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Mot de passe perdu?

16-02-2026 21:25

Pyreno in the bark of Lonicera xylosteum

Andreas Millinger

Andreas Millinger

Good evening,failed to find an idea for this fungu

17-02-2026 09:41

Diaporthe spiculosa?

Maren Kamke

Maren Kamke

Good morning, I found a Diaporthe species on Samb

08-12-2025 17:37

Cucurbidothis parmeliarum (pithyophila var. cembrae) - on Abies

Lothar Krieglsteiner

Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

17-02-2026 17:26

Recherche biblio Lambertella WHETZEL 1943

Nicolas Suberbielle

Nicolas Suberbielle

Bonjour à tous, Je recherche cette publication :

03-02-2013 19:50

Helotium schimperi

Nina Filippova

Good time), I've compared this specimen with the

15-02-2026 04:32

Lentomitella like, aseptate?

Tomaz Vucko

Tomaz Vucko

One more specimen that is giving me some descent a

17-02-2026 13:41

recherche de publi

Isabelle Charissou

Bonjour, est-ce que quelqu'un pourrait me fournir

16-02-2026 18:34

Exosporium tiliae

Thierry Blondelle

Thierry Blondelle

Bonjour,La micro de cet anamorphe de Hercospora su

16-02-2026 17:14

Cucurbidothis specimens?

Joanne Taylor

Last week we published the following paper where w

16-02-2026 16:53

recherche de publi

Isabelle Charissou

Bonjour, quelqu'un pourrait-il me transmettre un

Minute apos on bark of oak

Stefan Jakobsson, 03-03-2023 20:13

On a branch of Quercus on the underside of loose bark and in bark cracks there were some minute apothecia, turbinate, 0,13-0,22 mm in diameter. The asci are 51-67 × 8.5-11.3 µm, IKI negative. The spores are 10.1-13.0 × 3.2-3.5, occasionally septate. Paraphyses cylindrical, 1-2 µm, thin-walled, septate, branched. Excipular hairs cylindrical, 1 µm thick, thin-walled, slightly amyloid in Melzer and a few marginal hairs seem to have some lumps turning black.

I would be grateful for suggestions on this one. Thanks!

Kosonen Timo, 03-03-2023 21:37

Kosonen Timo

Re : Minute apos on bark of oak

Hi,

Are they hairs for sure? I suppose they are then. Hyaloscypha daedalea would be my starting point. But the spores are rather large here. And H. quercicola has MLZ- asci. WOuld that be an option?

I dont know. If I get it right the dextrinoid part in the hairs is quite long. Howabout Hyaloscypha intacta? The hair layout would fit. H. intacta is often very anonymous macroscopically.

Timo

Stefan Jakobsson, 03-03-2023 21:57

Re : Minute apos on bark of oak

I got a better view of the hairs in CR - the shape could fit e.g. intacta. Actiually I found what I take to be H. intacta on the same branch but that is macroscopically very different, sessile and much more dextrinoid:

http://tun.fi/JX.1534214#3

Kosonen Timo, 03-03-2023 22:08

Kosonen Timo

Re : Minute apos on bark of oak

kind of large hairs for intacta. Are the asci simple septate? ...Then we have H. spiralis, simple septa, hairs and spores would fit. Excpular cells dextrinoid by any chance?

Stefan Jakobsson, 03-03-2023 22:20

Re : Minute apos on bark of oak

Just slightly dextrinoid. I have difficulties making up my mind on croziers.

Stefan Jakobsson, 03-03-2023 23:21

Re : Minute apos on bark of oak

No bluing whatsoever of the ascal plug even after KOH pretreatment. That leaves only H. intacta then, I presume.

H. intacta seems to be very common during the winter months, but I have never seen it like this. All intactas I have seen have been on branches recently fallen from the canopies - like this one. This fungus had a very light brownish or beige colour which I have never noticed before. My intactas have always been whitish or greyish hyaline. Likewise, the substipitate apos are new - I have always seen only sessile apos of intacta. Seppo says "...narrowly to broadly sessile".

Danke schön!

Kosonen Timo, 04-03-2023 08:53

Kosonen Timo

Re : Minute apos on bark of oak

I think there's always room for doubt with Hyaloscyphas. I am getting confused with intactas often. There's usually atleast one sample per year labeled "small hyaloscyphoid, no hairs" or something like that, only turning out to be a H. intacta once sequenced. Then, going back to scope, there's the single hair somewhere with dextrinoid apex. Usually dextrinoid reaction (excipulum) is more or less clear. Maybe that's the questionmark here?

Timo