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19-02-2026 17:49

Ayuda con Tarzetta sp
Salvador Emilio Jose

Hola buenas tardes!! Necesito ayuda para la ident

28-02-2026 11:05

Peziza
Yanick BOULANGER

Bonjour à tousLe 24/02/2026 à Montmacq, devant m

03-03-2026 20:34

Cercophora-Podospora-Arnium 210226 333 on cow dung
Miguel Ãngel Ribes Miguel Ángel Ribes

Good eveningThese small, amphora-shaped perithecia

28-02-2026 11:54

Sinensia
Alain GARDIENNET Alain GARDIENNET

Hi forum,Is anyone aware if the 1936 edition of Si

02-03-2026 22:07

Geopyxis majalis ?
Jorge Hernanz

Buenas noches!Entre musgos, bajo Pinus halepensis

01-03-2026 18:02

unidentified Helotiales on a leaf
Francois Guay Francois Guay

I found this mystery Helotiales on an incubated le

28-02-2026 14:43

Georgian litterature
Alain GARDIENNET Alain GARDIENNET

A new refrence desired :Svanidze, T.V. (1984) Novy

01-03-2026 18:46

Lichenicolous myxomycete on Lopadium
Robin Isaksson Robin Isaksson

Hi! This species i se from time to time in the

26-02-2026 22:06

Geoscypha
Malcolm Greaves Malcolm Greaves

Can someone explain the features that split Geoscy

27-02-2026 17:51

Parasite de Evernia prunastri
Michel Hairaud Michel Hairaud

Bonjour, Quelqu'un peut il me donner un conseil p

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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

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  • message #73663
  • message #73663
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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.
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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.