Yellowish Hymenoscyphus (?). - Forum ASCOFrance

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Yellowish Hymenoscyphus (?).

Mirek Gryc, 03-11-2021 10:33

Dear friends.
I found him a few days ago in a pile of brush, covered with dropped leaves. I suspect that he grew on the dead shoots of Parthenocissus. Ascomata up to 3 mm in diameter.

Mature spores with one septum with dimensions:

(9.3) 9.5 - 11.6 (11.9) × (3.4) 3.43 - 4 µm
Q = (2.4) 2.6 - 3.2 (3.4) ; N = 11
Me = 10.7 × 3.7 µm ; Qe = 2.9

A bit similar to H. repandus/imberbis but not all qualities are compatible.

I have no idea.

Mirek

Hans-Otto Baral, 03-11-2021 10:40

Re : Yellowish Hymenoscyphus (?).

Compare Phaeohelotium pani, an infrequently recorded species.

Mirek Gryc, 03-11-2021 12:07

Re : Yellowish Hymenoscyphus (?).

Hello and thank Zotto.
Now I am at work and I do not have access to some of my data. I have reviewed Velenowski monograph 1934 but the description is very general. Is there any more contemporary and detailed description of this species?
Do you have it on your disk? I can not check, I do not have a password for Google at work.

I suspected Parthenocissus but this also could be a thin twig Fraxinus. Brushwood was under Fraxinus who was overgrown by parthenocissus.
regards
Mirek

Hans-Otto Baral, 03-11-2021 12:24

Re : Yellowish Hymenoscyphus (?).

Nothing published. I failed to indicate the folder: although unsequenced I have it in the menthae group.

You need to look in Svrcek 's(1985: 167) revision.

In Baral & Krieglsteiner 1985 it is nentioned on p. 133 on Prunus and ?Malus.

Mirek Gryc, 03-11-2021 13:03

Re : Yellowish Hymenoscyphus (?).

Oh yes, here the description of this species is more detailed and reminiscent of my find.
I still have live Ascomata, I will try to explore more specifically. Interesting and actually a rare species.
I greet and thank you again.
Mirek

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