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17-09-2025 19:43

Philippe PELLICIER

Sur branche morte de Mélèze. Les ascospores sphÃ

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Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

17-09-2025 16:14

Philippe PELLICIER

Apothécies enterrées, fermées au début puis s'

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Hi there!I am hoping for any advice on the identif

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

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Philippe PELLICIER

Pézizes de 1-4 mm, brun grisâtres, sur les capsu

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Enrique Rubio Enrique Rubio

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Nicolas VAN VOOREN Nicolas VAN VOOREN

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14-09-2025 22:16

Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

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Phaeohelotium on Fagus grandifolia leaves
Khomenko Igor, 02-02-2021 19:35
Khomenko IgorHi,

I was unable to identify this ?Phaeohelotium sp. on Fagus grandifolia dead leaves on the ground that I found in late fall near Ottawa, ON, Canada. Apothecia are 1-2mm.
Ascospores
(10.7) 12.2 - 14.8 (15.1) × (3.6) 3.8 - 4.38 (4.4) µm
Q = (2.8) 3.1 - 3.6 (3.9) ; N = 31
Me = 13.6 × 4.1 µm ; Qe = 3.3
Overmatured spores with one septum.
8-spored asci, croziers(+), IKI+b, measure
(73.7) 76.9 - 84.9 (85.1) × (7.7) 8.3 - 9 (9.5) µm ; N = 6
Me = 79.5 × 8.7 µm ;


Pictures here: https://inaturalist.ca/observations/61807484



Thanks for your help,


Igor

  • message #67364
Hans-Otto Baral, 02-02-2021 22:43
Hans-Otto Baral
Re : Phaeohelotium on Fagus grandifolia leaves
Hi Igor

this reminds me a bit of your find on spruce needles, 1.X.2020, Greenbelt, but the excipulum is very different and the stalk longer there. (my "lutescens-like" folder in monticola group).

Maybe when sreening the drawings of White's good papers around 1944 one could find something.

Zotto
Khomenko Igor, 03-02-2021 04:42
Khomenko Igor
Re : Phaeohelotium on Fagus grandifolia leaves
Thank you Zotto.