24-04-2024 21:54
éric ROMEROBonjour, J'ai trouvé ce Lasiobolus sur laissées
23-04-2024 15:18
Lothar Krieglsteiner... but likely a basidiomycete. I hope it is o.k.
23-04-2024 13:17
Edouard EvangelistiBonjour à tous, Je viens de récolter ce que je
23-04-2024 21:49
Ethan CrensonHello all, A friend recently found this orange as
22-04-2024 11:52
Zuzana Sochorová (Egertová)Hello,I made a loan of a collection of Microstoma
11-01-2022 16:36
Jason KarakehianHi does anyone have a digital copy of Raitviir A (
22-04-2024 20:38
Miguel Ángel RibesGood afternoon.Does anyone know this anamorph?It g
19-04-2024 14:28
B ShelbourneCudoniella tenuispora: Distinctive macro and habit
A few days ago I found on the branch Quercus, Tremella moriformis. Basically fruiting bodies immature and I could not find spores but other characteristics show that this is the species.
As you know, Tremella are parasitic species. And that's what I have a problem with. I would like to determine on which mushroom it parasites, but my knowledge about them is in this case insufficient :(
I was looking among Diatrype. However, the spores do not match any of the species. In fact, 99% of spores have a length slightly below 5µm and their width does not exceed 1µm.
In the picture only a few examples of measurements but in fact I measured a much larger number of spores.
Is it possible that I measure immature spores. I took a sample from the sporocarps or maybe you need to print spores ???
I was not able to observe the reaction to iodine. I tried directly in Lugol and after previous treatment with a KOH sample. In both cases negative.
Thank you in advance for any hints
Mirek
Hi Mirek,
Asci seem multispored. Please see within Diatrypella genus, especially compare to D. quercina.
Alain
Oh yes, asci are multispored :)
Still wondering about the small size of the spores?
Thank you and best regards
Mirek
Eduard
Yes, Eduard, you're right. I haven't precisely searched.
Alain
However, with my little knowledge about these mushrooms species I can not determine. None of the species described match my.
Diatrypella intermedia should have short asci. In my asci they are long so it's probably also not this species?
I am also posting a photo with the samples of dimensions.
Judge for yourself.
I will try to get other samples from Quercus. After the storm in 2016, a lot of substrate remained in the forest. Until now, old Quercus have remained broken in the forest.
Regards
Mirek
Microscopic features identical to those in the collection presented above. Therefore, I ask myself if I did everything right. All features match except ascus length. Or maybe I'm measuring wrong? Do we measure the total length of ascus at Diatrypella? I met in some descriptions where the length of the base is given separately. Are we therefore only measuring the part containing the spores?
If so, these collections would match D. intermedia!
Mirek
The length of asci with long stipes are often given “p. sp.” which means that the length refers to the (wide) part with the spores. That makes sense because such long stipes are often broken and seldom complete.
Eduard
Oh yes you are right!
My knowledge of foreign languages is poor and that is why I sometimes ask silly questions.
I reviewed the materials on D. intermedia again and it turns out that Von Larissa N. Vasilyeva gives the length of ascus without stem for this species: "
pars sporifera des Ascus nur 35-40 um lang; ".
So mine fit into this genre.
Thank you very much
Mirek