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21-07-2025 19:22

Ethan Crenson

Hello all,  Here is an Orbilia found by a friend

13-06-2025 09:41

Josep Torres Josep Torres

Hello.A cerebriform ascomycete sprouting scattered

14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

18-07-2025 23:03

Josep Torres Josep Torres

Hello.Fruitings between 51 and 130 microns in tota

17-07-2025 11:55

Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y abetos, en tieraEjemp

16-07-2025 17:34

Bernard Declercq Bernard Declercq

Hello,I have trouble distinguishing above mention

15-07-2025 13:27

Angel Pintos Angel Pintos

Hello, does anyone have access to the following ar

16-01-2023 21:31

Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

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Hymenoscyphus on Populus leaves
Juuso Äikäs, 15-10-2020 13:31
These were growing on fallen leaves of Populus tremula. 

Many spores had one to three tiny setulae.

Spore measurements:
(17.2) 17.22 - 18.7 (19.5) × (4.5) 4.53 - 4.9 (5.1) µm
Q = (3.4) 3.5 - 4.1 (4.3) ; N = 10
Me = 17.8 × 4.8 µm ; Qe = 3.7

This is clearly a Hymenoscyphus or something like that, but further I can't tell.
  • message #65398
  • message #65398
Lothar Krieglsteiner, 15-10-2020 15:49
Lothar Krieglsteiner
Re : Hymenoscyphus on Populus leaves
for me this looks like H. caudatus.
Best regards, Lothar
Juuso Äikäs, 15-10-2020 17:42
Re : Hymenoscyphus on Populus leaves
I searched some info and yes, that species (complex?) seems to fit! Thanks!
Hans-Otto Baral, 15-10-2020 17:48
Hans-Otto Baral
Re : Hymenoscyphus on Populus leaves
Not exactly, because of the croziers. The common H. caudatus is without, but this one is my folder "caudatus H+ central Europe Querc Popul leaves" and the nice name "Sophienpflege" is attached to most filenames. There is also the name albopunctus, but that species has smaller spores and lacks croziers.

Would be great to add a note on the collection site to your pics, including date.

Zotto
Juuso Äikäs, 15-10-2020 18:31
Re : Hymenoscyphus on Populus leaves
I was actually earlier looking at that folder. I replaced the pics with ones that have the location and date added to them.
Hans-Otto Baral, 15-10-2020 20:22
Hans-Otto Baral
Re : Hymenoscyphus on Populus leaves
Thanks!