Observation 6767: Peziza arvernensis Roze & Boud.
When: 2008-02-10
Herbarium specimen reported

Notes: Ok, got these under the scope, and I kinda like how these photos turned out. The two micro-shots are of asci in Meltzers, and they display the blue tips characteristic of the Pezizalaes family.

The first shot is at 400x, of a bunch of asci’s, for some reason I couldn’t find many paraphases. I got one in another shot, and it is pretty boring, long and thin, about 5um wide, orangish. The ascis are kinda neat in that they are red-orange when there are no spores, but fade to clear as the spores mature.

The second shot is of an asci with mature spores at 1000×. The spores are “finely verrucose, and eguttulate”. The ave spore size of the 8 spores in this asci are 17.87 × 9.25 microns.

Taking this and going to the “Trial field key to the PEZIZACEAE in the Pacific Northwest”, and giving that a try I get to Peziza sylvestris. Which is what I had been calling these anyway… They list P. arvernensis as the prefered name.

Proposed Names

33% (3)
Recognized by sight
78% (2)
Eye3 Eyes3
Recognized by sight: Seems to be the most common species. Any reason not to call it this?

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Erin Page Blanchard (CureCat)
2008-02-12 04:31:37 EST (-0500)

I would call it Peziza sp., since it is notoriously difficult to identify Peziza to species without microscopic examination. There are just too many species which look so damn similar and prefer the same substrate.

I mean, you could call it by any species name which fits the description, but that’s mostly a stab in the dark.

Due to considerable ambiguity, I would reflect that uncertainty in the label.

Created: 2008-02-12 00:38:53 EST (-0500)
Last modified: 2008-03-08 19:43:29 EST (-0500)
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