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05-05-2025 10:09

Nicolas Suberbielle Nicolas Suberbielle

Re-bonjour,Cet ascomycète trouvé et étudié par

10-05-2025 18:47

David Chapados David Chapados

Hi, Does anyone have an idea of what this could b

09-05-2025 16:01

Thomas Flammer

I found a black cushon which might eventually be 

09-05-2025 19:10

Enrique Rubio Enrique Rubio

Hi to everybody.This Orbilia (apos up to 0.5 mm),

02-05-2025 13:29

Isabelle Charissou

Bonjour, j'aimerais savoir s'il y a eu des public

06-05-2025 13:37

Thomas Flammer

Munk, Anders (1953). The System of the Pyrenomycet

08-05-2025 20:50

Andreas Jacob

Good evening, due to contstant drought I started

07-05-2025 18:29

Francois Guay Francois Guay

I found this small hyaline ascomycete on moist, de

08-05-2025 02:22

Francois Guay Francois Guay

I found this white, hairy ascomycete on the bark o

08-05-2025 18:32

Ethan Crenson

Hello all, I was looking at leaves of Yucca from

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bitunicate, staining substrate purple - Leptosphaeria purpurea?
Lothar Krieglsteiner, 23-11-2023 09:46
Lothar Krieglsteiner.. found 19.11.23 in the Schwäbische Alb, Germany, on old stems of Sambucus ebulus lying on the ground. 
The spores are about 24-30(34)/4-5,5(6,5) µm large, and (3)-5-septate, constricted at the septa, at first hyaline, but I found older spores stained dark (blackish).
As I know there are other ascomycetes staining the substrate, I would appreciate your opinion.
Yours, Lothar
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Lothar Krieglsteiner, 04-06-2024 20:34
Lothar Krieglsteiner
Re : bitunicate, staining substrate purple - Leptosphaeria purpurea?
As there was no reaction to this post, I would try again to get one.
Does somebody know if I am write or wrong?

Andgelo Mombert, 04-06-2024 21:33
Andgelo Mombert
Re : bitunicate, staining substrate purple - Leptosphaeria purpurea?
Hello,

Perhaps a Amniculicola (lignicola or parva) ?

Andgelo
Lothar Krieglsteiner, 05-06-2024 09:44
Lothar Krieglsteiner
Re : bitunicate, staining substrate purple - Leptosphaeria purpurea?
Hello Angelo,
thank you for your interesting suggestion that I will follow and later response.
I once before had a species of this genus:
http://www.ascofrance.fr/search_forum/64573
It was growing submersely on wood, so had a very different ecology. But ...
Tahnka again and best regards,
Lothar
Hardware Tony, 05-06-2024 18:24
Hardware Tony
Re : bitunicate, staining substrate purple - Leptosphaeria purpurea?
Hi Lothar,

I guess you know that this was on wood and not herbaceous, but you mentioned stems, so just checking with Lophiostoma origani var. rubidum, normally only on Epilobium and other plants but pink stains and appears immersed through the substarte, spores close etc., and has variable septa. Normally has colourless appendages. Also species from Herpotrichia get close, but again mostly herbaceous.  Not much help perhaps. Wood is wood!
Lothar Krieglsteiner, 05-06-2024 18:36
Lothar Krieglsteiner
Re : bitunicate, staining substrate purple - Leptosphaeria purpurea?
Hi Tony,
thank you very much for your proposals - I will look at them and maybe they will prove to be valuable. Anniculicula grows on wood, typically, and that was what made me hesitate at once. Sambucus ebulus is not woody (in opposite to other species of the genus) and so your proposal of Lophiostoma could be good. I will check and write again.
Yours, Lothar

Franz Berger, 05-06-2024 20:31
Franz Berger
Re : bitunicate, staining substrate purple - Leptosphaeria purpurea?
I am missing a cross section of the ascoma