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20-03-2026 12:53

Stefan Blaser

Hello everybody, In the field, from distance, my

20-10-2017 09:23

Garcia Susana

Este otro crecía en el mismo trocito de madera qu

20-03-2026 16:16

Edvin Johannesen Edvin Johannesen

These 0.5 mm diam. acervuli were breaking through

19-03-2026 19:34

Filip Fuljer Filip Fuljer

Hello everyone,a few days ago I collected this str

19-03-2026 18:25

William Slosse William Slosse

Good evening everyone, On 18/03/26 I found a few

17-03-2026 10:09

François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

19-03-2026 15:58

Stefan Blaser

Hello everybody, I hope for some hints... Macro:

19-03-2026 17:50

Enrique Rubio Enrique Rubio

Hi to everybodyThese thiny, blackish pseudothecia

18-03-2026 13:09

Khomenko Igor Khomenko Igor

I recently examined Celtis occidentalis branches

17-03-2026 19:41

Bernard CLESSE Bernard CLESSE

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

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Lopadostoma? Valsaria? Amphisphaeria….?
Ismael Wind, 24-04-2023 23:39
This species was growing on oenothera. Spores are brown and about 17,5-20 x 7,5. Is it an valsaria or amphisphaeria or Lopadostoma?
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Alain GARDIENNET, 26-04-2023 21:55
Alain GARDIENNET
Re : Lopadostoma? Valsaria? Amphisphaeria….?
I am answering you in a friendly way to help you get an answer: you have to give much more than photos and size of spores.
First of all, you have to describe the ascoma well. A vertical section is often important (look at attached example). It gives information on the ascoma, but also on details of its environment (stroma, involucrellum, ...).
The same applies to microscopy. With the spores alone, you can't say much. A tip for this one, try iodine for a possible reaction of the apical apparatus of the asci, as you must have noticed that this one is unitunicate.
Look at some of the posts for models, such as Enrique's recent one about a Helminthosphaeria on Ficus carica. Even if you don't have all of Enrique's experience, you should be able to tell more.
Alain

 

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Ismael Wind, 26-04-2023 23:28
Re : Lopadostoma? Valsaria? Amphisphaeria….?
Hi Alain you are ofcourse very correct. I want it too fast its my pitfall. I will think of that in future! This one Will remain uncertain, although i do believe it is Anthostomella tomicoides