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14-01-2026 10:02

Hulda Caroline Holte

Hello, These ascomycetes were growing on standing

13-01-2026 10:13

Danny Newman Danny Newman

Cordieritidaceae sp. on indet. wood w/ Hypoxylon s

13-01-2026 07:57

Danny Newman Danny Newman

cf. Bombardia on indet. decorticate woodAppalachia

14-01-2026 07:28

Danny Newman Danny Newman

Nemania sp. on indet. decorticate woodAppalachian

12-01-2026 22:02

Ethan Crenson

Hello all, I am hoping someone will have some ins

11-01-2026 20:35

Josep Torres Josep Torres

Hello.A very tiny pyrenomycete sprouting sparsely

13-01-2026 18:55

Rees Cronce

Strossmayeria sp. on indet. decroticate hardwoodTh

13-01-2026 07:28

Danny Newman Danny Newman

Chlorociboria glauca on indet. decorticate logThe

13-01-2026 07:14

Danny Newman Danny Newman

Neodasyscypha cerina on indet decorticate logThe S

13-01-2026 09:10

Danny Newman Danny Newman

Dasyscyphella chrysotexta on indet. decorticate ha

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Hymenoscyphus calyculus?
Zuzana Sochorová (Egertová), 01-10-2025 20:16
Zuzana Sochorová (Egertová)Hello,
I would appreciate your opinion on this yellow Hymenoscyphus growing on a little twig, maybe of Rubus idaeus.

Asci 114-125 x 11-12 µm, H+, bb.

Ascospores (16.6) 17.7-19.2-20.8 (23.1) × (4.2) 4.3-4.7- 5 (5.9) µm, Q = (3.37) 3.70-4.07-4.54 (4.94), without cilita, not septate.

Paraphyses with strongly refractive guttules. 
Using Bernard´s key, I have arrived to H. calyculus, but OCl is lower than 5 (but many pictures at the internet also show spores with lower OCl).

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Zuzana Sochorová (Egertová), 01-10-2025 20:18
Zuzana Sochorová (Egertová)
Re : Hymenoscyphus calyculus?
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Hans-Otto Baral, 01-10-2025 20:58
Hans-Otto Baral
Re : Hymenoscyphus calyculus?
Hi Zuzana

it is curious that H. calyculus is so rarely recorded, when I began with Helotiales about 50 years ago I thought that it is a common species. 

No, the spores here are not really scutuloid. Some of them have a recognizably upper and lower end, but there is no clear asymmetry at the upper apex.

It must be H. epiphyllus.

The stalk here is never higher then wide, while in H. calyculus it can be >5x longer than wide.

Zotto
Zuzana Sochorová (Egertová), 01-10-2025 22:15
Zuzana Sochorová (Egertová)
Re : Hymenoscyphus calyculus?
Hi Zotto,
thank you very much.
I have ommited Phaeohelotium and went directly to Hymenoscyphus...
Z