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30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

30-06-2025 12:09

Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

30-06-2025 06:57

Ethan Crenson

Hi all, Another find by a friend yesterday in Bro

30-06-2025 19:05

ALAIN BOUVIER

Bonjour à toutes et à tousJe cherche à lire l'a

30-06-2025 14:45

Götz Palfner Götz Palfner

This is a quite common species on Nothofagus wood

25-06-2025 16:56

Philippe PELLICIER

Bonjour, pensez-vous que S. ceijpii soit le nom co

29-06-2025 18:11

Ethan Crenson

Hello all, A friend found this disco yesterday in

28-06-2025 17:10

Peter Welt Peter Welt

I'm looking for: RANALLI, M.E., GAMUNDÍ, I.J. 19

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

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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