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05-04-2024 15:26

Pierre-Yves Julien

Bonjour à tous,Récolte le 31/03/2024 – Somme (

07-04-2024 20:49

B Shelbourne B Shelbourne

Another species that appears easy to identify from

12-04-2024 12:22

B Shelbourne B Shelbourne

Orbilia xanthostigma, sensu Baral (2020). • Hab

09-05-2010 20:06

Marja Pennanen

I found these on Epilobium. They are about 0,1-0,

11-04-2024 08:53

Viktorie Halasu Viktorie Halasu

Hello, does anyone know a collection of Dendrosto

05-09-2019 11:03

Simon Kennedy

I would be grateful, if anyone could let me have a

11-04-2024 16:30

Laurent LENEL Laurent LENEL

Bonjour à tous, j'ai récolté quelques morilles

09-04-2024 15:29

ruiz Jose antonio

Hola a todos,recolectada en zona de ribera, con hi

09-04-2024 21:40

Simon Gurtner Simon Gurtner

Good evening found on 25.03.2024 in Bern, Switzer

09-04-2024 13:13

Castillo Joseba Castillo Joseba

Me mandan elmaterial seco de Galicia (Espsaña), r

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Sur mousse
Louis DENY, 24-02-2024 15:15
Bonjout Forum
Trouvé à Belfort (400m altitude), sur mousse ayant envahi une branche dégradée de pinus sylvestris
cz petit asco jaune, à pied court, blanchatre. Diamétre jusqu'à 0,7mm.
Asques sans crochet, 60-85 X 10, J+ BB, spores biseriées
Spores 11-13 X 4-5, guttulées, extrémités arrondies, Structure prismatique

Peut-il s'agir d'un Bryoscyphus?
D'autre part, pouvez vous m'identifier la mousse sur laquelle il pousse?

Un grans merci pour votre aide
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Zuzana Sochorová (Egertová), 24-02-2024 16:27
Zuzana Sochorová (Egertová)
Re : Sur mousse
Hello Louis,
this could be what is called Luteodiscus bryophilus. It appears now and then on this forum.
Zuzana
Louis DENY, 24-02-2024 17:08
Re : Sur mousse
Thanks a lot for your answer Zuzana. I made the test with KOH, and it works! The colour of the apo turned to pink.
Hans-Otto Baral, 24-02-2024 17:19
Hans-Otto Baral
Re : Sur mousse
Ha! I agree, and the mousse could be Dicranum or Dicranella.



Is the area acidic? Was the moss on soil or rock?

I would be pleased to get coordinates and other data, then we can include your find in the quite finished paper.

So far it is a new genus and species, but I will order a Höhnel specimen to clarify if it is conspecific or not.

Zotto


Louis DENY, 24-02-2024 17:44
Re : Sur mousse
Thanks for the confirmation Zotto.

GPS data are: 47 703 and 6 857

Soil is acid. Found yesterday on a very deteriorated branch of Pinus sylvestris lying on the ground and covered by different mosses
Hans-Otto Baral, 25-02-2024 10:54
Hans-Otto Baral
Re : Sur mousse
Thanks Louis! You mean 47.703 6.857, which leads me to 425 m altitude east of Etang Neuf 7 km N of Belfort.

I do not much like these exact-looking piximeter measurements. When I try to apply a scale to your spore photo I arrive at 12.2-14 (or even 15?) x 3.3-3.8 when taking the 13.5 µm spore as 14 long. 5 µm width must be an error.

Lacking croziers is surely wrong (I strongly presume, though I do not see it).

For the moss we must leave it as ?Dicranum?
Louis DENY, 25-02-2024 16:41
Re : Sur mousse
Zotto
1) localisation 7km north of Belfort is correct
2) Spores: my figure for width is obviously wrong. Correct value is more between 3.2 end 3.8. On the other hand I found longer spores up to 16/17. Also some old spores are with septa.
3) I add some pictures in water and congo red which confirm the presence of croziers
4) I don't know moss, so I can't confirm. Dicranelle seems a good hoice when I compare with pictues on internet
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Hans-Otto Baral, 26-02-2024 18:01
Hans-Otto Baral
Re : Sur mousse
I agree with croziers. Good that you corrected the spore size.

Your scale I know, it is the same as Lothar used, and one must know that the inner border of the scale is 10 µm.
Louis DENY, 27-02-2024 11:14
Re : Sur mousse
I returned to the place and found a lot of them, on mosses growing on living trunks (Pinus sylvestris), up to 1,50m from soil. I also noticed that the moos dies when attacked, turnong brown.
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Hans-Otto Baral, 27-02-2024 16:46
Hans-Otto Baral
Re : Sur mousse
Yes, it is typical that the fungus kills the moss. This one could be Hypnum. I never found the genus in my area here.
Georges Greiff, 03-03-2024 19:29
Re : Sur mousse
Interesting there are two hosts, initially Dicranella heteromalla but in the later sighting it is on Hypnum cupressiforme. A natural infection experiment.
Hans-Otto Baral, 03-03-2024 20:51
Hans-Otto Baral
Re : Sur mousse
Georges, are you sure with D. heteromalla? I have difficulties to distinguish from Dicranum.
Georges Greiff, 03-03-2024 21:12
Re : Sur mousse
Dear Zotto. No, I am not sure. The plants are usually quite easy to tell apart in the field due to size and colour, but from photos it can be tricky without microscopy. The plant is too dead for me to be sure from this. Perhaps there are some other photos like 1 and 2 from Louis? In any event, moss is family Dicranaceae if a genus cannot be assigned.
All the best,
George
Hans-Otto Baral, 07-03-2024 10:29
Hans-Otto Baral
Re : Sur mousse
Sorry, I overlooked your reply. I was astonished to read that Dicranella is placed in a family of its own, Dicranellaceae, see Hodgetts et al. 2020, European checklist of bryophytes. When I looked up Dicranum and Dicranella in http://www.bildatlas-moose.de/index.htm, I did not see clear size differences.