Accès membres

Mot de passe perdu? S'inscrire

16-01-2025 22:50

Bisporella
Yanick BOULANGER

BonsoirJ'ai récupéré cet échantillon comme ét

16-01-2025 21:26

Hyphomycete sp
William Slosse William Slosse

Good evening all,I have little to no experience wi

14-01-2025 10:11

disc on Cryptomeria needles
Margot en Geert Vullings

On a dead branch of Cryptomeria that has been lyin

16-01-2025 12:06

Literatur request
Thomas Flammer

Looking for a PDF of THE BRITISH SPECIES OF THE G

02-07-2016 17:19

lophiostoma
Angel Pintos Angel Pintos

hello, anybody have a identification key for lophi

15-01-2025 23:20

Coniochaeta taeniospora ?
Andgelo Mombert Andgelo Mombert

Bonsoir,Sur branche morte d'Acer (A. campestre ou

15-01-2025 18:36

Search for documentation
François Valade François Valade

hello forthe french fungi types project, I am loo

14-01-2025 18:17

Ascomycète 1ère fois. Hymenoscyphus sp.
Martine Vandeplanque Martine Vandeplanque

Bonsoir à tous. Grande première rencontre avec

13-01-2025 20:17

Pezizal blanc poilu tétrasporique
Jorge Hernanz

Buenas tardes, adjunto datos de éste pequeño pez

10-01-2025 11:24

Didymella applanata? Small black spots on perennial stem of blackberry
Wim de Groot

We found this small black spots on perennial stem

« < 1 2 3 4 5 > »
Is this a Phaeohelotium on a female catkin of Alnus?
François Bartholomeeusen, 19-06-2024 18:32
On female Alnus catkins I found very small fruit bodies (height < 3 mm; disk < 2mm). The disc had a pink / viollet shade.
Asci: 73x7.5 µm; croziers +; LUG +;
Paraphysis: With refractive guttules,
Spore: (15.6) 16.2 - 18.2 (18.4) × (3.7) 3.9 - 4.67 (4.7) µm; Me = 17.4 × 4.3 µm; Qe = 4.1
Could this be Phaeohelotium epiphyllum?

Thanks in advance,


François

  • message #79542
  • message #79542
  • message #79542
  • message #79542
  • message #79542
  • message #79542
  • message #79542
  • message #79542
  • message #79542
Hans-Otto Baral, 19-06-2024 20:32
Hans-Otto Baral
Re : Is this a Phaeohelotium on a female catkin of Alnus?
You should try to find living mature asci, also unemptied dead immature asci in IKI for the apical ring shape.

I think the long stipe excludes P. epiphyllum. Is the medulla non-gelatinous and withut crystals?

Living paraphyses with their contents are required.
François Bartholomeeusen, 20-06-2024 08:54
Re : Is this a Phaeohelotium on a female catkin of Alnus?
Dear Zotto,

The medulla is non-gelatinous and without crystals. Right now the FRBs are immature and I cannot determine the apical ring in IKI.

Thank you very much for your quick response!

François


François Bartholomeeusen, 20-06-2024 11:31
Re : Is this a Phaeohelotium on a female catkin of Alnus?
I'm sorry, but I want to show you more pictures. Maybe there are crystals after all? I thought it was a contamination with conidia. I also found a reference to Ombrophila rivulorum which shows a great similarity in appearance.
Maybe an Ombrophila after all?

François

  • message #79552
  • message #79552
  • message #79552
  • message #79552
  • message #79552
Hans-Otto Baral, 20-06-2024 12:03
Hans-Otto Baral
Re : Is this a Phaeohelotium on a female catkin of Alnus?
II think you are now on the right track. Though very small these are crystals in the hymenium.

The living paraphysis cels are here empty. In the last pic it looks a bit like VBs but elongated as typical of Ombrophila.

The genus is very difficult.