21-03-2026 15:13
Lepista ZacariasHello everyone, Does any one know of any literatu
20-10-2017 09:23
Garcia SusanaEste otro crecía en el mismo trocito de madera qu
20-03-2026 16:16
Edvin Johannesen
These 0.5 mm diam. acervuli were breaking through
19-03-2026 19:34
Filip Fuljer
Hello everyone,a few days ago I collected this str
19-03-2026 18:25
William Slosse
Good evening everyone, On 18/03/26 I found a few
17-03-2026 10:09
François Freléchoux
Bonjour, Voici la description rapide d'un petit d
19-03-2026 17:50
Enrique Rubio
Hi to everybodyThese thiny, blackish pseudothecia
I took a sample of wood from a rotten stump with Scutellina on and came across these Perithicia. The were black c0.6mm x 0.4 mm. The spores were initially cylindrical 50µ long excluding the a small appendage at each end . Maturing with one swollen (septate?) cell. The asci have a small droplet at the apex.I have included a photo of what might be hairs but not sure.
Is this Immersiella caudata.
Thanks
Mal
We do not distinguish well the hairs, are they grouped, only at the top or distributed; are they pointed or obtuse? Can you measure the appendages at the ends of the spores and the dark cell above the septum. Also it can be useful to make a cut to observe the wall.
Michel.
The dark "hairs" appear to be just at the top of the Perithicia and are very short thick walled and obtuse. The immature spores are c 50µ long with the small appendage of 5µ at each end. I have struggled to find any fully mature spores (other than the ones on the Scutellinia slide which was binned) but the odd one I have found with a dark swollen end was measured at 17 x 10. I have prepared slides of a few perithecia but none so far have had mature spores but I will try overnight so gather some.
Does that help at all?
Mal
Andy
I was not sure about C.Caudata because the perithecia do not seem to be immersed and I could not really distinguish globules (smooth or more or less ornate).
Thank you.
Michel.
Merci,
Andy
Thanks again
Mal
