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02-12-2024 16:13

Paul Diederich Paul Diederich

Flora of Lichenicolous FungiVolume 2 · Hyphomycet

25-12-2024 19:07

Dirk Baert

Hello,I found this fungi on a slime mould.I think

23-12-2024 14:37

Josep Torres Josep Torres

Hello.Some tiny globose black ascomata found on De

23-12-2024 18:18

Rot Bojan

Hello!I've been working with this small fungus for

23-12-2024 22:59

Lucian Clanet Lucian Clanet

Hello,I'm trying to find information about the Hyp

21-12-2024 12:45

Marc Detollenaere Marc Detollenaere

Dear Forum,On naked wood of Fagus, I found some ha

24-12-2024 09:02

Charles Aron Charles Aron

Hi All, Recently I found this orange Disco growin

23-12-2024 12:10

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

22-12-2024 21:42

Bometon Javier Bometon Javier

Habitat en el suelo, con presencia de Calluna mult

17-12-2024 12:33

Lothar Krieglsteiner Lothar Krieglsteiner

this fluffy anamorph was repeatedly found on decid

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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