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29-09-2022 20:26

Geoglossum
Elisabeth Stöckli

Bonsoir, Trouvé à 2'500 m (prairie alpine), tai

05-10-2022 14:35

Hypoxylon aff submonticulosum
Viktorie Halasu Viktorie Halasu

Hello,I've found here a Hypoxylon (or Hypomontagne

04-10-2022 18:38

Brown Lachnaceae on Chamaenerion
Juuso Äikäs

These little brown, hairy apos were growing on a d

01-10-2022 11:54

Bryoglossum rehmii/gracilis
DirkW DirkW

chers collègues, anyone out there who could send

05-10-2022 16:09

Podostroma Nouvelle Calédonie
JEAN CABALION

Bonjour, Qui peut me renseigner sur ce Podostroma

24-10-2021 21:50

asco on Andreaea rupestris
Robin Isaksson Robin Isaksson

Hi,Found on Andreaea rupestris sweden.ascomata bl

29-09-2022 17:25

Hymenoscyphus on Betula leaf
Juuso Äikäs

A finding from a couple days ago: a few white Hyme

29-09-2022 13:34

Tiny on Typha
Marja Pennanen

Dear colleagues, a couple of days ago I found the

13-12-2014 21:47

Disco negruzco
Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas imágenes de un disco neg

26-09-2022 15:31

Hypoderma rubi
Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,please, can this be something else than Hypo

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Ciboria-like apothecium on deciduous stick
Stefan Jakobsson, 11-08-2022 00:45
On a thin deciduous stick (Salix/Alnus/Betula) on moist sand I found a light brownish grey apothecium 4 mm diam. The excipulum is t. globulosa and the medulla t. intricata. The spores are (15.2)15.7-18.0(19.6) × (4.5)4.7-5.4(5.7) µm with many medium sized guttules. The asci are 128-152 × 7.1-11.9 µm and the praphyses are filled with low refractive guttules.

I have difficulties finding even a genus; it has much in common with Ciboria but I don't think the spores fit in.


I would appreciate opinions on this one.


Stefan

  • message #73663
  • message #73663
  • message #73663
  • message #73663
Hans-Otto Baral, 11-08-2022 07:50
Hans-Otto Baral
Re : Ciboria-like apothecium on decoduous stick
Yes, clearly sclerotiniaceous. Although very well documented, I have no clear idea. Spore guttulation together with globulosa could point to Rutstroemia bolaris, but that is only known from Carpinus and its spores are much larger and the VBs in the paraphyses brownish and elongated.  Perhaps you can clarify the substrate? Alnus and Betula have very characteristic perforations of the vessels (in radial section).
Stefan Jakobsson, 11-08-2022 23:41
Re : Ciboria-like apothecium on deciduous stick
Thank you! I think Salix can be excluded.
  • message #73673
Hans-Otto Baral, 12-08-2022 09:10
Hans-Otto Baral
Re : Ciboria-like apothecium on deciduous stick
Yes! And Betula vs. Alnus is difficult. Perhaps it works with a cross section but I was repeatedly in doubt.