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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 21:17

Pol Debaenst

The identification took me to Byssonectria deformi

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

15-12-2025 07:09

Danny Newman Danny Newman

indet. Rutstroemiaceae sp. on unk. fallen leavesMc

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unknown Helotiales?
Björn Wergen, 13-10-2011 09:44
Björn WergenHello again,

this finding seems to be an inoperculate contrary to my mysterious Pezizales, which is perhaps somewhere between Boubovia and Sphaerosporella. It grows on wood of hardwood (Quercus?) and forms brownish-ochraceous fruitbodies which are 2-5 mm broad. There is no stem.
The microscopic features are:
Spores fusiform, very variable in size and form, with a thin gelatinous sheath, hyaline, permanently with 2 bigger oil droplets, 14-20x4-7µm. Asci with 8 spores, short stalked, without croziers, 110-130x8-10µm. Paraphyses with strongly refractive guttules, especially in the apical part, septate and branched. No hairs. Ascus apex in Lugol blue. 

If more information is needed, tell me, I have the finding right here in a plastic box ;)

lg kazyua
  • message #16424
  • message #16424
  • message #16424
Hans-Otto Baral, 13-10-2011 12:12
Hans-Otto Baral
Re : unknown Helotiales?
Hi Kazyua :-)

very fine presentation! Clearly a Hymenoscyphus s.l. (Phaeohelotium). I assume you are sure there is not long stalk hidden in the substrate (that is sometimes overlooked).

The spores do not look very variable. Are you sure with the absent croziers? I would be surprised but this is very important. I thought it could be H. epiphyllus or H. monticola, but I am not very happy with my idea.

A section of the margin and flanks would perhaps also help

Zotto
Björn Wergen, 13-10-2011 15:12
Björn Wergen
Re : unknown Helotiales?
Hi Zotto,

I tried to find some croziers but I did not have success with it. I also thought about a Hymenoscyphus, the size and shape remembered me on H. epiphyllus, but I know this specimen more yellowish...

I will try to make some more photos if there will be the time for it.

regards
kazuya
Hans-Otto Baral, 18-10-2011 19:41
Hans-Otto Baral
Re : unknown Helotiales?
Hi Kazuya

when looking again at your fungus I am sure that it is Hymenoscyphus fulvidulus. This species is somewhat variable, from brownish to grey, but the features all fit including absence of croziers and strongly refractive VBs in the paraphyses.

Zotto
Björn Wergen, 18-10-2011 19:48
Björn Wergen
Re : unknown Helotiales?
Hi Zotto,

many thanks. I didn't check this species again, so I am sorry that I cannot give you some more details.

lg kazuya