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29-06-2019 17:19

Petra Eimann Petra Eimann

Hello together, need some help. Found on 12.05.201

05-07-2019 16:06

Tanja Böhning Tanja Böhning

Hallo,   Mich ärgert wieder einer - gesammelt

29-06-2019 17:59

Castillo Joseba Castillo Joseba

De ayer en estiercol  vacunoTengo unas dudas con

05-07-2019 08:13

Marcel Vega

Hi, I am looking for 1 kilo of oranges from Icela

05-07-2019 07:11

Nicolas VAN VOOREN Nicolas VAN VOOREN

Dear all,I'm looking for a recent collection (<

04-07-2019 23:06

Carbone Matteo

Dear All,maybe someone here can help me.I'm trying

01-07-2019 07:51

PASCAL DUBOC

Bonjour en petite colonie sur vieux bois mort imb

04-07-2019 00:14

Valencia Lopez Francisco Javier

Hola a todos/asTengo estas Ombrophila recolectadas

04-07-2019 14:18

Tanja Böhning Tanja Böhning

Bonjour,   J´ai collecté un asco sur bois com

03-07-2019 14:56

Edvin Johannesen Edvin Johannesen

These tiny (0,5-1 mm) whitish to slightly pinkish

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Pyrenopeziza cf
Petra Eimann, 29-06-2019 17:19
Petra EimannHello together, need some help. Found on 12.05.2019 on the inner side of substrate maybe Typha. Frkp. < 0,5mm, I can't find free spores, but in some Asci you can see spores. No IKI reaction. Maybe Pyrenopeziza, but I have no Key, so maybe someone knows the species.
Greetings Petra
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Hans-Otto Baral, 29-06-2019 21:37
Hans-Otto Baral
Re : Pyrenopeziza cf
Hi Petra
the microscopic appearance is actually that of a Pyrenopeziza, but I would not trust without having seen living elements, especially paraphyses, in order to exclude a Mollisia.

The cuneate spores seem characteristic. For an identification a scale or spore size would be obligatory. I assume the spores are rather small. Inamyloid asci are rare, did you use Lugol or Mellzer? Your photo in iodine suggests an amyloid apical ring, isn't it?
Zotto
Petra Eimann, 30-06-2019 00:08
Petra Eimann
Re : Pyrenopeziza cf
Hi Zotto,
thank you for your opinion, unfortunately I did not find any free spores. The spores in the Ascus have the following dimensions:
5,45 x 1,82, 5,39 x 1,71, 4,75 x 1,85, 5,95 x 2,05, the scale I inserted into the picture. I used Lugol. Unfortunately I cannot judge the photo in iodine correctly whether it is an apical amyloid ring or not. There is an exsikkat available which I could send if necessary.
Petra
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Hans-Otto Baral, 30-06-2019 10:10
Hans-Otto Baral
Re : Pyrenopeziza cf
o.k., this means indeed small spores. With so small asci it is difficult to photograph the apical ring. Beter is to judge directly under the mic. Sorry, I have no time for that,´.

But a suggestion for a species I do not have.

My monocot folder of Pyrenopeziza gives spore sizes, and only one (on Acorus) has so small and narrow spores, but these are not tapered below.
Petra Eimann, 30-06-2019 13:51
Petra Eimann
Re : Pyrenopeziza cf
Thank you Zotto. Then it's still called Pyrenopeziza cf.

Petra
Petra Eimann, 06-07-2019 22:19
Petra Eimann
Re : Pyrenopeziza cf
Hi Zotto,
Is it possible that it is not Pyrenopeziza but Pirottaea imbricata?
LG Petra
Hans-Otto Baral, 06-07-2019 22:28
Hans-Otto Baral
Re : Pyrenopeziza cf
P. imbricata I know with apically pr laterally thick-walled hair-cells, I do not see them here.
Petra Eimann, 06-07-2019 23:07
Petra Eimann
Re : Pyrenopeziza cf
Thank you Zotto, I suppose another genus is out of the question. LG Petra