29-12-2025 09:38
Oskari VirtanenHi,could anyone help me identify this, I suspect P
29-12-2025 08:30
Josep Torres
Hello.A tiny ascomycete sprouting under Juniperus
28-12-2025 12:08
Margot en Geert VullingsThis possible Karstenia was found on the bark of d
21-12-2025 21:32
Pol DebaenstHello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1
26-12-2025 21:19
Arnold BüschlenPithyella chalaudii Priou. Ist als Bryoparasit in
21-12-2025 09:32
Josep Torres
Hello.A tiny ascomycete found embedded in wood in
18-12-2025 21:17
Pol DebaenstThe identification took me to Byssonectria deformi
24-12-2025 17:08
Hulda Caroline HolteHello, I have found this propoloid ascomycete on
Laetinaevia-like?
Chris Yeates,
26-10-2017 21:47
This was found growing quite abundantly on a decorticated area on a thin (6mm diameter) Fraxinus twig. Pale peach-coloured when fresh, and small (max. 170µm diameter).Excipulum composed of rather thick-walled cells.
Asci 8-spored; in IKI apparently no reaction - possibly very faint hemiamyloid, though this might be an artefact; strongly blue in KOH > MLZ). Difficult to see but probably croziers +. Paraphyses not swollen at apex, without guttules.
Ascospores ellipsoid to (mostly) broadly reniform / bean-shaped; guttules as in the images.
Any thoughts would be welcome.
Chris
Hans-Otto Baral,
26-10-2017 22:02
Re : Laetinaevia-like?
Hi Chris
with such a strong amyloid reaction the unpretreated asci should distinctly react red! Maybe your Lugol lacks iodine?
No idea what it is. A closeup of the apical ring could be valuable
with such a strong amyloid reaction the unpretreated asci should distinctly react red! Maybe your Lugol lacks iodine?
No idea what it is. A closeup of the apical ring could be valuable
Chris Yeates,
26-10-2017 22:27
Re : Laetinaevia-like?
Thanks Zotto
yes I'll have another go tomorrow, mounting in pure IKI, rather than running it into a water mount as I did in this instance (although that has usually worked well for me with many other species).
LG
Chris
yes I'll have another go tomorrow, mounting in pure IKI, rather than running it into a water mount as I did in this instance (although that has usually worked well for me with many other species).
LG
Chris
Hans-Otto Baral,
26-10-2017 22:38
Re : Laetinaevia-like?
It is the better method to add IKI to water (not too much water) because only then you can view the change from blue to red in some taxa. But it must be concentrated enough.