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09-11-2025 13:20

Josep Torres Josep Torres

Hello.A tiny ascomycete, appearing as erupting gra

08-11-2025 12:10

Elisabeth Stöckli

Bonjour, Trouvé sur tiges mortes de Rubus (ronce

08-11-2025 00:29

Francois Guay Francois Guay

I found this species in Quebec, Canada, on herbace

04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

08-11-2025 09:15

Michel Hairaud Michel Hairaud

Bonjour, Pouvez vous m'aider à identifier ce Mol

06-11-2025 16:50

Rot Bojan

Hello! Yesterday I found a fungus on or near a nee

05-11-2025 11:33

Pierre Repellin

Bonjpur,J'ai trouvé, sur une hampe florale d'Alli

04-11-2025 09:07

Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 12:43

Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

03-11-2025 21:34

Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

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Cistella yellowish
Viktorie Halasu, 11-03-2021 23:21
Viktorie HalasuHello,

another corpse on bark of laying Ulmus branch, soc. Orbilia aurantiorubra (what else..).
Most spores dead, many germinating and sometimes 1-septate. 
Hairs (17)19-30 × (2.6)2.9-3.5(3.8) ?, some smooth, some with short pegs or blunt spines, not dissolving in heated MLZ. 

Because of the inamyloid asci, I'm thinking on C. chlorosticta but the spores probably don't fit it. 

Viktorie
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Hans-Otto Baral, 12-03-2021 10:03
Hans-Otto Baral
Re : Cistella yellowish
Hi Viktorie

I remember C. chlorosticta with a rather variable spore size. And I see, in my old sample 3141a it is just as in yours: 5.5-7.5 x 2(-2.5).

I am not sure if there is a difference in the ascus apex being either a bit truncate and thin-walled when dead, or more rounded and thick-walled 8with dome).#

Zotto
Viktorie Halasu, 12-03-2021 10:26
Viktorie Halasu
Re : Cistella yellowish
Dear Zotto, thank you for confirmation. 

I admit I havent paid much attention to the ascus apex shape. Here are all the asci I have on photo, all from the apo. on macrophoto. The rest of apoth. were very senescent, no asci, most spores germinating etc. Difference from what - "typical" C. chlorosticta, C. mali, other Cistellas, or some other genera?

Viktorie
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Hans-Otto Baral, 12-03-2021 10:43
Hans-Otto Baral
Re : Cistella yellowish
This is exactly what I meant, truncate and thin-walled. maybe there are two species, onw tih and one without dome.

C. mali I considered synonym with chlorosticta.