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05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

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Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

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Castillo Joseba Castillo Joseba

me mandan el material de Galicia (España) recolec

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David Chapados David Chapados

Hi,Does anyone know what could this anamorph be?ht

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Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

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Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Castillo Joseba Castillo Joseba

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Hymenoscyphus caudatus?
Raúl Tena Lahoz, 30-09-2010 21:47
Raúl Tena LahozOn Populus nigra rotten leaves, on August 22, 2010. I took no macrophoto. Apos clearly stipitate, stipe with a width of 0,2 mm, cup 0,5 to 0,8 mm in diameter, whitish over all. First I thought it could be Hymenoscyphus caudatus but paraphyses have pigmented VBs and maybe spores are smaller, so I´m not sure. Asci: probably euamyloid (not sure… because I did not test IKI thinking it was caudatus), no croziers. KOH + IKI: blue. 80-100 x 9-10 µm. Spores: one celled, some two celled when hypermature, 14-18 x 4-5,5 µm, with spore sheath, no cilia seen. Paraphyses with yellow VBs in the upper segment, not fusing.
Pictures in the attached PDF.
This can be Hymenoscyphus caudatus?
Thanks in advance!
Raúl.
Hans-Otto Baral, 30-09-2010 22:00
Hans-Otto Baral
Re:Hymenoscyphus caudatus?
This is not easy to answer. In the current sense this is clearly H. caudatus. But when I scan through my photos, I see mostly smaller LBs in the spores. In a few finds I see such large LBs but the spores are here strongly scutuloid, i.e. basally acute, as in the one here:

My notes : Andechs, Goaslweide, 16.X.05, leaf of Quercus. Ap. whitish, stipe longer than disc diam. Asci without croziers, *110-122 x 11.7-12.5 µm. Sp. free *16-20 x (4.5-)5.4-5.7 µm, Ölm.5, large LBs 2-3 µm. Paraph. VBs 1(-2)refr.

You say the VBs were yellow. Did the disc also appear yelowish then?

Zotto
  • message #12976
Raúl Tena Lahoz, 30-09-2010 22:27
Raúl Tena Lahoz
Re:Hymenoscyphus caudatus?
Thanks Zotto
Yes oil content is other thing that does not fit...
VBs are light yellow, but in the field I remember pure white apos. Maybe when drying they got more yellowish, sorry but I don´t remember, neither annotated that.
Spore shape seems different but this vary so much within the same apo sometimes...
I send you by mail the link with all the original photos so you can get more info.
Raúl.