21-12-2024 09:08
Castillo Joseba
Me mandan el material seco de Galicia, recolecta
21-12-2024 12:45
Marc Detollenaere
Dear Forum,On naked wood of Fagus, I found some ha
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Lothar Krieglsteiner
this fluffy anamorph was repeatedly found on decid
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Bernard CLESSE
Bonsoir à toutes et tous,Pourriez-vous m'aider à
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Francois Guay
Hi, I found this species on incubated Fir needles
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Enrique Rubio
Perhaps some of you can help me identify this smal
20-12-2024 17:32
Louis DENYBonsoir forumTrouvé à Belfort, 400 m altitude, s
Karstenia?
Enrique Rubio,
03-05-2019 21:38
These apothecia grew in a decorticated branch of hardwood of 10 mm thick, fallen to the ground, product of a pruning.The hymenium is dextrinoid and the ascospores are multiseptate. I think in Karstenia as a good genus for it.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
Re : Karstenia?
From dried, not fresh material:
*Mlz. + KOH-pret. = negative
*IKI + KOH-pret. = reddish, not blue
I haven't observed any bluish apical pore.
*Mlz. + KOH-pret. = negative
*IKI + KOH-pret. = reddish, not blue
I haven't observed any bluish apical pore.
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.