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Rot Bojan

Hello!I've been working with this small fungus for

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Charles Aron Charles Aron

Hi All, Recently I found this orange Disco growin

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Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

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Lucian Clanet Lucian Clanet

Hello,I'm trying to find information about the Hyp

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Marc Detollenaere Marc Detollenaere

Dear Forum,On naked wood of Fagus, I found some ha

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Bometon Javier Bometon Javier

Habitat en el suelo, con presencia de Calluna mult

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Lothar Krieglsteiner Lothar Krieglsteiner

this fluffy anamorph was repeatedly found on decid

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Josep Torres Josep Torres

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Simon Gurtner Simon Gurtner

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Bernard CLESSE Bernard CLESSE

Pourriez-vous me confirmer ma détermination de ce

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A dark peziza...
Martin Bemmann, 24-09-2010 23:40
Martin BemmannBonsoir and good evening,

I got some collections of pezizas from a friend for determination. I am not very familiar with this genus since my forest is on acid ground (sandstone) and I do find them rarely. But she lives in a calcareous region (close by) and collects them in abundance.
I stuck up with determination right at the first specimen. I went through different keys (Hohmeyer, Nordic Macromycetes) and stranded allways at P. lividula. Which doesn't fit, at least considering shape of spores beeing not fusiform or subf. at all. My problem with those keys is that my specimen doesn't show any milk/latex. They were harvested only few days ago and kept refrigerated.

So here is what I have:
Apothecia are blackish darkbrown with a distinct purple to violaceous tint, up to 4.5 cm in dm.
Asci are IKI+ and c. 375x15.5 µm in size.
Paraphyses are septated and slightly moniliform (are they?) with a medium width of 6.5 µm, with some
yellow-brownish drops in the slightly clavate apical section.
Asci are ovoid with predominantly one oildrop and covered with an even ornamentation of rounded warts (16.6-18.1 x 9-10.5 µm).
What I have seen of the textura of the excipulum was a globulosa.

I will be happy to hear some suggestions. Maybe it is just a trivial one...

Best regards,

Martin

And now some pictures:
  • message #12941
Martin Bemmann, 24-09-2010 23:41
Martin Bemmann
Re:A dark peziza...
an ascus:
  • message #12942
Martin Bemmann, 24-09-2010 23:41
Martin Bemmann
Re:A dark peziza...
an ascus in Lugol:
  • message #12943
Martin Bemmann, 24-09-2010 23:45
Martin Bemmann
Re:A dark peziza...
Paraphyses:
  • message #12944
Martin Bemmann, 24-09-2010 23:45
Martin Bemmann
Re:A dark peziza...
Spores in water:
  • message #12945
Martin Bemmann, 24-09-2010 23:45
Martin Bemmann
Re:A dark peziza...
Spores in Lugol:
  • message #12946
Martin Bemmann, 24-09-2010 23:46
Martin Bemmann
Re:A dark peziza...
And one in CB:
  • message #12947
René Dougoud, 25-09-2010 07:35
Re:A dark peziza...
Cher Collègue,

Il s'agit très probablement de Peziza depressa Pers.: Fr.

La couleur de l'hyménium est assez type, brun rougeâtre. Sur le frais et les spécimens normalement hydratés, la chair exsude un liquide hyalin, assez abondant. Microscopiquement, les ascospores présentent des verrue arrondies et aussi pointues, avec une grande guttule. Les dimensions données sont correctes pour cette espèce. Le médulla est de texture intricata et l'exc. ectal t. angularis.

Cordialement

René
Martin Bemmann, 25-09-2010 16:06
Martin Bemmann
Re:A dark peziza...
Dear René,

thank you very much! This description fits very good to this collection.


Best regards,

Martin
Martin Bemmann, 26-09-2010 18:03
Martin Bemmann
Re:A dark peziza...
Addendum:

I don't want to blame the keys I used, I have just ignored (not seen) the junction 39d in Hohmeyer's key...

Best regards,

Martin