05-09-2021 21:40
Wilhelm Guggisberg
Spegazzinia spp. spores (Hyphomycetes) from an ind
05-09-2021 19:06
Zuzana Sochorová (Egertová)
Hello,do you agree here with Orbilia sarraziniana?
02-09-2021 23:11
Lothar Krieglsteiner
found today east of Spiegelau, on decaying logs an
02-09-2021 13:49
Edvin Johannesen
These tiny apothecia (less than 1 mm) were found i
03-09-2021 16:16
Edvin Johannesen
These peach-coloured (becoming more reddish on age
02-09-2021 22:31
Marek Capoun
Hello everybody, I need help with the determinatio
On Urtica
Enrique Rubio,
05-09-2021 20:01
These minute subsessile pale pinkish apothecia up to 400 microns in diameter grew on Urtica stems at 1750 m of altitude. The margins are denticulate by the existence of fasciculate hairs with smooth or only very slightly asperulate walls at the base of the terminal elements. These hairs, as well as the paraphyses, have well visible VBs inside the cells. Asci IKI b with croziers. Excipulum globulosa to angularis. Ascospores OCI = 0.I think in the genus Psilocistella rather than Psilachnum or Cistella, but I would like to know your opinion.
Hans-Otto Baral,
05-09-2021 20:47
Re : On Urtica
Hi Enrique
could you please send me this in higher resolution? Esp. the excipulum photos are too small. A possibility could also be a hyaline Pyrenopeziza, although I would almost exclude this.
Zotto
Enrique Rubio,
05-09-2021 20:58
Re : On Urtica
Yes. I send you them by Wetransfer.
Hans-Otto Baral,
05-09-2021 21:29
Re : On Urtica
I see better now, especially the one hair with distinct regular warts, reminiscent of a Cistella. The superficial growth would exclude a Pyrenopeziza. Almost smooth hairs could occur in Cistella I think. The guttule in the hairs seems remarkable. Anyway, a good suggestion is hard to give. C. grevillei in a wide sense? But the long hairs and the guttule are unusual.
I compared C. cf. orientalis which I know from Eryngium. Spore contents are different. The type was on indet. stem. Regrettably I do not have Raitviir 1978 (K sistematike rodu Cistella) in digital form.
Enrique Rubio,
06-09-2021 09:36
Re : On Urtica
Certainly there were few apos to make more preparations and study the hairs better. I will try to find more material.
By the way, what are the details of the Raitviir's publication on Cistella that you refer to?
Thanks a lot, Zotto
By the way, what are the details of the Raitviir's publication on Cistella that you refer to?
Thanks a lot, Zotto
Hans-Otto Baral,
06-09-2021 10:15
Re : On Urtica
It is Scripta Mycol. 8: 147-159
Enrique Rubio,
06-09-2021 10:22
Re : On Urtica
It does not appear to be easy to achieve...
Thanks!
Thanks!