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27-01-2009 23:25

Eutypella / Calosphaeria ?
Yannick Mourgues Yannick Mourgues

Bonsoir. Comme Alain à une certaine époque, m

27-01-2009 13:10

nectriacées (suite)
Alain BRISSARD

2 autres clichés; la est de qualité médiocre du

27-01-2009 13:07

Nectriacées
Alain BRISSARD

Bonjour à tous Peut-être banal pour vous mais j

26-01-2009 19:32

cheilymenia cf pulcherima ?
VASILEIOS KAOUNAS

On cow dung. (1) Apothecia: diam.: 1-2 mm. Hymen

25-01-2009 08:26

Red Coniochaeta
Christian Lechat Christian Lechat

Dear friends, I would like to know if somebody ha

24-01-2009 16:40

Pseudoplectania
Renée Lebeuf

Bonjour à tous, Je sollicite votre aide pour

23-01-2009 09:08

Genea verrucosa?
VASILEIOS KAOUNAS

spores 29,0-33,0*23,6-25,4 , Q=1,2-1,4

22-01-2009 07:17

Phaeosphaeria cf. berlesei, in english
Alain GARDIENNET Alain GARDIENNET

I'm looking for someone who works on the genus Pha

21-01-2009 21:43

Phaeosphaeria cf. berlesei
Alain GARDIENNET Alain GARDIENNET

Bonsoir, Je viens de faire une récolte singuliÃ

21-01-2009 21:25

Nectria sur Hypoxylon
Jean Pierre Dechaume Jean Pierre Dechaume

Trouvé sur branche de noyer, en groupes, soit ser

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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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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.