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28-03-2026 07:55

White Orbilia with allantoid spores
Marc Detollenaere Marc Detollenaere

Hello everybody,Yesterday I found a number of whit

26-03-2026 15:31

Hymenoscyphus ombrophiliformis?
Ã…ke Widgren Ã…ke Widgren

Hello,I found this one in October last year, on r

27-03-2026 15:23

Trichopezizella barbata?
Gernot Friebes

Hi,this Trichopezizella deviates from typical T. b

25-03-2026 10:35

Encoelia impudicella?
Hulda Caroline Holte

Hello,I collected this species growing on a dead b

27-03-2026 15:08

Coelomycete on Cirsium
Gernot Friebes

Hi,I'm looking for help with this coelomycete on C

27-03-2026 10:47

Stictis cf. friabilis and literature request
Ã…ge Oterhals

I have tentatively identified this Stictis to S. f

24-03-2026 21:37

Helminthosphaeria
Elisabeth Stöckli

Bonsoir,Sur bois (tronc) très pourri de conifère

26-03-2026 12:50

Pseudombrophila
David Chapados David Chapados

Hi,I'm having a hard time figuring which Pseudombr

26-03-2026 11:17

asco in Ulmus
Vasileios Kaounas Vasileios Kaounas

Found 11-03-26, in leaf of Ulmus sp. Diameter 2-4

25-03-2026 22:23

Orbilia with resin deposits
Marc Detollenaere Marc Detollenaere

Dear Forum,On a debarked stem of Tilia, we found s

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Orbilia subalpine
Andgelo Mombert, 16-08-2021 18:08
Andgelo Mombert
Bonsoir,

Sur branche morte décortiquée de Rhamnus pumila, le 03/08/2021, en zone subalpine, vers 2300 m d'altitude (col de la colombière, St-Dalmas-le-Selvage).

Ascospores : 11,5-14,5 x 3-4,2

Asques : 60-75 x 4-8 µm, contenant huit spores.

Paraphyses à sommet renflé, large de 4-5,5 µm.

Les spores rappellent un peu O. quaestiformis mais le corps sporal est très différent.

Merci d'avance pour votre aide !

Andgelo
  • message #69788
  • message #69788
  • message #69788
  • message #69788
Hans-Otto Baral, 17-08-2021 13:04
Hans-Otto Baral
Re : Orbilia subalpine
Hi Andgelo

interesting collection! We tried to identify it but there is no clear solution. It is a member of section Habrostictis without doubt. Very similar is Orbilia mesaverdiana regarding spore size and shape, SBs, and crystalloid SCBs. The paraphyses in your fungus are not so swollen above and tend to be a bit mammiform or moniliform. How large are the apos? In O. mesaverdiana they are 0.2-0.5 mm diam.

Of course it would be a surprize to find this species, which is known from semiarid mountainous regions of N-America, in a humid alpine environment of Europe.

Zotto
Andgelo Mombert, 17-08-2021 15:28
Andgelo Mombert
Re : Orbilia subalpine
Merci beaucoup Zotto pour ta réponse. 
Les apothécies réhydratées atteignent 0,6 mm de diamètre.
Malheureusement il n'y a que 3 apothécies, j'essaierai peut-être de faire séquencer...

Andgelo