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26-04-2025 07:15

Paranectria?
Dragiša Savic

Hello everyone,the lichen is Candelariella aurella

25-04-2025 22:48

Hilberina from Japan
Gustaf Fredell Gustaf Fredell

Hello,I hope everything is going well. I couple mo

18-04-2025 23:16

Mollisia
Robin Pétermann Robin Pétermann

Bonjour, Voici une probable Mollisia, genre que j

24-04-2025 21:35

Asco on Salix leaf
Thorben Hülsewig

Hi there,last week i could found this asco on an S

25-04-2025 17:24

Cosmospora/Dialonectria spec.
Stefan Blaser

Hi everybody, This collection was collected by J

25-04-2025 09:33

Help with a Pyrenomycete.
Josep Torres Josep Torres

Ascomata shaped like deformed black grains, measur

24-04-2025 21:53

ascoconidia in Cudonia circinans (?) from France
Lothar Krieglsteiner Lothar Krieglsteiner

... 15.7.24 in the Alps. There were many asci with

23-04-2025 20:16

Sarcosagium campestre 281123 143
Miguel Ãngel Ribes Miguel Ángel Ribes

Good afternoon Looking for Octospores / Lamprospo

24-04-2025 15:03

Lasiobolus macrotrichus?
Henri Koskinen

Hello, I collected this Lasiobolus 22.04. near Hel

23-04-2025 19:58

Orbilia sp. similar to O. pseudoaristata?
Francois Guay Francois Guay

I found this interesting Orbilia sp. one year ago

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Calycina claroflava?
Di Napier, 25-09-2023 11:04
Found on a rotting log in Warwickshire, UK.  I think these might well be Calycina claroflava: the septate spores are the right size c 7.5-9 x c 2-2.5um, and they are septate in the asci, so it isn't Calycina citrina.  However, the ascus length is quite a bit shorter (70-80 um) for the figure quoted for Calycina claroflava in Fungi of Temperate Europe (120-140).  The asci are perhaps slightly I+ or maybe I-.  I don't have any other literature with ascus size for this species. This is the second time I have collected a sample locally with the same spore and ascus features, so it would be good to have a name for recording. Thank you
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Hans-Otto Baral, 25-09-2023 11:15
Hans-Otto Baral
Re : Calycina claroflava?
The uploaded images are much too small to see or read something. Since you mounted in lethal media you cannot be sure with spore septation inside the asci, this needs to be checked in living asci. Negative IKI reaction and absence of croziers are essential, and living spores and their contents would be welcome.
Di Napier, 25-09-2023 11:40
Re : Calycina claroflava?
Thank you for the very helpful reply.  The photos were reduced as I didn't think full size ones could be uploaded (which is why I quoted the spore and asci measurements in the text), but maybe I over-reduced them.  I will try again with mounting in water.  I had not appreciated from FOTE that they needed to be live spores.  Is the iodine reaction with K as well as iodine? (I have had trouble with lichen identification where I using K as well as I when it was supposed to just be I, so I'm not too sure about how this one should be done.  Many thanks again.
Hans-Otto Baral, 25-09-2023 11:54
Hans-Otto Baral
Re : Calycina claroflava?
In lichens as in non-lichens you may always use Lugol without KOH. If Lugol (IKI) is negative you can be sure that K+IKI is also negative.

Ascofrance reduces the images automatically when they are too large.