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05-07-2020 10:31

Castillo Joseba Castillo Joseba

me mandan el material de Galicia, recolectado en h

03-07-2020 17:47

Thomas Læssøe


27-06-2020 13:21

Hardware Tony Hardware Tony

I wondered if anyone could help me with this ascom

04-07-2020 14:34

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, I would like to ask you for help with idet

03-07-2020 21:06

Castillo Joseba Castillo Joseba

me mandan el material seco,, recolectado en plante

03-07-2020 20:54

Castillo Joseba Castillo Joseba

me mandan el material seco recolectado en rama de

03-07-2020 22:51

Viktorie Halasu Viktorie Halasu

Hello,I'd like to ask for help with a lichen. In w

02-07-2020 21:45

Castillo Joseba Castillo Joseba

me mandan el material seco, recolectado en  tallo

02-07-2020 07:56

Garcia Susana

Hola, Agradecería vuestra ayuda para la identifi

02-07-2020 13:33

Garcia Susana

Hola, He recogido estos apotecios que crecían en

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Enrique Rubio, 03-05-2019 21:38
Enrique RubioThese 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
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Hans-Otto Baral, 03-05-2019 21:56
Hans-Otto Baral
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.

Jason Karakehian, 03-05-2019 22:11
Jason Karakehian
Re : Karstenia?
Hi Enrique, do you observe longitudinal wrinkles on the ascospores at all?
Enrique Rubio, 04-05-2019 01:18
Enrique Rubio
Re : Karstenia?
No, Jason. I haven't observed any ornamentation on the spores.
Enrique Rubio, 04-05-2019 01:46
Enrique Rubio
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.
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Hans-Otto Baral, 04-05-2019 08:37
Hans-Otto Baral
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.