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18-12-2025 21:17

Pol Debaenst

The identification took me to Byssonectria deformi

15-12-2025 07:09

Danny Newman Danny Newman

indet. Rutstroemiaceae sp. on unk. fallen leavesMc

19-12-2025 10:10

Patrice TANCHAUD

Bonjour, récolte réalisée en milieu dunaire, a

18-12-2025 17:23

Bruno Coué Bruno Coué

Bonjour,je serais heureux d'avoir votre avis sur c

18-12-2025 18:07

Margot en Geert Vullings

These plumes were found on rotten wood.They strong

17-12-2025 18:35

Michel Hairaud Michel Hairaud

Bonjour à tous/Hi to everyone I am passing along

21-11-2025 10:47

François Freléchoux François Freléchoux

Bonjour,Peut-être Mollisia palustris ?Trouvée su

15-12-2025 15:48

Danny Newman Danny Newman

Melanospora cf. lagenaria on old, rotting, fallen

15-12-2025 15:54

Johan Boonefaes Johan Boonefaes

Unknown anamorph found on the ground in coastal sa

15-12-2025 21:11

Hardware Tony Hardware Tony

Small clavate hairs, negative croziers and IKI bb

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Parorbiliopsis spec.?
Andreas Gminder, 16-01-2020 23:29
Andreas GminderHello,

yesterday we found a small salmon coloured tiny ascomycete on an attached branch of Salix. I was certain to have found an Orbilia, but to my surprise the microscopy revealed something totally different.
I at first even wondered if this could be an operculate ascomycete, but am quite convinced that it is inoperculate.

Asci appr. 100 x 14,5 µm, with croziers (or being pleurorhynch), IKI negative
Spores appr. 15,5 x 7,5 µm, with many medium sized and small oil drops, in IKI with two big glycogen deposites, becoming one-septate when germinating
Paraphyses filiform, septate, once or twice branched and often somewhat curved, some with an amorphes mass at the tip
Excipulum of a kind of textura angularis with quite massive cell walls, giving it an appearance of a gelatinous texture.

Growing on attached branch of Salix caprea, together with Hyalorbilia juliae and Lecanidion atratum, Goslar, Göttingerode, östl. Langenberg, 15.01.2020

Any suggestions very welcome :-)

all the best, Andreas and Sylvie
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Hans-Otto Baral, 17-01-2020 07:52
Hans-Otto Baral
Re : Parorbiliopsis spec.?
Hi Andreas & Sylvie

I conclude you mean ca. 0.5 mm diam. (some people say small for 5 mm).

This is clearly Helotium uvidulum, a species that I have placed in my Laetinaevia folder although the sequence we have does not cluster with L. carneoflavida. Whether it would cluster with L. lapponica, the type species of Laetinaevia, is unclear because of lack of a sequence.

This species is quite frequent and may occur together with Orbiliaceae. Its name uvidulum (= hydrophilous) is strange but I studied the type.

Zotto
Andreas Gminder, 17-01-2020 07:58
Andreas Gminder
Re : Parorbiliopsis spec.?
Dear Zotto

thanks a lot! I have not heared from this species before and wouldn't have searched in Letinaevia.

And yes, small in this case meant 0,3 mm :-)

all the best,
Andreas