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06-05-2026 11:25

En excrementos de caballo
Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia (España) re

28-04-2026 20:07

Marthamycetales? - from Portugal
Lothar Krieglsteiner Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

05-05-2026 22:40

Plagiostoma on Salix
Gernot Friebes

Hi,I believe this is a Plagiostoma growing on a Sa

04-05-2026 18:13

Black rod-like structures with branching curved conidiophores
Stephen Martin Mifsud Stephen Martin Mifsud

ID request for what seems to be a true aquatic fun

04-05-2026 16:39

Black pseudothecia on submerged foliar debris - Pleospora sp.
Stephen Martin Mifsud Stephen Martin Mifsud

ID request: This specimen was collected in Malta o

28-07-2011 18:31

Velenovsky book "Monographia Discomycetum Bohemiae"
Alex Akulov Alex Akulov

Dear FriendsToday I made the pdf file of Velenovsk

04-05-2026 09:50

Una en semilas de Acacia
Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia,(España) re

03-05-2026 11:38

En dunas
Castillo Joseba Castillo Joseba

Me mandan el material seco, recolectado en dunasLo

02-05-2026 12:42

Hilfe :pour cette éventuelle Orbiliaceae
Alain BRISSARD

Bonjour à tousJeuidi 30 avril dernier on m'a remi

02-05-2026 13:06

Small perithecia on Oenanthe crocata
Pauline. Penna

Bonjour  Please can someone help me with this id

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Ciboria (?) en xérobrometum
Bernard CLESSE, 13-12-2017 10:41
Bernard CLESSEBonjour à toutes et tous,

J'ai trouvé hier en pelouse calcicole xérique très rase (xérobrometum) ce petit asco qui me fait penser à un Ciboria.

a) diamètre apothécie : 2,5 mm
b) longueur pied : 2 mm
c) spores elliptiques-subfusiformes, à 2 guttules polaires : 18,5-21x8,5-9 µ
d) asques IKI+
e) excipulum à textura globosa, à cellules brunes, les terminales hyalines et cylindro-clavées
f) paraphyses hyalines, à peine élargies à l'apex.

Bernard
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Lothar Krieglsteiner, 13-12-2017 11:15
Lothar Krieglsteiner
Re : Ciboria (?) en xérobrometum

Hi Bernard,


I think this is Sclerotinia trifoliorum.


You have overlooked the sclerotia.


Look at your ascus-foto - you see 4 small and 4 larger spores.


The habitat is quite typical, the species is quite common in meadows, but mostly only solitary or few ascomata.


Best regards, Lothar

Bernard CLESSE, 13-12-2017 11:22
Bernard CLESSE
Re : Ciboria (?) en xérobrometum
Big thanks for your answer Lothar!

Do you know the potential hosts of this Sclerotinia because in this environment there is to my knowledge no Trifolium but many other Fabaceae (Hippocrepis, Anthyllis, Medicago…) ?

Best regards,

Bernard

Lothar Krieglsteiner, 13-12-2017 15:34
Lothar Krieglsteiner
Re : Ciboria (?) en xérobrometum

Hi Bernard,


I fear I cannot help you with this - perhaps the species is not very specialized.


Best regards from Lothar

Bernard CLESSE, 13-12-2017 15:45
Bernard CLESSE
Re : Ciboria (?) en xérobrometum
OK Lothar, thank you.

Bernard
Martin Bemmann, 13-12-2017 16:01
Martin Bemmann
Re : Ciboria (?) en xérobrometum
Dear Bernard,

check this database: https://nt.ars-grin.gov/fungaldatabases/fungushost/fungushost.cfm

there are a lot of hosts for S. trifoliorum!

Best regards
Martin
Bernard CLESSE, 13-12-2017 16:14
Bernard CLESSE
Re : Ciboria (?) en xérobrometum
Great thanks Martin !

I see that Medicago, Lotus corniculatus and Anthyllis could be hosts of Sclerotinia trifoliorum, which may be suitable.

Best regards,

Bernard