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30-06-2025 16:56

Septoria on Impatiens glandulifera
Lydia Koelmans

Please can anyone tell me the species name of the

01-07-2025 23:37

Help with a Pleosporal.
Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

30-06-2025 12:09

Black erumpent on Populus (Ascodichaenaceae?)
Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

30-06-2025 06:57

Pezizales --Pyronema?
Ethan Crenson

Hi all, Another find by a friend yesterday in Bro

30-06-2025 19:05

RECHERCHE ARTICLE
ALAIN BOUVIER

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

30-06-2025 14:45

is this a Hymenoscyphus on Nothofagus?
Götz Palfner Götz Palfner

This is a quite common species on Nothofagus wood

25-06-2025 16:56

Scutellinia cejpii ?
Philippe PELLICIER

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

29-06-2025 18:11

unknown discomycete from Brooklyn
Ethan Crenson

Hello all, A friend found this disco yesterday in

28-06-2025 17:10

Literature Request
Peter Welt Peter Welt

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

28-06-2025 16:00

Salvia leaf parasite
Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

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Orbilia tremulae?
Viktorie Halasu, 10-04-2020 20:15
Viktorie HalasuHello,
I've found this Orbilia on wet decorticated wood (probably Salix), on the ground. 
Only a little refractive exudate on paraphyses top + scattered on cells near margin. 
Uppermost spore mostly with SB up, but not always (3rd ascus from left is with SB down). 
I'm not sure if the anamorph belongs to it. 

Given the habitat and spore size, could it be Orbilia tremulae? Isn't it too much orange?
Thank you in advance.
Viktorie
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Hans-Otto Baral, 10-04-2020 21:55
Hans-Otto Baral
Re : Orbilia tremulae?
Hi Viktorie

Could be, but sure we cannot be.  These fusiform spores might be ascospores?

The Dicranidion conidia of O. tremulae would be characteristic.

O. tremulae is probably a common species, but I am often not sure, and our concept is only tentative. With DNA it would be easy - or with a culture or conidia from near apothecia.

Zotto
Lothar Krieglsteiner, 11-04-2020 09:54
Lothar Krieglsteiner
Re : Orbilia tremulae?
... das hätte ich (früher) als coccinella bestimmt. Aber vermutlich ist dies eine Sammelart geworden, wie so vieles.
LG von Lothar
Hans-Otto Baral, 11-04-2020 10:03
Hans-Otto Baral
Re : Orbilia tremulae?
Ja, das ist kompliziert geworden. O. coccinella ha hörnchenförmige Sporen in 16-sporigen Asci. O. tremulae hat eigentlich als NFF das japanische Dicranidion inaequale, aber das passt nur morphologisch. Neben der häufigen O. eucalypti gibt es noch ein paar weitere mit ellipsoiden bis subglobosen Sporen.