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05-12-2022 10:43

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Un ami m'a envoyé ces p

29-11-2022 17:47

Jean-Claude Malaval Jean-Claude Malaval

Espèce sur Goyavier non récoltée

03-12-2022 16:11

Bernard Declercq Bernard Declercq

Hi there,Collected in Belgium on twigs of Cytisus

02-12-2022 16:49

Thorben Hülsewig

Hi there,i'm looking for following Literature:Gibe

03-12-2022 00:10

Przemyslaw Drzewiecki

Mochle, Poland - 18.10.2022; Several ascomata on

01-12-2022 12:53

Patrice TANCHAUD

Bonjour, récolte réalisée sur un pin brûlé,

01-12-2022 23:50

Przemyslaw Drzewiecki

30.11.2022; Mochle near Bydgoszcz, Poland. Old hor

01-12-2022 12:46

Lothar Krieglsteiner Lothar Krieglsteiner

found on 8.7.2022, on the margin of National Park

01-12-2022 14:13

Lothar Krieglsteiner Lothar Krieglsteiner

... on decorticated wood of Picea, near Snasa, Ber

01-12-2022 11:49

Lothar Krieglsteiner Lothar Krieglsteiner

when finding this on 8.7.2022 in the margin of Nat

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Yellow inoperculate on Frullania dilatata
Edvin Johannesen, 12-05-2022 17:27
Edvin JohannesenApothecia 0.2-0.5 mm in diam., slightly downy excipular surface. Asci ca. 45-60 x 6-7 microns, ascus tip IKI+ (blue) in Lugol, often curved, 8-spored and bi-seriate (as far as I can see- not many ripe asci). Released spores ellipsoid with somewhat pointed apices, multiguttulate (in KOH), aseptate, hyaline, ca 11-14 x 3 microns (all measures in KOH). Paraphyses numerous, filiform, 1-1.5 microns broad.

I have sacrificed only one medium-sized apothecium, so no in-depth study. My impression is that there are not so many yellow inoperculates on Frullania.  Suggestions appreciated.

Thanks.
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Hans-Otto Baral, 12-05-2022 18:08
Hans-Otto Baral
Re : Yellow inoperculate on Frullania dilatata
As the spores are multiguttulate, Bryoscyphus turbinatus is excluded. So far I have no other idea. A pity that the elements are not alive, e.g. the paraphyses.
Lothar Krieglsteiner, 12-05-2022 19:07
Lothar Krieglsteiner
Re : Yellow inoperculate on Frullania dilatata
unfortunately one cannot see much on the micro-pictures. But macroscopically it reminds me a bit of "Luteodiscus" or however these fungi will be called. The spores are perhaps too large for this, but as I said before: one cannot see much ...
Yours, Lothar
Hans-Otto Baral, 12-05-2022 20:38
Hans-Otto Baral
Re : Yellow inoperculate on Frullania dilatata
Good idea, Lothar! That should not be too difficult to check. A minute drop of 0.5-5% KOH on an apo should produce a pink colour when it is Luteodiscus.
Edvin Johannesen, 12-05-2022 22:57
Edvin Johannesen
Re : Yellow inoperculate on Frullania dilatata
Thanks, guys. I have sacrificed one more and I think it is fair to say that it turned pink with a drop of KOH.
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Edvin Johannesen, 12-05-2022 23:03
Edvin Johannesen
Re : Yellow inoperculate on Frullania dilatata
I tried to take better photos of spores (in asci). Hope it helps a bit. This is the KOH treated apo microscoped in a drop of water after rinsing. Scale in these photos are 2.5 microns between lines. It fits quite well what you have called Luteodiscus pleurozii. It seems this is still a provisional name.
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Lothar Krieglsteiner, 13-05-2022 09:09
Lothar Krieglsteiner
Re : Yellow inoperculate on Frullania dilatata
yes, Luteodiscus as well is a provisional name, too.
Hans-Otto Baral, 13-05-2022 12:16
Hans-Otto Baral
Re : Yellow inoperculate on Frullania dilatata
Hi Edvin

what did you do with your dirty microscope? Splendid photos! I can only agree with Luteodiscus bryophilus, as we cal it at the moment. My folders represent totally only 2 species so far, one with IKI blue and one with IKI red asci.

Now I would be glad if you send me collection data. We have numerous collections in the list and map but yours would add to the puzzle.

Zotto
Edvin Johannesen, 13-05-2022 12:42
Edvin Johannesen
Re : Yellow inoperculate on Frullania dilatata
Ha ha! You are right that the microscope may need a cleanup, but I guess the improvement is largely bacause I had some more time :-)

I will send you the collection data per email.

Thanks again to both of you.