reagent. This is the best process.

By: Daniel B. Wheeler (Tuberale)
2015-06-26 12:32:05 CDT (-0500)

not apparent on any photo, except No. 2. Where do you see them again, Nicolas?

No noticable juice.
By: Garrett Taylor (cappy)
2015-06-25 15:30:19 CDT (-0500)

I just cut a small peice to take with for the microscopy. I didn’t notice any exudate. It seemed of a normal Peziza, gelatinous consistency.

Peziza, yes but…
By: Nicolas VAN VOOREN (NicoV)
2015-06-25 03:01:30 CDT (-0500)

… probably not P. domiciliana which is a member of the Peziza core group. This species has finely warted ascospores. In your case, after the first microscopic photo, the ascospores are warted with rather “big” warts.
Did you note if the flesh exsudates a juice or latex when cut?

Peziza domiciliana
By: Garrett Taylor (cappy)
2015-06-24 21:07:12 CDT (-0500)

I looked at that one, but the species name threw me off track. It certainly matches the description in Beug, Bessettes’ book.

Created: 2015-06-24 09:13:36 CDT (-0500)
Last modified: 2015-06-29 08:06:24 CDT (-0500)
Viewed: 146 times, last viewed: 2017-08-27 03:11:30 CDT (-0500)
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