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28-11-2023 23:10

Scutellinia peloponnesiaca?
Villalonga Paco

On basic soil in humid bank, Teruel, Spain, around

30-11-2023 14:33

Mycologia Helvetica
Béatrice Senn-Irlet

alll issues of Mycologia Helvetica (1983-2000) are

25-11-2023 14:49

Ijuhya spec. on leaf of Vaccinium vitis-idaea
Kees van Oorde Kees van Oorde

Very small fruiting bodies on affected leaves. Fou

28-01-2014 10:50

Hypoxylon literature
Gernot Friebes

Hi,I'm looking for these three standard references

25-11-2023 18:14

indet. Rhytismatales on oak leaf - North Carolina, USA
Danny Newman Danny Newman

higher resolution images available at inaturalist.

24-11-2023 19:48

Sterile Geoglossum or only juvenile ?
Rajamaki Martti

Hi!I watched today Geoglossum species in Botanical

26-11-2023 12:25

About paraphyses of Geoglossum fallax
Rajamaki Martti

Hi!I found from my old collection of Geoglossum fa

25-11-2023 15:37

Pyronemataceae but which Genus?
Pauline. Penna

These 3mm yellow turbinate discs were found on top

12-10-2018 05:29

cf. Lambertella from Puerto Rico
Danny Newman Danny Newman

Substrate/Host: on hollow, herbaceous twig in a ro

24-11-2023 21:38

Pezicula sp. on Pyrularia pubera - North Carolina, USA
Danny Newman Danny Newman

higher resolution images available at inaturalist.

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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.