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20-02-2026 18:47

Nectriopsis oropensoides on Fagus?
Marc Detollenaere Marc Detollenaere

Hello Forum,On rotten wood of Fagus, I found some

07-02-2023 22:28

Fracchiaea callista? on Carpinus
Ethan Crenson

Hello friends, On Sunday, in the southern part of

19-02-2026 17:49

Ayuda con Tarzetta sp
Salvador Emilio Jose

Hola buenas tardes!! Necesito ayuda para la ident

09-02-2026 22:01

Sp
ruiz Jose

Hola, me paso esta colección en madera de pino, t

19-02-2026 13:50

Hairy disc-"Patinella sanguineoatra" like
Margot en Geert Vullings

We found this collection on deciduous wood on 7-2-

19-02-2026 12:01

Ayuda con esta
Castillo Joseba Castillo Joseba

Me mandan el material de Galicia (España), recole

17-02-2026 09:41

Diaporthe spiculosa?
Maren Kamke Maren Kamke

Good morning, I found a Diaporthe species on Samb

16-02-2026 21:25

Pyreno in the bark of Lonicera xylosteum
Andreas Millinger Andreas Millinger

Good evening,failed to find an idea for this fungu

08-12-2025 17:37

Cucurbidothis parmeliarum (pithyophila var. cembrae) - on Abies
Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

17-02-2026 17:26

Recherche biblio Lambertella WHETZEL 1943
Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous, Je recherche cette publication :

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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
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  • message #70455
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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
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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!