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24-01-2013 13:29

Nina Filippova

Two quite similar externally tiny discs, both on c

24-01-2013 13:40

Nina Filippova

2) probably Eriopezia, but subiculum not pronounce

21-01-2013 18:11

Roland Labbé

Bonjour !Voici un mini disco noir. Les noms de ge

24-01-2013 18:13

Hans-Otto Baral Hans-Otto Baral

Hi allI would like to ask if anybody of you has a

21-01-2013 17:36

Alex Akulov Alex Akulov

Dear Friends,can you help me with identification o

23-01-2013 18:46

Esquivel-Rios Eduardo

Hi all.We found  this fungi in Persea leaves, loo

22-01-2013 22:32

Martinez Mariana

Hi all! I found this fungus growing on trees or lo

22-01-2013 18:52

Salvador Tello

Hola a todos.Crecía sobre madera seca de Ulex arg

21-01-2013 21:30

Francisco Calaça Francisco Calaça

Dear colleagues,Recently I found this specie of As

21-01-2013 22:45

Nick Aplin

Salut à tous,I hope someone can help me put a nam

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Polydesmia sp.
Nina Filippova, 24-01-2013 13:29
Two quite similar externally tiny discs, both on coniferous decaying wood in wet places (in bogs). They turned to be different in microfeatures, but i had not succeed in clear id. even to genuses. Probably someone could be interested.

1) probably Polydesmia, but asci with inamyloid pore, and spores nonseptate, otherwise paraphyses propoloid, and if to follow the key of Korf (1978) it may be P. fructicola.

Apothecia pustulate to flat-cupulate, grayish, translucent, up to 400 x 100 mk, hymenium minutely rough, outside and edge appear smooth.
Excipulum textura prismatica, outer hyphae end by ventricose or clavate cells (hairs); asci clavate, clamped, with inamyloid pore, 54 x 7 mk; spores ellipsoid and curved (allantoid), non-septate, with large irregular guttulae, 11,6 (10-13,1) x 3,4 (3,1-3,9) mk; paraphyses irregularly bulged in different parts, branched 2-3 times, curved at the tips.


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Hans-Otto Baral, 24-01-2013 15:08
Hans-Otto Baral
Re : Polydesmia sp.
Dear Nina

 Polydesmia has 3-septate spores and amyloid asci, and these apically curved paraphyses are also untypical of that genus.

Do you have the fungus fresh? Please do photos in water, that would greatly help.  Possibly there are guttules in the paraphyses that disappear when mounting in such lethal agent.

Zotto
Nina Filippova, 24-01-2013 21:16
Re : Polydesmia sp.
Here some more pictures in water, paraphyses have no guttules, but spores with big oil drops or full oily content. Asci with rather thin stalk, i did not notice it before.
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Hans-Otto Baral, 24-01-2013 22:30
Hans-Otto Baral
Re : Polydesmia sp.
Good photos, but regrettably all in dead state. I assume the fungus was collected some weeks ago and was dried? Then these guttules disappear irreversibly.

I am sorry I have no idea of a genus. My idea was something around Naeviopsis, but I do not believe.

Zotto