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04-05-2026 16:39

Stephen Martin Mifsud Stephen Martin Mifsud

ID request: This specimen was collected in Malta o

04-05-2026 09:50

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia,(España) re

28-04-2026 20:07

Lothar Krieglsteiner Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

03-05-2026 11:38

Castillo Joseba Castillo Joseba

Me mandan el material seco, recolectado en dunasLo

02-05-2026 12:42

Alain BRISSARD

Bonjour à tousJeuidi 30 avril dernier on m'a remi

02-05-2026 13:06

Pauline. Penna

Bonjour  Please can someone help me with this id

01-05-2026 22:45

Thierry Blondelle Thierry Blondelle

Bonjour à tous, Une récolte sur bouse séchée d

14-04-2026 05:32

Ethan Crenson

Hi all, A few weeks back a friend pointed out som

28-04-2026 20:33

Vitus Schäfftlein

Hello, I found Trochila ilicina on Ilex aquifoliu

30-04-2026 10:43

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia, España, 

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White hairy on Populus tremula leaf
Marja Pennanen, 29-09-2014 19:38
Hello forum,

size of these is up to 1 mm.
The spores are about 10-15x2-3.
Asci are about 46-60x6-7 and faintly IKI blue.
The paraphyses are up to 5 mm wide, lanceolate and septate and exceed asci a bit or not at all.
The hairs are septate, up to 5 mm at the base, up to 100 long and carry some matter.
I did not check KOH reaction, because I have not met such a stipate species, where it would have been necessary.

Once again I miss the genus to look for species: Marja
  • message #31492
  • message #31492
Hans-Otto Baral, 29-09-2014 19:55
Hans-Otto Baral
Re : White hairy on Populus tremula leaf
Hi Marja

did you consider Lachnum virgineum? There was a species erected fr leaves but I never believed that it is separate (L. charretii).
No, spores are too large. Perhaps DASYSYPHELLA CLAVICULATA.

Zotto
Marja Pennanen, 29-09-2014 20:16
Re : White hairy on Populus tremula leaf
Dear Zotto,

thank you!

I was lucky to find revision of the genus Dasyscyphella by Raitviir.
I know he studied dried specimen, so the bigger size of spores and asci of my finding can be accepted.
Dasyscyphella claviculata is a good option for determination.

Marja
Hans-Otto Baral, 29-09-2014 22:42
Hans-Otto Baral
Re : White hairy on Populus tremula leaf
If you find hexagonal crystals among the hairs then it wouldbe for sure.