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09-01-2026 17:41

Arnold Büschlen

Hallo, F. dilatata wird von vielen Bryoparasiten

10-01-2026 20:00

Tom Schrier

Hi all,We found picnidia on Protoparmeliopsis mur

07-01-2026 22:22

Danny Newman Danny Newman

Tatraea sp. on indet. hardwood The Swag, Great Sm

10-01-2026 01:18

Danny Newman Danny Newman

cf. Neovaginatispora fuckelii on indet. shrub Pre

07-01-2026 10:24

Danny Newman Danny Newman

Pezicula sp. on indet. hardwood Appalachian Highl

09-01-2026 10:08

Blasco Rafael Blasco Rafael

Hola, en el mismo habitat que la anteriorRetamaDia

08-01-2026 21:22

Blasco Rafael Blasco Rafael

Hola, He recogido esta muestra de Orbilia sobre Re

07-01-2026 17:29

Marc Detollenaere Marc Detollenaere

Dear Forum,On a barkless Populus I found some smal

10-11-2021 17:33

Riet van Oosten Riet van Oosten

Add-on topic http://www.ascofrance.com/forum/7059

07-01-2026 10:05

Danny Newman Danny Newman

cf. Chaetospermum on XylariaCosby Campground, Grea

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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!