16-07-2024 18:32
Andgelo Mombert
Bonsoir, Un discomycète sur Liochlaena lanceolat
11-01-2022 16:36
Jason Karakehian
Hi does anyone have a digital copy of Raitviir A (
24-08-2020 13:00
Yulia Lytvynenko
Dear friends.Looking for a copy of the following w
11-07-2024 14:29
Viktorie Halasu
Hello, a thin-fleshed Mollisia on a monocot stem
14-07-2024 18:23
Joaquin MartinHi,I found this Ascomycete on horse dung.The spora
13-07-2024 19:50
Zuzana Sochorová (Egertová)
Hello,I have identified this fungus as Hamatocanth
08-07-2024 23:34
Villalonga PacoSmall Scutellinia growing in garden soil (calcareo
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Stefan JakobssonOn a wet lake shore I found a single minute apothe
Sur mousse
Louis DENY,
24-02-2024 15:15
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
Zuzana Sochorová (Egertová),
24-02-2024 16:27
Re : Sur mousse
Hello Louis,
this could be what is called Luteodiscus bryophilus. It appears now and then on this forum.
Zuzana
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
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
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
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
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
Hans-Otto Baral,
26-02-2024 18:01
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.
Hans-Otto Baral,
27-02-2024 16:46
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
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
All the best,
George
Hans-Otto Baral,
07-03-2024 10:29
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.