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This tiny, rather "rough" erumpent asco was found

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Peziza cerea (Suffolk, UK, April 2015)
Martin Cooper, 06-05-2015 17:33
Martin CooperHi,
I am new to this site, so please forgive any mistakes.
I think this fungus is Peziza cerea.
Is that correct?
Best wishes,
Martin
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Michel Hairaud, 06-05-2015 19:47
Michel Hairaud
Re : Peziza cerea (Suffolk, UK, April 2015)

Hi Martin,


bienvenue sur le forum Ascofrance !


If you follow Hansen & al. 2002 , P. cerea is synonymous to P. varia.


I wonder whether the measured spores are mature as they are still in the ascus , which may explain they are shorter as they should be for P. varia


Amitiés


Michel

Martin Cooper, 06-05-2015 21:54
Martin Cooper
Re : Peziza cerea (Suffolk, UK, April 2015)
Hi Michel, Thanks for the reply. I think you may be right about the spores. I will see if I can find a better sample of mature spores.
Amitiés
Martin
Martin Cooper, 07-05-2015 16:36
Martin Cooper
Re : Peziza cerea (Suffolk, UK, April 2015)
I looked at the spores that fell from this fungus and they are indeed bigger.

The Piximetre data is as follows (Classical formula, 80% of measurements):
  (13.8) 14.7 - 15.9 (17) x (7.8) 9.2 - 10.6 (10.9) µm
  Q = (1.4) 1.43 - 1.7 (1.9) ; N = 50
  Me = 15.3 x 10 µm ; Qe = 1.5

From that can we say it is definitely Peziza varia (= cerea)?

Best wishes,
Martin

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Michel Hairaud, 07-05-2015 21:30
Michel Hairaud
Re : Peziza cerea (Suffolk, UK, April 2015)

Martin, these measurements actually match P. varia's, to my knowledge.


In many collections, fortoulism in paraphyses can be observed in P. varia, but this character (which I cannot observe on your pics ) is not compulsery


Amitiés


Michel

Martin Cooper, 07-05-2015 22:25
Martin Cooper
Re : Peziza cerea (Suffolk, UK, April 2015)
Thanks Michel!