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11-01-2026 20:35

Pyrenomycete on Conifer Wood
Josep Torres Josep Torres

Hello.A very tiny pyrenomycete sprouting sparsely

09-01-2026 17:41

Bryonectria callicarpa Döbbeler; ein Bryoparasit auf Frullania dilatata
Arnold Büschlen

Hallo, F. dilatata wird von vielen Bryoparasiten

10-01-2026 20:00

Lichenicolous fungus on Protoparmeliopsis muralis
Tom Schrier

Hi all,We found picnidia on Protoparmeliopsis mur

07-01-2026 22:22

Tatraea sp. on indet. hardwood - 303452087
Danny Newman Danny Newman

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

10-01-2026 01:18

cf. Neovaginatispora fuckelii on indet. shrub - 305938906
Danny Newman Danny Newman

cf. Neovaginatispora fuckelii on indet. shrub Pre

07-01-2026 10:24

Pezicula sp. on indet. hardwood - 303870019
Danny Newman Danny Newman

Pezicula sp. on indet. hardwood Appalachian Highl

09-01-2026 10:08

Orbilia posible aurantiorubra
Blasco Rafael Blasco Rafael

Hola, en el mismo habitat que la anteriorRetamaDia

08-01-2026 21:22

Orbilia pilifera posible
Blasco Rafael Blasco Rafael

Hola, He recogido esta muestra de Orbilia sobre Re

07-01-2026 17:29

White tree-like anamorph on Populus
Marc Detollenaere Marc Detollenaere

Dear Forum,On a barkless Populus I found some smal

10-11-2021 17:33

anamorph Chlorociboria aeruginella
Riet van Oosten Riet van Oosten

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

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Gray, reddening Hymenoscyphus(?)
Juuso Äikäs, 30-06-2019 08:43
I found these yesterday in a wet, muddy depression, growing on pieces of moist wood. I didn't first think of Hymenoscyphus when I saw these but the microscopy is something like it, I think. The apos seem to redden with age and/or when damaged. Some of the asci colored orange in Melzer's and some of them had amyloid apical rings. The spore dimensions are 14.5-20 x 4-5 micrometres. Any thoughts?
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Hans-Otto Baral, 30-06-2019 10:30
Hans-Otto Baral
Re : Gray, reddening Hymenoscyphus(?)
Could you please clarify if coniferous or not? How large are the apos?
The iodine reaction is rather faint. Did you also check in Lugol?  This and the croziers excludes Phalohelotium fulvidulum, but it could be of this group of species.

My subfolder "griseobrunneum ~amyloid H+" might come closest though the excipulum tends to be brownish. You find it in the folder Phaeohelotium monticola group.
Zotto
Juuso Äikäs, 30-06-2019 17:40
Re : Gray, reddening Hymenoscyphus(?)
I got the impression that it's hardwood, but I'm not sure. The biggest apos were about 3mm in diameter. I don't unfortunately have any Lugol.
Hans-Otto Baral, 30-06-2019 17:53
Hans-Otto Baral
Re : Gray, reddening Hymenoscyphus(?)
Hardwood is easy to verify, you only need a cross section and view either under a handlens (20x) or larger.
Juuso Äikäs, 30-06-2019 19:10
Re : Gray, reddening Hymenoscyphus(?)
I don't have the sample anymore but I'll bring some more if I return to the place soon.