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17-09-2025 19:43

Lachnellula suecica ?
Philippe PELLICIER

Sur branche morte de Mélèze. Les ascospores sphÃ

18-09-2025 08:35

Chaetomium
Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

18-09-2025 19:40

Pulvinula sp
Sylvie Le Goff

BonjourPensez vous que le genre Pulvinula puisse c

18-09-2025 16:14

Literature request
Bernard Declercq Bernard Declercq

Hello,I am looking for a copy of following paper:H

17-09-2025 16:14

Sepultaria ?
Philippe PELLICIER

Apothécies enterrées, fermées au début puis s'

17-09-2025 10:50

Ascomycete on Polystichum proliferum
Heather Merrylees

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

11-09-2025 16:57

Marthamycetales revision published
Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

16-09-2025 12:53

Encoeliopsis rhododendri
Philippe PELLICIER

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

03-09-2025 12:44

Ascolichen on Blechnum?
Enrique Rubio Enrique Rubio

Hi to somebody.I would like to know your opinion o

15-09-2025 14:40

Engler & Prantl, Nat. Pflanzenfam. (Ed. 2) 1938
Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for a digital copy of the seco

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Large Hymenoscyphus on herb stem
Edvin Johannesen, 28-09-2021 19:01
Edvin Johannesen
These long-stalked, 3-6 mm broad, rather bright orange-yellow apothecia (paler on the outside) were growing on a herb stem in a tall-herb spruce forest in Northern Norway. Not sure what herb, but the herb stem is marrow-filled.

Asci are IKI-. Paraphyses are very numerous and very distinctly multiguttulate. Spores measure typically 17-20 x 4-5 micr., with two tiny oil bodies near each end, becoming 1-septate. Some are germinating. Excipulum two-layered; a thick layer consisting of up to 25 micr. spherical or broadly oblong cells, and a thin layer of parallel rather thin hyphae.

I assume Hymenoscyphus s.l., a genus I am struggling with. But the asci are inamyloid, as far as I can see.

Opinions appreciated.

Thanks.
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Hans-Otto Baral, 28-09-2021 20:33
Hans-Otto Baral
Re : Large Hymenoscyphus on herb stem
H. repandus has such spores but miuch larger. Inamyloidity sometimes occurs in amyloi taxa. Globose cells I wonder because stipitate taxa of Hymenoscyphus do not have that. But Hymenoscyphus is clear based on the paraphyses.
Edvin Johannesen, 28-09-2021 20:44
Edvin Johannesen
Re : Large Hymenoscyphus on herb stem
OK, thanks. I guess we cannot conclude, then?
Hans-Otto Baral, 28-09-2021 21:04
Hans-Otto Baral
Re : Large Hymenoscyphus on herb stem
I am sorry but I would need a better docu.
Hans-Otto Baral, 29-09-2021 15:24
Hans-Otto Baral
Re : Large Hymenoscyphus on herb stem
I now agreed with Edvin that this should be Phaeohelotium epiphyllum, despite the long stipe.