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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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autour de / around Lachnum
Yannick Mourgues, 18-05-2009 21:47
Yannick MourguesBonsoir à tous.

Voici encore une récolte de Lachnum sans doute L. virgineum, sur bois de Fagus décortiqué bien décomposé.

Spores 7,7-9,6X2,3-3,2 um, Q=2,8-3,6 hyalines, lisses, parfois 1 cloison, sans guttules.
Asques avec boucles, octosporiques, 65-75X5-6 um, IKI+, spores bisériées.
Paraphyses dépassant les asques 20 um au maximum, sans guttules réfringentes, septées, hyaline à sommet pointu.
Poils de la marge à bout arrondi, non tronqué, paroi non épaisse, septés, couverts d'incrustations de longueur jusqu'à 150 um.

Voyez-vous une autre possibilité que Lachnum virgineum ?

Yannick

  • message #7777
Yannick Mourgues, 18-05-2009 21:54
Yannick Mourgues
Re:autour de / around Lachnum
Good evening to all.

Here is another harvest of Lachnum which may be L. virgineum, found on wood of well decomposed decayed Fagus, on the ground.

Spores 7,7-9,6X2,3-3,2 um, Q=2,8-3,6, hyalin, smooth, sometimes 1 partition, without guttules.
Asques croziers+, octosporiques, 65-75X5-6 um, IKI +, biseriate spores.
Paraphyses 20 um protruding, without any gutulles, septate, hyaline.
Hairs of the margin with round, not truncated end, length until 150 um.

Do you see another possibility than Lachnum virgineum ?

Yannick
Hans-Otto Baral, 18-05-2009 21:56
Hans-Otto Baral
Re:autour de / around Lachnum
Salut Yannick

hair length is a bit high, spore width also. Is Dasyscyphella montana excluded? Do you have a microphoto of the hairs?

Zotto
Yannick Mourgues, 18-05-2009 23:12
Yannick Mourgues
Re:autour de / around Lachnum
Hi Zotto.
Yes, I have pictures of hairs but wasn't be able to find my USB key.
Of course it's Dasyscyphella genus ! Hairs ' last cells is without incrustations.
Hairs tips are slightly tapering.
As D. montana spores wide <2,5 um, coult it be Dasyscyphella angustipila ?
Yannick Mourgues, 18-05-2009 23:15
Yannick Mourgues
Re:autour de / around Lachnum
For hairs, the last two cells are smooth.
Yannick
Yannick Mourgues, 18-05-2009 23:20
Yannick Mourgues
Re:autour de / around Lachnum
But Dasyscyphella angustipila has aseptate paraphyses. Mine are 3-septate.

Have you got more informations about this specie, Zotto ?

Yannick
Michel Hairaud, 18-05-2009 23:22
Michel Hairaud
Re:autour de / around Lachnum
Bonsoir Yannick, Zotto et tous.
De mémoire, il me semble avoir mis une fiche de Dasyscyphella montana sur le site Ascofrance. Voici une photo des poils.
Amitiés

Michel
  • message #7784
Hans-Otto Baral, 18-05-2009 23:23
Hans-Otto Baral
Re:autour de / around Lachnum
D. angustipila and montana are now synonymized. I think the original difference was with the first or also second hair cell smooth, but that is variable and gradual. Spore width is 2.2-2.6, rarely 2.8, very rarely 3.2 (in HB 6874, see DVD).

In another find it was as follows:

Chemnitz, Einsiedel, Fraxinus trunk, soc. Lachnum brevipilosum. Asci *53-65 x 5.8-6.5 µm, with croziers. Sp. *6-9.5 x 2.2-2.7 µm, egutt. Paraph. narrowly cylindrical to sublanceolate, not protruding. Hairs 70-90 µm long, smooth, not tapering above, no crystals.

This seems actually a bit different from the above.

and a further one:

Ap. 1-2.5 mm diam, with cylindr. medium long stipe. Asci *63 x 5.5-6 µm, with croziers. Sp. *5.5-8.5 x 2-2.3 µm, egutt. Paraph. 1-2lanceolate, */2-3.5 µm. Hairs 100-120 µm, apex */2.5-3(-3.5) µm, cyl. to somet. spathulate, no crystals.

Well, I think its all the same.

Zotto
Yannick Mourgues, 18-05-2009 23:27
Yannick Mourgues
Re:autour de / around Lachnum
Ok for D. montana.
Merci à tous les deux !
Yannick
Hans-Otto Baral, 18-05-2009 23:28
Hans-Otto Baral
Re:autour de / around Lachnum
Paraphyses are always septate, without any exception in the ascomycetes (if anybody observed the contrary, please you are invited to teach me).

You say your para protrude 20 µm. In the living state I measured up to 10 µm, likewise in the dead state.

Here the hairs of my Chemnitz find
  • message #7787
Yannick Mourgues, 18-05-2009 23:32
Yannick Mourgues
Re:autour de / around Lachnum
Sorry. I found in Ain Raitviir key that paraphyses of D. angustipila are aseptate.
It's a mistake so.