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08-10-2024 16:51

Peziza badiofusca/badiofuscoïdes?
Margot en Geert Vullings

These small cup fungi were found on 26 September 2

10-10-2024 13:31

Danish unitunicate pyreno with long pointy setae and hyaline spores
Thomas Læssøe

Asci loosening with long tails; spores biseriate,

09-10-2024 05:05

Hymenoscyphus sp. on twigs, leaves and petioles
Ethan Crenson

Hello all, I found this tiny pale yellow Hymenosc

09-10-2024 05:41

Brunnipila fuscescens and long spore Brunnipila?
YI-SIOU CHEN YI-SIOU CHEN

Hello, I found two species of Brunnipila in Taiwa

08-10-2024 13:44

Hymenocyphus or Rutstroemia
Pavel Jiracek

I think this is R.bolaris. How can I verify that a

07-10-2024 05:02

512 (or more) -spored "Podospora"
Francisco Calaça Francisco Calaça

Hi there! A long time I dont figure here! How are

08-10-2024 19:45

Cheilymenia vitellina?
Margot en Geert Vullings

These bright yellow small discs found on 29 Sep 20

08-10-2024 13:20

Orbilia cotoneastri?
Harald Homa Harald Homa

Hello everyone! Once again I came across an Orbil

03-10-2024 20:56

Orange disc, Melastiza flavorubens
Margot en Geert Vullings

These orange discs were found in September on mois

05-10-2024 15:55

Humaria hemisphaerica
B Shelbourne B Shelbourne

• Macro and habitat suggest Humaria hemisphaeric

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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.