23-04-2024 21:49
Ethan CrensonHello all, A friend recently found this orange as
23-04-2024 15:18
Lothar Krieglsteiner... but likely a basidiomycete. I hope it is o.k.
22-04-2024 11:52
Zuzana Sochorová (Egertová)Hello,I made a loan of a collection of Microstoma
23-04-2024 13:17
Edouard EvangelistiBonjour à tous, Je viens de récolter ce que je
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
20-04-2024 16:02
Michel HairaudBonjour,On me fait part, pour diffusion d une list
Karstenia?
Enrique Rubio,
03-05-2019 21:38
What do you think?
This collection is from central Spain at 1000 m of altitude, april 6(2019).
Many thanks again
Hans-Otto Baral,
03-05-2019 21:56
Re : Karstenia?
Hi Enrique
With Karstenia I agree. It could be valuable to make a KOH-pretreatment and test in IKI or MLZ (both the same), you will get a blue hymenium (hemiamyloid, not dextrinoid!) and perhaps a small blue apical ring becomes visible under oil immersion, depending on the species. Dextrinoid would mean red in MLZ whereas your pic clearly shows no reaction in MLZ.
Zotto
With Karstenia I agree. It could be valuable to make a KOH-pretreatment and test in IKI or MLZ (both the same), you will get a blue hymenium (hemiamyloid, not dextrinoid!) and perhaps a small blue apical ring becomes visible under oil immersion, depending on the species. Dextrinoid would mean red in MLZ whereas your pic clearly shows no reaction in MLZ.
Zotto
Jason Karakehian,
03-05-2019 22:11
Re : Karstenia?
Hi Enrique, do you observe longitudinal wrinkles on the ascospores at all?
Enrique Rubio,
04-05-2019 01:18
Re : Karstenia?
No, Jason. I haven't observed any ornamentation on the spores.
Enrique Rubio,
04-05-2019 01:46
Hans-Otto Baral,
04-05-2019 08:37
Re : Karstenia?
Sorry, but your KOH pretreatment must have been very weak. I cannot imagine that an ostropalen fungus does not turn to an I-blue reaction even if exposed to 1-2% KOH for a few seconds only.