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17-04-2026 19:16

Enrique Rubio Enrique Rubio

Hi to everybodyI would appreciate any assistance r

14-04-2026 05:32

Ethan Crenson

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

17-04-2026 15:14

Bruno Coué Bruno Coué

Bonjour.Récoltes du 16/04/2026, sur feuilles mort

12-04-2026 15:52

Gernot Friebes

Hi,I'm looking for help with this anamorph collect

14-04-2026 21:52

Gernot Friebes

Hi,found on dead leaves of Carex elata. Conidia: 4

16-04-2026 22:09

Buckwheat Pete

Hello, I'd like to ask about this older specimen:

15-04-2026 19:33

Fátima Durán Manzaneque

Hi!! I need help, I found this Ascomycete but I d

14-04-2026 20:31

Gernot Friebes

Hi,can this be Psilachnum lateritioalbum on Phragm

12-04-2026 17:56

Hardware Tony Hardware Tony

Found on dead stems in February earlier this year

12-04-2026 12:22

William Slosse William Slosse

In a dune grassland in Oostduinkerke (Belgium), on

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Sur feuille de Populus tremula
Louis DENY, 26-10-2021 18:26
Bonsoir forum


Sur feuille d'arbre (sans doute populus tremula) ce petit (diamètre 1 mm) disque blanc à poils courts
Poils lisses, séptés, extrémités arrondies, moins de 50µ
Asques à crochet (?), spores bisériées. Pas de réaction notable au Lugol, 50µ
Spores sans guttules, 7-10 X 3µ
Texture prismatique

Merci de votre aide
  • message #70455
  • message #70455
  • message #70455
  • message #70455
Hans-Otto Baral, 26-10-2021 20:53
Hans-Otto Baral
Re : Sur feuille de Populus tremula
Cher Luis

hmm, I am not prepared to say what this could be. I assume the apos look fringed with hairs and are sessile. Or is there a stalk?

The living paraphyses would be helpful, although I assume they contain cylindrical VBs as I can discern in the hairs.

Psilocistella could be a wastebasket genus, but I don't remember a species.

Zotto
Louis DENY, 27-10-2021 11:20
Re : Sur feuille de Populus tremula
Zotto,
thanks for the hint. 
Appos are stalked (i mesured around 0.2mm)
Paraphyses are very rare. I Attached is a photo.Hope it can help

Louis
  • message #70464
  • message #70464
Hans-Otto Baral, 27-10-2021 11:51
Hans-Otto Baral
Re : Sur feuille de Populus tremula
This is good! Now I have an idea: Calycina subcitrina, to be found in "Calycina white, sp. aseptate".
Louis DENY, 27-10-2021 12:03
Re : Sur feuille de Populus tremula
Thanks à lot!